jwst-gc pipeline monitor

Stage ladder

Products per filter

* = the product name carries no _o<obs> token and this field has more than one observation, so the count cannot be attributed to 5365/o001.

Astrometry — m2 checkpoint

“tiles ok” is not a tolerance. measure_offset_grid runs with no max_off_mas, and astrometry_offsets sets off_ok=True whenever that is None — so N/N counts tiles whose offset histogram had a coherent peak, however large the offset. The column that carries the gate is worst tile, against 15 mas.

Provenance

No *.prov.json sidecars.

Queue

Findings

• fail
  F150W_o001: 49/192 exposures misaligned vs their visit consensus

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues.

  checkpoint_m2_F150W_o001_latest.json

  what is affected, and why

  Affected: 8/8 detectors — spread across detectors, so the frame as a whole moved: look at the offsets table and whether these exposures were regenerated from _cal after the table changed. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrca29/24

  nrcb29/24

  nrca38/24

  nrcb48/24

  nrca44/24

  nrcb14/24

  nrcb34/24

  nrca13/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrca1	0.4	-2.0	2.1	692.0	264095	3.0
  1	nrca1	0.4	-2.0	2.0	720.8	264783	3.0
  1	nrca1	0.5	-2.0	2.1	738.2	263972	3.0
  1	nrca2	-1.9	-0.7	2.0	443.0	760034	3.0
  1	nrca2	2.7	-1.0	2.9	610.8	594297	3.0
  1	nrca2	2.5	-1.0	2.7	613.2	593823	3.0
  1	nrca2	2.7	-1.0	2.8	607.0	591350	3.0
  1	nrca2	2.6	-1.0	2.8	612.4	598981	3.0
  1	nrca2	0.4	3.8	3.9	551.1	777923	3.0
  1	nrca2	0.5	3.8	3.8	561.7	775386	3.0
  1	nrca2	0.4	3.7	3.7	517.9	774449	3.0
  1	nrca2	0.5	3.8	3.9	559.8	773978	3.0
  1	nrca3	2.2	-1.3	2.6	1,062.7	224730	3.0
  1	nrca3	2.2	-1.2	2.5	1,009.3	222596	3.0
  1	nrca3	2.2	-1.3	2.6	1,061.3	222385	3.0
  1	nrca3	2.2	-1.2	2.5	1,016.7	221007	3.0
  1	nrca3	-0.6	2.3	2.3	589.5	294668	3.0
  1	nrca3	-0.7	2.4	2.5	606.5	295708	3.0
  1	nrca3	-0.7	2.3	2.4	616.0	298583	3.0
  1	nrca3	-0.7	2.4	2.5	612.5	296576	3.0
  1	nrca4	-2.8	2.5	3.8	643.4	766828	3.0
  1	nrca4	-2.8	2.5	3.8	649.0	771125	3.0
  1	nrca4	-2.8	2.5	3.7	643.9	768010	3.0
  1	nrca4	-2.8	2.6	3.8	645.5	770421	3.0
  1	nrcb1	-3.0	3.0	4.2	839.8	452570	3.0
  1	nrcb1	-2.9	3.1	4.2	845.3	455441	3.0
  1	nrcb1	-2.8	3.0	4.1	843.3	453677	3.0
  1	nrcb1	-3.0	3.0	4.3	848.5	455588	3.0
  1	nrcb2	-0.7	-2.0	2.1	586.2	416024	3.0
  1	nrcb2	2.0	-1.1	2.3	964.5	324252	3.0
  1	nrcb2	2.4	-1.0	2.6	941.2	320356	3.0
  1	nrcb2	2.5	-1.0	2.6	944.2	325094	3.0
  1	nrcb2	2.3	-1.0	2.5	954.0	325294	3.0
  1	nrcb2	-3.0	2.4	3.8	682.6	517163	3.0
  1	nrcb2	-3.0	2.5	3.9	690.3	512451	3.0
  1	nrcb2	-2.9	2.5	3.8	689.6	518339	3.0
  1	nrcb2	-3.0	2.5	3.9	682.4	514124	3.0
  1	nrcb3	-1.6	4.0	4.3	881.3	548761	3.0
  1	nrcb3	-1.5	4.0	4.3	776.5	554965	3.0
  1	nrcb3	-1.4	3.9	4.2	875.3	549549	3.0

  showing 40 of 49

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• fail
  F182M_o001: 90/192 exposures misaligned vs their visit consensus

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues.

  checkpoint_m2_F182M_o001_latest.json

  what is affected, and why

  Affected: 8/8 detectors — spread across detectors, so the frame as a whole moved: look at the offsets table and whether these exposures were regenerated from _cal after the table changed. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcb316/24

  nrcb416/24

  nrca112/24

  nrcb212/24

  nrca310/24

  nrca28/24

  nrca48/24

  nrcb18/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrca1	-0.6	-3.2	3.3	566.8	751737	3.0
  1	nrca1	-0.5	-3.2	3.2	541.6	749833	3.0
  1	nrca1	-0.4	-3.2	3.2	521.5	746431	3.0
  1	nrca1	-0.5	-3.2	3.2	558.2	754615	3.0
  1	nrca1	0.1	2.0	2.0	465.0	557639	3.0
  1	nrca1	0.4	2.0	2.1	574.1	552875	3.0
  1	nrca1	0.0	2.1	2.1	427.5	555855	3.0
  1	nrca1	0.6	2.0	2.1	673.5	556638	3.0
  1	nrca1	-0.5	-2.4	2.4	475.3	766827	3.0
  1	nrca1	-0.6	-2.4	2.5	503.3	767580	3.0
  1	nrca1	-0.6	-2.4	2.4	560.9	763687	3.0
  1	nrca1	-0.5	-2.4	2.5	487.9	769959	3.0
  1	nrca2	-0.3	-2.2	2.2	340.2	1277443	3.0
  1	nrca2	-0.3	-2.1	2.2	334.9	1280454	3.0
  1	nrca2	-0.2	-2.1	2.1	319.8	1280781	3.0
  1	nrca2	-0.3	-2.1	2.2	346.4	1283512	3.0
  1	nrca2	-0.0	2.6	2.6	316.4	1117026	3.0
  1	nrca2	0.3	2.7	2.7	396.7	1111069	3.0
  1	nrca2	-0.1	2.6	2.6	352.3	1116398	3.0
  1	nrca2	0.5	2.8	2.8	470.5	1113670	3.0
  1	nrca3	0.6	-2.0	2.1	494.6	975380	3.0
  1	nrca3	0.6	-2.0	2.0	510.8	977519	3.0
  1	nrca3	0.6	-1.9	2.0	478.9	981232	3.0
  1	nrca3	0.6	-2.0	2.1	497.8	972038	3.0
  1	nrca3	2.0	-0.4	2.0	521.5	802572	3.0
  1	nrca3	2.0	-0.3	2.0	492.9	798380	3.0
  1	nrca3	-0.3	3.5	3.5	461.3	641073	3.0
  1	nrca3	-0.2	3.5	3.5	434.3	633722	3.0
  1	nrca3	-0.3	3.5	3.5	475.4	637383	3.0
  1	nrca3	-0.0	3.4	3.4	405.6	633812	3.0
  1	nrca4	0.1	3.9	3.9	309.2	1130681	3.0
  1	nrca4	0.2	4.0	4.0	326.1	1131440	3.0
  1	nrca4	-0.0	3.9	3.9	300.5	1129545	3.0
  1	nrca4	0.3	4.1	4.1	357.5	1129707	3.0
  1	nrca4	-1.1	2.4	2.6	498.7	1263662	3.0
  1	nrca4	-1.0	2.5	2.7	483.7	1265704	3.0
  1	nrca4	-1.0	2.5	2.7	483.9	1270423	3.0
  1	nrca4	-1.1	2.5	2.7	495.7	1272216	3.0
  1	nrcb1	-0.1	4.0	4.0	296.1	1064480	3.0
  1	nrcb1	-0.3	4.1	4.1	360.9	1053701	3.0

  showing 40 of 90

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• fail
  F187N_o001: 162/384 exposures misaligned vs their visit consensus

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues.

  checkpoint_m2_F187N_o001_latest.json

  what is affected, and why

  Affected: 8/8 detectors — spread across detectors, so the frame as a whole moved: look at the offsets table and whether these exposures were regenerated from _cal after the table changed. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcb430/48

  nrcb228/48

  nrcb328/48

  nrca117/48

  nrcb117/48

  nrca316/48

  nrca416/48

  nrca210/48

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrca1	-0.1	-2.9	2.9	623.8	317521	3.0
  1	nrca1	-0.2	-2.8	2.8	629.5	317569	3.0
  1	nrca1	-0.2	-2.7	2.7	653.0	319193	3.0
  1	nrca1	-0.2	-2.9	2.9	659.5	319552	3.0
  1	nrca1	0.4	2.3	2.3	872.7	208613	3.0
  1	nrca1	0.5	2.5	2.5	910.0	208954	3.0
  1	nrca1	0.5	2.4	2.5	951.0	207627	3.0
  1	nrca1	0.5	2.5	2.5	917.3	206152	3.0
  1	nrca1	-0.4	-2.7	2.8	597.5	112581	3.0
  1	nrca1	-0.4	-2.8	2.8	570.5	113228	3.0
  1	nrca1	-0.3	-2.9	2.9	536.0	112305	3.0
  1	nrca1	-0.2	-2.6	2.6	512.0	111900	3.0
  1	nrca1	0.2	2.4	2.4	992.0	82651	3.0
  1	nrca1	0.3	2.1	2.2	1,056.0	83046	3.0
  1	nrca1	0.4	2.3	2.3	1,135.0	81742	3.0
  1	nrca1	0.2	2.3	2.3	1,028.0	81829	3.0
  1	nrca1	-0.5	-2.0	2.0	584.5	114605	3.0
  1	nrca2	-0.3	-2.0	2.0	459.5	589206	3.0
  1	nrca2	0.2	2.8	2.8	481.0	511799	3.0
  1	nrca2	0.2	3.0	3.0	505.4	504948	3.0
  1	nrca2	0.3	2.9	3.0	522.9	505968	3.0
  1	nrca2	0.3	2.9	3.0	502.7	509861	3.0
  1	nrca2	-0.4	-2.0	2.0	477.0	271787	3.0
  1	nrca2	0.1	2.9	2.9	423.3	205303	3.0
  1	nrca2	0.1	2.7	2.7	439.3	202538	3.0
  1	nrca2	0.2	2.9	2.9	463.0	203267	3.0
  1	nrca2	0.0	2.8	2.8	419.0	205616	3.0
  1	nrca3	0.6	-2.3	2.4	620.8	455860	3.0
  1	nrca3	0.5	-2.2	2.3	620.7	452594	3.0
  1	nrca3	0.5	-2.2	2.2	605.5	453653	3.0
  1	nrca3	0.5	-2.3	2.4	606.8	450666	3.0
  1	nrca3	-0.1	2.9	2.9	565.2	273644	3.0
  1	nrca3	-0.1	3.1	3.1	568.5	272062	3.0
  1	nrca3	0.1	3.0	3.0	542.8	271843	3.0
  1	nrca3	-0.1	3.1	3.1	553.8	272386	3.0
  1	nrca3	0.2	-2.2	2.2	461.7	185494	3.0
  1	nrca3	0.4	-2.3	2.3	491.7	184463	3.0
  1	nrca3	0.5	-2.3	2.4	514.7	182330	3.0
  1	nrca3	0.4	-2.1	2.2	740.5	179655	3.0
  1	nrca3	-0.2	3.1	3.1	507.0	104621	3.0

  showing 40 of 162

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• fail
  F210M_o001: 97/192 exposures misaligned vs their visit consensus

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues.

  checkpoint_m2_F210M_o001_latest.json

  what is affected, and why

  Affected: 8/8 detectors — spread across detectors, so the frame as a whole moved: look at the offsets table and whether these exposures were regenerated from _cal after the table changed. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcb216/24

  nrcb316/24

  nrcb416/24

  nrca112/24

  nrca312/24

  nrca29/24

  nrca48/24

  nrcb18/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrca1	-0.7	-3.1	3.2	494.2	1018500	3.0
  1	nrca1	-0.7	-3.1	3.2	508.2	1027526	3.0
  1	nrca1	-0.7	-3.1	3.1	504.6	1029415	3.0
  1	nrca1	-0.5	-3.1	3.2	461.4	1021282	3.0
  1	nrca1	0.3	2.1	2.1	504.2	800119	3.0
  1	nrca1	0.0	2.2	2.2	384.1	791316	3.0
  1	nrca1	0.4	2.1	2.2	534.5	792868	3.0
  1	nrca1	0.2	2.2	2.2	472.1	791351	3.0
  1	nrca1	-0.7	-2.1	2.2	487.4	1033271	3.0
  1	nrca1	-0.9	-2.1	2.3	521.6	1031784	3.0
  1	nrca1	-0.7	-2.1	2.3	493.0	1033371	3.0
  1	nrca1	-1.0	-2.0	2.2	529.3	1038683	3.0
  1	nrca2	0.2	-2.2	2.2	323.6	1473848	3.0
  1	nrca2	0.2	-2.2	2.2	319.4	1469534	3.0
  1	nrca2	0.1	-2.2	2.2	307.9	1468537	3.0
  1	nrca2	0.3	-2.1	2.1	361.4	1467242	3.0
  1	nrca2	1.9	-1.1	2.2	482.1	1360172	3.0
  1	nrca2	0.6	2.7	2.7	433.1	1290212	3.0
  1	nrca2	0.2	2.7	2.7	344.2	1285123	3.0
  1	nrca2	0.6	2.8	2.8	437.1	1281650	3.0
  1	nrca2	0.4	2.7	2.8	399.7	1285205	3.0
  1	nrca3	-0.2	-2.1	2.1	353.8	1186302	3.0
  1	nrca3	-0.2	-2.1	2.1	360.4	1184751	3.0
  1	nrca3	-0.2	-2.1	2.1	352.2	1182135	3.0
  1	nrca3	-0.1	-2.1	2.1	343.9	1182286	3.0
  1	nrca3	-0.7	3.5	3.5	514.2	878627	3.0
  1	nrca3	-0.8	3.5	3.6	536.2	874756	3.0
  1	nrca3	-0.7	3.5	3.5	502.1	875088	3.0
  1	nrca3	-0.7	3.5	3.6	516.7	875571	3.0
  1	nrca3	-1.9	1.7	2.6	559.5	1051443	3.0
  1	nrca3	-1.8	1.7	2.5	553.2	1053514	3.0
  1	nrca3	-1.9	1.7	2.5	558.8	1051597	3.0
  1	nrca3	-1.9	1.7	2.5	595.3	1046395	3.0
  1	nrca4	0.2	3.8	3.8	336.7	1331423	3.0
  1	nrca4	-0.0	3.8	3.8	292.3	1329867	3.0
  1	nrca4	0.2	3.9	3.9	320.4	1336383	3.0
  1	nrca4	0.1	3.9	3.9	307.0	1343225	3.0
  1	nrca4	-1.4	2.3	2.7	518.0	1447780	3.0
  1	nrca4	-1.3	2.5	2.8	515.6	1454262	3.0
  1	nrca4	-1.3	2.4	2.8	516.0	1450527	3.0

  showing 40 of 97

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• fail
  F212N_o001: 84/192 exposures misaligned vs their visit consensus

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues.

  checkpoint_m2_F212N_o001_latest.json

  what is affected, and why

  Affected: 8/8 detectors — spread across detectors, so the frame as a whole moved: look at the offsets table and whether these exposures were regenerated from _cal after the table changed. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcb216/24

  nrcb415/24

  nrca112/24

  nrcb19/24

  nrca28/24

  nrca38/24

  nrca48/24

  nrcb38/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrca1	-0.3	-3.1	3.1	780.0	105511	3.0
  1	nrca1	-0.1	-3.0	3.0	683.5	103975	3.0
  1	nrca1	-0.4	-2.9	3.0	824.5	104656	3.0
  1	nrca1	-0.3	-3.0	3.1	767.0	105103	3.0
  1	nrca1	0.2	2.6	2.6	1,490.0	82628	3.0
  1	nrca1	0.3	2.7	2.7	1,607.0	82872	3.0
  1	nrca1	0.5	2.7	2.7	1,815.0	82777	3.0
  1	nrca1	0.4	2.7	2.7	1,725.0	82408	3.0
  1	nrca1	-0.2	-2.1	2.1	735.5	107247	3.0
  1	nrca1	-0.6	-1.9	2.0	880.5	104768	3.0
  1	nrca1	-0.5	-2.0	2.1	849.5	105350	3.0
  1	nrca1	-0.5	-2.0	2.0	866.5	106249	3.0
  1	nrca2	0.1	3.4	3.4	958.0	164116	3.0
  1	nrca2	0.1	3.4	3.4	942.5	161361	3.0
  1	nrca2	0.3	3.5	3.5	1,096.0	162070	3.0
  1	nrca2	0.2	3.5	3.5	1,018.5	163675	3.0
  1	nrca2	-1.5	1.7	2.2	1,208.0	205076	3.0
  1	nrca2	-1.2	1.9	2.3	1,169.7	203938	3.0
  1	nrca2	-1.2	1.9	2.2	1,171.0	204495	3.0
  1	nrca2	-1.3	1.9	2.3	1,183.3	202366	3.0
  1	nrca3	0.3	-2.1	2.1	939.0	158540	3.0
  1	nrca3	0.3	-2.1	2.1	972.5	160641	3.0
  1	nrca3	0.2	-2.0	2.0	941.0	159689	3.0
  1	nrca3	0.3	-2.1	2.1	950.0	159026	3.0
  1	nrca3	-0.2	3.2	3.2	727.5	98555	3.0
  1	nrca3	-0.2	3.2	3.2	733.0	97478	3.0
  1	nrca3	-0.1	3.1	3.1	697.5	99222	3.0
  1	nrca3	-0.2	3.2	3.2	735.0	97878	3.0
  1	nrca4	-0.0	3.0	3.0	612.7	204887	3.0
  1	nrca4	-0.1	3.0	3.0	630.0	204038	3.0
  1	nrca4	0.1	3.0	3.0	644.7	205036	3.0
  1	nrca4	0.1	3.0	3.0	634.0	206340	3.0
  1	nrca4	-1.6	1.5	2.2	946.8	276605	3.0
  1	nrca4	-1.5	1.7	2.2	953.0	276144	3.0
  1	nrca4	-1.4	1.7	2.2	949.0	276859	3.0
  1	nrca4	-1.5	1.7	2.2	962.2	277471	3.0
  1	nrcb1	-0.5	2.9	3.0	964.0	159843	3.0
  1	nrcb1	-0.6	2.9	2.9	961.5	148637	3.0
  1	nrcb1	-0.8	2.9	3.1	1,087.5	160086	3.0
  1	nrcb1	-0.7	2.9	3.0	1,037.0	159053	3.0

  showing 40 of 84

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• fail
  F405N_o001: 1/48 exposures misaligned vs their visit consensus

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues.

  checkpoint_m2_F405N_o001_latest.json

  what is affected, and why

  Affected: 1/2 detectors — confined to nrcblong, which points at a detector-local defect (distortion reference, a bad filteroffset, or one chip's frames never re-aligned) rather than a whole-frame misalignment. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcblong1/24

  nrcalong0/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrcblong	-0.7	1.9	2.0	2,021.0	197692	3.0

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• fail
  F466N_o001: 4/48 exposures misaligned vs their visit consensus

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues.

  checkpoint_m2_F466N_o001_latest.json

  what is affected, and why

  Affected: 1/2 detectors — confined to nrcblong, which points at a detector-local defect (distortion reference, a bad filteroffset, or one chip's frames never re-aligned) rather than a whole-frame misalignment. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcblong4/24

  nrcalong0/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrcblong	-0.5	2.1	2.1	2,890.0	69007	3.0
  1	nrcblong	-0.6	2.0	2.1	3,006.0	69018	3.0
  1	nrcblong	-0.7	2.0	2.1	3,165.0	68357	3.0
  1	nrcblong	-0.6	2.0	2.1	3,017.0	68196	3.0

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F150W: 49/192 exposures misaligned vs their visit consensus (checkpoint predates the frames)

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues. NOTE: the reduced frames are NEWER than this checkpoint, so the correction it triggered has probably already been applied — re-run the m2 checkpoint to confirm rather than treating this as current.

  checkpoint_m2_F150W_latest.json

  what is affected, and why

  Affected: 8/8 detectors — spread across detectors, so the frame as a whole moved: look at the offsets table and whether these exposures were regenerated from _cal after the table changed. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcb29/24

  nrca28/24

  nrca38/24

  nrcb48/24

  nrca14/24

  nrca44/24

  nrcb14/24

  nrcb34/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrca1	0.5	-2.1	2.2	798.0	267925	3.0
  1	nrca1	0.5	-2.0	2.1	806.2	268339	3.0
  1	nrca1	0.4	-2.0	2.0	767.0	268027	3.0
  1	nrca1	0.6	-2.0	2.1	832.0	270007	3.0
  1	nrca2	2.8	-1.0	3.0	651.9	606285	3.0
  1	nrca2	2.6	-1.1	2.9	650.6	605770	3.0
  1	nrca2	2.8	-1.0	3.0	643.2	603476	3.0
  1	nrca2	2.7	-1.0	2.9	650.2	609854	3.0
  1	nrca2	0.5	3.8	3.8	613.6	791460	3.0
  1	nrca2	0.6	3.8	3.8	626.5	788213	3.0
  1	nrca2	0.4	3.7	3.7	578.5	786374	3.0
  1	nrca2	0.5	3.8	3.9	624.4	787068	3.0
  1	nrca3	2.3	-1.3	2.6	1,113.7	225445	3.0
  1	nrca3	2.2	-1.2	2.5	1,065.7	224698	3.0
  1	nrca3	2.3	-1.3	2.6	1,114.0	225493	3.0
  1	nrca3	2.3	-1.2	2.6	1,071.0	224453	3.0
  1	nrca3	-0.5	2.3	2.4	576.0	297967	3.0
  1	nrca3	-0.5	2.3	2.4	583.5	298710	3.0
  1	nrca3	-0.5	2.3	2.4	601.8	301732	3.0
  1	nrca3	-0.5	2.4	2.4	580.5	299249	3.0
  1	nrca4	-2.8	2.5	3.8	683.7	782010	3.0
  1	nrca4	-2.7	2.6	3.8	688.7	786201	3.0
  1	nrca4	-2.8	2.5	3.7	685.3	783375	3.0
  1	nrca4	-2.8	2.6	3.8	686.5	786467	3.0
  1	nrcb1	-2.9	3.0	4.2	916.5	468386	3.0
  1	nrcb1	-2.9	3.1	4.3	919.5	465702	3.0
  1	nrcb1	-2.7	3.1	4.1	918.0	466035	3.0
  1	nrcb1	-2.9	3.1	4.3	918.8	467201	3.0
  1	nrcb2	-0.5	-2.0	2.0	604.7	419242	3.0
  1	nrcb2	2.1	-1.1	2.4	1,050.8	329286	3.0
  1	nrcb2	2.6	-1.0	2.8	1,019.8	325668	3.0
  1	nrcb2	2.6	-1.0	2.8	1,026.2	329678	3.0
  1	nrcb2	2.4	-1.0	2.6	1,037.5	331620	3.0
  1	nrcb2	-2.8	2.3	3.7	730.1	529390	3.0
  1	nrcb2	-2.8	2.4	3.7	743.7	526718	3.0
  1	nrcb2	-2.7	2.5	3.7	741.6	529239	3.0
  1	nrcb2	-2.9	2.4	3.8	739.0	527223	3.0
  1	nrcb3	-1.6	4.1	4.4	823.1	564026	3.0
  1	nrcb3	-1.5	4.2	4.5	831.8	569010	3.0
  1	nrcb3	-1.5	4.1	4.4	822.9	566076	3.0

  showing 40 of 49

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F182M: 84/192 exposures misaligned vs their visit consensus (checkpoint predates the frames)

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues. NOTE: the reduced frames are NEWER than this checkpoint, so the correction it triggered has probably already been applied — re-run the m2 checkpoint to confirm rather than treating this as current.

  checkpoint_m2_F182M_latest.json

  what is affected, and why

  Affected: 8/8 detectors — spread across detectors, so the frame as a whole moved: look at the offsets table and whether these exposures were regenerated from _cal after the table changed. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcb417/24

  nrcb316/24

  nrcb214/24

  nrca312/24

  nrca48/24

  nrcb18/24

  nrca15/24

  nrca24/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrca1	-0.2	-2.7	2.7	428.7	767049	3.0
  1	nrca1	-0.2	-2.7	2.7	401.7	765887	3.0
  1	nrca1	-0.1	-2.7	2.7	416.1	764095	3.0
  1	nrca1	-0.2	-2.7	2.7	412.6	768650	3.0
  1	nrca1	-0.2	-2.0	2.0	397.6	785899	3.0
  1	nrca2	-0.2	2.5	2.5	346.3	1134474	3.0
  1	nrca2	0.1	2.7	2.7	336.1	1128945	3.0
  1	nrca2	-0.2	2.5	2.6	386.1	1133670	3.0
  1	nrca2	0.4	2.7	2.7	414.8	1129696	3.0
  1	nrca3	0.8	-2.1	2.2	511.1	991737	3.0
  1	nrca3	0.8	-2.1	2.2	521.4	998936	3.0
  1	nrca3	0.9	-2.0	2.2	523.1	1000003	3.0
  1	nrca3	0.8	-2.1	2.2	510.8	991411	3.0
  1	nrca3	2.2	-0.5	2.2	581.3	820447	3.0
  1	nrca3	2.0	-0.3	2.1	505.4	819698	3.0
  1	nrca3	2.2	-0.5	2.2	556.4	815232	3.0
  1	nrca3	2.1	-0.4	2.1	530.2	816728	3.0
  1	nrca3	-0.2	3.2	3.2	449.3	655138	3.0
  1	nrca3	-0.1	3.2	3.2	416.8	648541	3.0
  1	nrca3	-0.2	3.2	3.2	455.8	650368	3.0
  1	nrca3	0.1	3.1	3.1	430.0	650872	3.0
  1	nrca4	-0.2	3.5	3.5	332.1	1158106	3.0
  1	nrca4	-0.1	3.7	3.7	313.8	1160461	3.0
  1	nrca4	-0.2	3.5	3.5	342.2	1159653	3.0
  1	nrca4	0.1	3.7	3.7	321.1	1159216	3.0
  1	nrca4	-1.3	2.0	2.4	490.0	1288197	3.0
  1	nrca4	-1.2	2.1	2.4	481.4	1289616	3.0
  1	nrca4	-1.2	2.1	2.4	484.3	1295395	3.0
  1	nrca4	-1.2	2.1	2.4	492.1	1295886	3.0
  1	nrcb1	0.1	4.0	4.0	313.4	1092720	3.0
  1	nrcb1	-0.2	4.1	4.1	354.5	1083212	3.0
  1	nrcb1	0.1	3.9	3.9	326.9	1088396	3.0
  1	nrcb1	-0.4	4.2	4.2	401.8	1090793	3.0
  1	nrcb1	-1.6	2.7	3.1	595.7	968337	3.0
  1	nrcb1	-1.8	2.9	3.4	609.8	974309	3.0
  1	nrcb1	-1.8	2.9	3.4	606.1	970624	3.0
  1	nrcb1	-1.8	2.9	3.4	608.7	974478	3.0
  1	nrcb2	2.7	-1.6	3.1	696.3	759394	3.0
  1	nrcb2	3.2	-1.5	3.6	684.7	753982	3.0
  1	nrcb2	2.7	-1.6	3.2	697.7	760715	3.0

  showing 40 of 84

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F187N: 156/384 exposures misaligned vs their visit consensus (checkpoint predates the frames)

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues. NOTE: the reduced frames are NEWER than this checkpoint, so the correction it triggered has probably already been applied — re-run the m2 checkpoint to confirm rather than treating this as current.

  checkpoint_m2_F187N_latest.json

  what is affected, and why

  Affected: 8/8 detectors — spread across detectors, so the frame as a whole moved: look at the offsets table and whether these exposures were regenerated from _cal after the table changed. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcb329/48

  nrcb427/48

  nrcb226/48

  nrcb117/48

  nrca116/48

  nrca316/48

  nrca416/48

  nrca29/48

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrca1	0.1	-2.5	2.5	652.8	307972	3.0
  1	nrca1	0.1	-2.4	2.4	657.2	309612	3.0
  1	nrca1	0.1	-2.3	2.3	625.8	309308	3.0
  1	nrca1	0.1	-2.5	2.5	635.8	310325	3.0
  1	nrca1	0.5	2.3	2.4	963.3	207257	3.0
  1	nrca1	0.5	2.5	2.6	992.0	206928	3.0
  1	nrca1	0.6	2.4	2.5	1,033.7	205924	3.0
  1	nrca1	0.6	2.5	2.5	1,004.7	204669	3.0
  1	nrca1	-0.3	-2.4	2.4	505.5	109489	3.0
  1	nrca1	-0.2	-2.4	2.4	494.5	109664	3.0
  1	nrca1	-0.1	-2.5	2.5	461.5	109476	3.0
  1	nrca1	-0.1	-2.3	2.3	446.5	109189	3.0
  1	nrca1	0.3	2.4	2.4	1,073.0	81048	3.0
  1	nrca1	0.4	2.1	2.2	1,143.0	81982	3.0
  1	nrca1	0.5	2.3	2.3	1,202.0	80348	3.0
  1	nrca1	0.4	2.3	2.4	1,137.0	80016	3.0
  1	nrca2	0.0	2.8	2.8	449.7	505485	3.0
  1	nrca2	0.1	3.0	3.0	469.9	499175	3.0
  1	nrca2	0.2	2.9	2.9	499.3	500267	3.0
  1	nrca2	0.1	3.0	3.0	476.7	502457	3.0
  1	nrca2	-0.1	2.9	2.9	474.0	199900	3.0
  1	nrca2	-0.1	2.7	2.7	466.3	199854	3.0
  1	nrca2	-0.0	2.8	2.8	440.0	198573	3.0
  1	nrca2	-0.1	2.8	2.8	481.7	199271	3.0
  1	nrca2	-1.1	1.7	2.0	874.3	249705	3.0
  1	nrca3	0.7	-2.3	2.4	676.0	450223	3.0
  1	nrca3	0.6	-2.2	2.3	672.5	448597	3.0
  1	nrca3	0.6	-2.2	2.2	656.0	447729	3.0
  1	nrca3	0.6	-2.3	2.4	661.8	445802	3.0
  1	nrca3	-0.1	2.6	2.6	566.0	267228	3.0
  1	nrca3	-0.1	2.8	2.8	574.0	265924	3.0
  1	nrca3	0.1	2.7	2.7	564.8	263895	3.0
  1	nrca3	0.1	2.8	2.8	563.0	265647	3.0
  1	nrca3	0.3	-2.2	2.2	491.7	180385	3.0
  1	nrca3	0.5	-2.3	2.3	786.5	180108	3.0
  1	nrca3	0.6	-2.4	2.4	835.5	178322	3.0
  1	nrca3	0.5	-2.2	2.3	782.0	174798	3.0
  1	nrca3	-0.2	2.7	2.7	508.0	100809	3.0
  1	nrca3	-0.1	2.5	2.5	482.0	100555	3.0
  1	nrca3	-0.2	2.6	2.6	486.5	100843	3.0

  showing 40 of 156

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F210M: 86/192 exposures misaligned vs their visit consensus (checkpoint predates the frames)

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues. NOTE: the reduced frames are NEWER than this checkpoint, so the correction it triggered has probably already been applied — re-run the m2 checkpoint to confirm rather than treating this as current.

  checkpoint_m2_F210M_latest.json

  what is affected, and why

  Affected: 8/8 detectors — spread across detectors, so the frame as a whole moved: look at the offsets table and whether these exposures were regenerated from _cal after the table changed. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcb217/24

  nrcb316/24

  nrcb414/24

  nrca110/24

  nrca39/24

  nrca48/24

  nrcb18/24

  nrca24/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrca1	-0.4	-2.7	2.7	458.6	1029912	3.0
  1	nrca1	-0.5	-2.7	2.7	470.6	1039573	3.0
  1	nrca1	-0.5	-2.6	2.6	474.9	1040450	3.0
  1	nrca1	-0.3	-2.7	2.7	412.1	1031564	3.0
  1	nrca1	0.1	2.1	2.1	407.0	802281	3.0
  1	nrca1	0.4	2.0	2.0	561.9	804888	3.0
  1	nrca1	0.3	2.1	2.1	502.9	802095	3.0
  1	nrca1	-0.7	-1.9	2.1	507.8	1044379	3.0
  1	nrca1	-0.5	-2.0	2.1	471.7	1047081	3.0
  1	nrca1	-0.7	-1.9	2.0	519.1	1049034	3.0
  1	nrca2	0.5	2.6	2.7	433.9	1297784	3.0
  1	nrca2	0.2	2.6	2.6	340.1	1294670	3.0
  1	nrca2	0.6	2.7	2.8	440.3	1291838	3.0
  1	nrca2	0.4	2.7	2.7	403.8	1294229	3.0
  1	nrca3	0.3	-2.0	2.0	357.5	1195256	3.0
  1	nrca3	-0.5	3.2	3.3	493.2	891050	3.0
  1	nrca3	-0.6	3.4	3.4	516.7	886170	3.0
  1	nrca3	-0.5	3.3	3.3	475.6	886946	3.0
  1	nrca3	-0.5	3.3	3.4	495.8	886662	3.0
  1	nrca3	-1.7	1.5	2.3	546.8	1062647	3.0
  1	nrca3	-1.6	1.5	2.2	532.5	1066434	3.0
  1	nrca3	-1.6	1.5	2.2	540.3	1062139	3.0
  1	nrca3	-1.6	1.5	2.2	539.4	1058709	3.0
  1	nrca4	-0.1	3.6	3.6	292.5	1344470	3.0
  1	nrca4	-0.3	3.6	3.6	329.5	1345110	3.0
  1	nrca4	-0.1	3.7	3.7	291.4	1350775	3.0
  1	nrca4	-0.2	3.6	3.6	309.9	1357521	3.0
  1	nrca4	-1.5	2.1	2.6	509.1	1460910	3.0
  1	nrca4	-1.4	2.3	2.7	500.9	1462867	3.0
  1	nrca4	-1.5	2.2	2.6	503.6	1461404	3.0
  1	nrca4	-1.5	2.2	2.7	504.2	1461203	3.0
  1	nrcb1	-0.2	4.0	4.0	346.7	1241180	3.0
  1	nrcb1	0.1	3.9	3.9	320.2	1242667	3.0
  1	nrcb1	-0.3	4.0	4.0	385.8	1240395	3.0
  1	nrcb1	-0.1	3.9	3.9	320.6	1242937	3.0
  1	nrcb1	-1.5	2.5	2.9	544.2	1142217	3.0
  1	nrcb1	-1.8	2.7	3.2	558.6	1146948	3.0
  1	nrcb1	-1.6	2.6	3.1	553.1	1146722	3.0
  1	nrcb1	-1.7	2.7	3.2	551.6	1138312	3.0
  1	nrcb2	-0.5	-2.1	2.2	428.5	1054359	3.0

  showing 40 of 86

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F212N: 130/216 exposures misaligned vs their visit consensus (checkpoint predates the frames)

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues. NOTE: the reduced frames are NEWER than this checkpoint, so the correction it triggered has probably already been applied — re-run the m2 checkpoint to confirm rather than treating this as current.

  checkpoint_m2_F212N_latest.json

  what is affected, and why

  Affected: 9/9 detectors — spread across detectors, so the frame as a whole moved: look at the offsets table and whether these exposures were regenerated from _cal after the table changed. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcb24/24

  nrcb324/24

  nrcb424/24

  nrcb218/24

  nrcb19/24

  nrca18/24

  nrca28/24

  nrca48/24

  nrca37/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrca1	-0.1	-2.6	2.6	684.0	101297	3.0
  1	nrca1	0.1	-2.6	2.6	722.5	100048	3.0
  1	nrca1	-0.2	-2.5	2.5	743.0	100026	3.0
  1	nrca1	-0.1	-2.6	2.6	690.0	100705	3.0
  1	nrca1	0.2	2.7	2.7	1,539.0	80734	3.0
  1	nrca1	0.3	2.7	2.8	1,677.0	80551	3.0
  1	nrca1	0.5	2.7	2.8	1,873.0	80441	3.0
  1	nrca1	0.4	2.8	2.8	1,786.0	79936	3.0
  1	nrca2	-0.1	3.7	3.7	969.5	158468	3.0
  1	nrca2	-0.1	3.7	3.7	945.0	157281	3.0
  1	nrca2	0.2	3.8	3.8	1,010.0	157469	3.0
  1	nrca2	-0.0	3.8	3.8	901.5	158202	3.0
  1	nrca2	-1.5	1.7	2.2	1,231.3	199828	3.0
  1	nrca2	-1.2	2.0	2.3	1,214.0	198416	3.0
  1	nrca2	-1.2	1.9	2.2	1,199.3	199010	3.0
  1	nrca2	-1.3	1.9	2.3	1,214.0	195930	3.0
  1	nrca3	0.4	-2.0	2.1	967.5	152222	3.0
  1	nrca3	0.5	-2.0	2.1	1,014.5	153230	3.0
  1	nrca3	0.5	-2.0	2.1	976.0	152502	3.0
  1	nrca3	-0.2	2.9	2.9	745.0	93894	3.0
  1	nrca3	-0.2	2.9	2.9	742.0	92427	3.0
  1	nrca3	-0.1	2.9	2.9	705.5	94548	3.0
  1	nrca3	-0.2	3.0	3.0	741.5	93658	3.0
  1	nrca4	-0.3	2.6	2.6	727.3	195052	3.0
  1	nrca4	-0.3	2.6	2.7	744.0	194258	3.0
  1	nrca4	-0.2	2.7	2.7	708.3	194613	3.0
  1	nrca4	-0.2	2.7	2.7	718.3	197154	3.0
  1	nrca4	-1.8	1.2	2.1	914.5	265148	3.0
  1	nrca4	-1.7	1.4	2.1	943.8	266433	3.0
  1	nrca4	-1.6	1.4	2.1	922.2	265820	3.0
  1	nrca4	-1.7	1.4	2.2	941.2	266465	3.0
  1	nrcb1	-2.7	4.7	5.5	1,221.5	157740	3.0
  1	nrcb1	-2.9	4.8	5.6	1,187.5	146649	3.0
  1	nrcb1	-2.9	4.8	5.6	1,295.0	157216	3.0
  1	nrcb1	-2.9	4.6	5.4	1,258.5	155494	3.0
  1	nrcb1	-2.8	2.3	3.6	1,201.5	133429	3.0
  1	nrcb1	-3.0	2.5	3.9	1,233.5	133514	3.0
  1	nrcb1	-3.0	2.5	4.0	1,215.0	132978	3.0
  1	nrcb1	-3.0	2.5	3.9	1,219.0	133319	3.0
  1	nrcb1	-1.8	-1.0	2.1	1,094.0	107822	3.0

  showing 40 of 130

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F300M: 72/72 exposures misaligned vs their visit consensus (checkpoint predates the frames)

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues. NOTE: the reduced frames are NEWER than this checkpoint, so the correction it triggered has probably already been applied — re-run the m2 checkpoint to confirm rather than treating this as current.

  checkpoint_m2_F300M_latest.json

  what is affected, and why

  Affected: 3/3 detectors — spread across detectors, so the frame as a whole moved: look at the offsets table and whether these exposures were regenerated from _cal after the table changed. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcalong24/24

  nrcb24/24

  nrcblong24/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrcalong	-3.7	2.1	4.3	1,892.5	267443	3.0
  1	nrcalong	-4.3	2.2	4.8	1,926.0	265678	3.0
  1	nrcalong	-4.3	2.3	4.9	1,961.2	268469	3.0
  1	nrcalong	-4.1	2.4	4.7	1,961.2	268231	3.0
  1	nrcalong	-2.6	2.7	3.8	2,333.7	256947	3.0
  1	nrcalong	-2.5	2.7	3.7	2,304.7	257180	3.0
  1	nrcalong	-3.1	2.6	4.1	2,424.7	256411	3.0
  1	nrcalong	-2.4	2.6	3.6	2,267.0	258166	3.0
  1	nrcalong	-2.1	2.7	3.4	2,300.0	257606	3.0
  1	nrcalong	-2.4	3.0	3.9	2,385.3	254645	3.0
  1	nrcalong	-2.1	2.9	3.6	2,295.0	255431	3.0
  1	nrcalong	-2.4	3.0	3.8	2,431.0	257002	3.0
  1	nrcalong	-1.5	3.8	4.1	2,133.0	246037	3.0
  1	nrcalong	-2.0	4.1	4.5	2,327.7	246433	3.0
  1	nrcalong	-1.5	3.9	4.2	2,122.0	246316	3.0
  1	nrcalong	-1.9	3.9	4.4	2,293.3	245274	3.0
  1	nrcalong	-2.2	3.5	4.2	2,337.0	256142	3.0
  1	nrcalong	-2.8	3.8	4.7	2,503.0	254394	3.0
  1	nrcalong	-2.9	3.7	4.7	2,552.0	255352	3.0
  1	nrcalong	-2.3	3.6	4.3	2,359.0	254393	3.0
  1	nrcalong	-3.0	2.4	3.9	1,865.2	266107	3.0
  1	nrcalong	-3.3	2.5	4.2	1,936.2	265768	3.0
  1	nrcalong	-3.2	2.4	4.0	1,891.5	266526	3.0
  1	nrcalong	-3.5	2.5	4.3	1,960.8	265962	3.0
  1	nrcb	27.0	-6.0	27.6	2,309.8	327713	3.0
  1	nrcb	27.4	-6.7	28.2	2,368.8	330563	3.0
  1	nrcb	27.5	-6.3	28.2	2,369.8	329102	3.0
  1	nrcb	26.9	-6.4	27.7	2,359.2	329929	3.0
  1	nrcb	32.2	-3.1	32.4	2,223.0	317396	3.0
  1	nrcb	31.7	-2.7	31.8	2,227.2	316836	3.0
  1	nrcb	32.2	-3.6	32.4	2,279.8	319078	3.0
  1	nrcb	31.9	-2.9	32.0	2,273.5	321867	3.0
  1	nrcb	29.8	-3.2	30.0	2,322.2	335585	3.0
  1	nrcb	29.0	-2.5	29.1	2,254.5	332308	3.0
  1	nrcb	29.2	-2.3	29.3	2,294.5	336511	3.0
  1	nrcb	29.2	-2.1	29.3	2,238.8	337982	3.0
  1	nrcb	26.9	3.9	27.2	1,758.6	341623	3.0
  1	nrcb	27.1	4.1	27.4	1,767.2	341368	3.0
  1	nrcb	26.5	4.3	26.8	1,698.6	340917	3.0
  1	nrcb	27.1	4.2	27.4	1,763.8	341328	3.0

  showing 40 of 72

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F405N: 3/48 exposures misaligned vs their visit consensus (checkpoint predates the frames)

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues. NOTE: the reduced frames are NEWER than this checkpoint, so the correction it triggered has probably already been applied — re-run the m2 checkpoint to confirm rather than treating this as current.

  checkpoint_m2_F405N_latest.json

  what is affected, and why

  Affected: 1/2 detectors — confined to nrcblong, which points at a detector-local defect (distortion reference, a bad filteroffset, or one chip's frames never re-aligned) rather than a whole-frame misalignment. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcblong3/24

  nrcalong0/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrcblong	-0.6	1.9	2.0	1,997.7	200737	3.0
  1	nrcblong	-0.8	1.9	2.1	2,102.3	200186	3.0
  1	nrcblong	-0.6	1.9	2.0	1,975.3	201025	3.0

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F410M: 2/48 exposures misaligned vs their visit consensus (checkpoint predates the frames)

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues. NOTE: the reduced frames are NEWER than this checkpoint, so the correction it triggered has probably already been applied — re-run the m2 checkpoint to confirm rather than treating this as current.

  checkpoint_m2_F410M_latest.json

  what is affected, and why

  Affected: 1/2 detectors — confined to nrcblong, which points at a detector-local defect (distortion reference, a bad filteroffset, or one chip's frames never re-aligned) rather than a whole-frame misalignment. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcblong2/24

  nrcalong0/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrcblong	-0.5	1.9	2.0	1,897.0	297873	3.0
  1	nrcblong	-0.7	2.0	2.1	2,013.5	299409	3.0

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F466N: 4/48 exposures misaligned vs their visit consensus (checkpoint predates the frames)

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues. NOTE: the reduced frames are NEWER than this checkpoint, so the correction it triggered has probably already been applied — re-run the m2 checkpoint to confirm rather than treating this as current.

  checkpoint_m2_F466N_latest.json

  what is affected, and why

  Affected: 1/2 detectors — confined to nrcblong, which points at a detector-local defect (distortion reference, a bad filteroffset, or one chip's frames never re-aligned) rather than a whole-frame misalignment. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcblong4/24

  nrcalong0/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrcblong	-0.5	2.1	2.2	2,924.0	68269	3.0
  1	nrcblong	-0.6	2.1	2.2	3,051.0	68527	3.0
  1	nrcblong	-0.7	2.0	2.2	3,200.0	67657	3.0
  1	nrcblong	-0.6	2.1	2.2	3,052.0	67425	3.0

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F480M: 2/48 exposures misaligned vs their visit consensus (checkpoint predates the frames)

  An exposure is misaligned when its offset exceeds 2.0 mas AND is significant against the peak error bars. At m2 this CORRECTS the offsets table and stops the run; the crf frames must be regenerated before cataloging continues. NOTE: the reduced frames are NEWER than this checkpoint, so the correction it triggered has probably already been applied — re-run the m2 checkpoint to confirm rather than treating this as current.

  checkpoint_m2_F480M_latest.json

  what is affected, and why

  Affected: 1/2 detectors — confined to nrcblong, which points at a detector-local defect (distortion reference, a bad filteroffset, or one chip's frames never re-aligned) rather than a whole-frame misalignment. fix_alignment SKIPS a frame that already has a RAOFFSET header, so correcting the table alone leaves stale frames in place; regenerate the working copy from _cal instead of re-applying on top.

  Misaligned by detector

  nrcblong2/24

  nrcalong0/24

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  visit	detector	dRA (mas)	dDec (mas)	off (mas)	contrast	pairs	window ("")
  1	nrcblong	-0.5	2.0	2.1	1,709.0	289883	3.0
  1	nrcblong	-0.7	2.0	2.1	1,826.2	287951	3.0

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F300M visit 1: consensus scatter 28.6 mas

  Above 20 mas (10x the 2.0 mas per-exposure tolerance). This is a monitor heuristic, not a pipeline gate.

  checkpoint_m2_F300M_latest.json

  what is affected, and why

  Diagnostic writeupD2 — internal astrometric repeatability · full diagnostic writeup (PDF)

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F150W visit 1: worst tile 16.1 mas at cell (0,4) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F150W_latest.json

  what is affected, and why

  1/36 cells exceed 15 mas, and every one of them is on the mosaic EDGE — that is usually thin coverage (few exposures, so few pairs per cell) rather than a distortion error. Check the pair counts in the table before treating it as a defect. The bulk tie for this visit is 1.42 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (0,4)	16.1	10.1	12.6	35.0	148659

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F150W_o001 visit 1: worst tile 15.3 mas at cell (0,4) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F150W_o001_latest.json

  what is affected, and why

  1/36 cells exceed 15 mas, and every one of them is on the mosaic EDGE — that is usually thin coverage (few exposures, so few pairs per cell) rather than a distortion error. Check the pair counts in the table before treating it as a defect. The bulk tie for this visit is 1.28 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (0,4)	15.3	9.6	11.9	34.0	147535

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F182M visit 1: worst tile 58.6 mas at cell (1,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F182M_latest.json

  what is affected, and why

  36/36 cells exceed 15 mas. They are not confined to the edge, so this is an interior residual: a distortion or per-detector alignment problem, not a coverage artefact. The bulk tie for this visit is 49.29 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (1,0)	58.6	-58.5	3.2	26.5	164541
  (4,0)	55.2	-55.1	-1.3	28.0	32078
  (0,0)	55.1	-54.7	6.6	28.5	162087
  (3,0)	53.4	-53.1	5.6	33.0	25206
  (5,2)	53.4	-52.9	-6.8	30.0	26709
  (2,0)	53.2	-53.0	4.9	31.0	20957
  (4,1)	53.1	-52.9	4.4	33.0	35570
  (5,1)	52.9	-52.7	-4.5	27.0	42412
  (3,1)	52.7	-52.5	-4.2	22.0	23527
  (4,2)	52.1	-51.7	-6.5	41.0	26050
  (5,0)	51.8	-51.4	6.7	21.0	32711
  (2,1)	51.3	-51.2	4.2	30.0	20722
  (3,3)	51.1	-51.0	3.0	28.0	20553
  (4,3)	50.6	-50.3	-5.5	37.0	26166
  (2,3)	49.7	-49.5	4.9	22.0	23864
  (1,2)	49.3	-48.9	-6.0	33.0	22307
  (0,4)	49.2	-48.7	7.4	25.0	18101
  (5,3)	48.7	-47.7	-9.5	29.0	24639
  (0,1)	48.4	-48.2	4.3	33.5	178273
  (1,5)	48.3	-48.2	-3.0	26.0	20199
  (1,1)	47.8	-47.7	-3.8	27.5	168310
  (4,4)	47.6	-47.5	-4.3	30.0	24479
  (3,2)	47.6	-47.3	-5.3	29.0	21780
  (1,4)	47.3	-46.8	6.9	25.0	21117
  (3,4)	47.1	-47.0	-3.5	22.0	22808
  (1,3)	46.8	-46.6	3.7	31.0	23457
  (2,2)	46.6	-46.3	-5.8	31.0	24744
  (2,4)	46.1	-46.1	2.2	21.0	23482
  (0,2)	45.0	-44.9	-3.4	33.0	163091
  (5,4)	44.8	-44.4	-5.9	26.0	21467
  (0,3)	44.4	-44.3	3.6	28.5	167207
  (0,5)	43.8	-43.3	6.4	28.0	149676
  (4,5)	43.7	-42.7	-9.3	31.0	17078
  (2,5)	42.9	-42.6	-5.5	27.0	245463
  (5,5)	40.8	-40.0	-8.1	38.5	156540
  (3,5)	38.8	-38.3	-6.2	27.3	208691

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F182M_o001 visit 1: worst tile 15.0 mas at cell (0,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F182M_o001_latest.json

  what is affected, and why

  1/36 cells exceed 15 mas, and every one of them is on the mosaic EDGE — that is usually thin coverage (few exposures, so few pairs per cell) rather than a distortion error. Check the pair counts in the table before treating it as a defect. The bulk tie for this visit is 1.30 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (0,0)	15.0	-14.0	5.3	28.0	161234

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F187N visit 1: worst tile 58.3 mas at cell (1,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F187N_latest.json

  what is affected, and why

  36/36 cells exceed 15 mas. They are not confined to the edge, so this is an interior residual: a distortion or per-detector alignment problem, not a coverage artefact. The bulk tie for this visit is 49.07 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (1,0)	58.3	-58.1	4.4	30.5	104135
  (4,0)	56.3	-56.0	5.3	38.0	22719
  (5,0)	55.6	-55.3	5.7	24.0	22458
  (3,0)	55.4	-55.1	5.6	43.0	17058
  (5,2)	55.0	-54.2	-9.0	34.0	18881
  (0,0)	54.4	-54.0	6.5	33.0	94466
  (4,1)	53.8	-53.7	3.5	32.0	25856
  (5,1)	53.5	-53.3	-5.2	39.0	28822
  (4,2)	53.1	-52.6	-7.2	49.0	18450
  (3,1)	52.4	-52.3	-3.1	23.0	16399
  (2,0)	51.8	-51.6	4.1	43.5	149969
  (4,3)	51.2	-51.0	-4.4	35.0	19027
  (2,1)	50.0	-49.9	3.0	40.0	155286
  (5,3)	49.5	-49.2	-5.8	32.0	16704
  (0,1)	48.3	-48.1	4.6	36.5	116598
  (3,3)	48.3	-48.1	-4.0	35.5	156978
  (4,4)	47.9	-47.7	-3.8	37.0	17145
  (1,1)	47.5	-47.3	-4.9	30.5	108388
  (3,2)	47.3	-47.0	-5.2	43.0	170484
  (3,4)	47.2	-47.1	3.5	23.0	16306
  (1,2)	46.8	-46.5	-5.9	53.0	173393
  (2,4)	46.6	-46.6	-2.0	26.0	17095
  (2,2)	46.4	-46.1	-5.6	39.0	17121
  (1,4)	46.2	-45.9	5.6	43.5	171510
  (1,3)	45.8	-45.5	5.3	33.0	16737
  (0,4)	45.3	-43.2	13.5	41.0	142016
  (0,2)	45.0	-44.8	-3.8	35.0	102568
  (5,4)	44.9	-44.8	-3.9	37.5	157094
  (5,5)	44.0	-43.1	-8.6	41.0	100042
  (2,3)	43.7	-43.4	4.9	27.7	183577
  (4,5)	43.0	-42.5	-6.4	49.5	124950
  (0,3)	43.0	-42.8	3.8	32.5	109398
  (2,5)	42.8	-42.6	-4.0	41.5	172166
  (1,5)	42.8	-42.6	-3.9	35.0	154387
  (0,5)	42.3	-42.3	-1.2	30.5	98334
  (3,5)	40.4	-39.8	-7.0	47.0	142898

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F187N_o001 visit 1: worst tile 15.1 mas at cell (0,4) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F187N_o001_latest.json

  what is affected, and why

  1/36 cells exceed 15 mas, and every one of them is on the mosaic EDGE — that is usually thin coverage (few exposures, so few pairs per cell) rather than a distortion error. Check the pair counts in the table before treating it as a defect. The bulk tie for this visit is 1.16 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (0,4)	15.1	5.5	14.0	30.0	143551

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F210M visit 1: worst tile 65.3 mas at cell (3,1) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F210M_latest.json

  what is affected, and why

  36/36 cells exceed 15 mas. They are not confined to the edge, so this is an interior residual: a distortion or per-detector alignment problem, not a coverage artefact. The bulk tie for this visit is 49.19 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (3,1)	65.3	-65.2	-4.5	19.0	25763
  (1,0)	62.5	-62.3	4.9	20.0	18164
  (4,0)	55.3	-55.1	4.9	30.0	33802
  (5,0)	53.7	-53.3	5.9	21.0	33631
  (3,0)	53.4	-53.2	4.8	34.0	26976
  (5,2)	53.2	-52.8	-6.2	29.0	28438
  (2,0)	52.9	-52.6	5.4	31.0	23685
  (5,1)	52.5	-52.3	-5.1	31.0	45674
  (4,1)	52.2	-52.0	4.1	28.0	37182
  (4,2)	51.8	-51.3	-6.6	44.0	28277
  (2,1)	51.7	-51.5	4.3	33.0	24103
  (4,3)	51.3	-51.0	-5.2	38.0	27470
  (3,3)	50.7	-50.6	3.2	28.0	22245
  (1,1)	50.3	-50.0	-5.8	24.0	17080
  (0,0)	50.3	-49.9	6.2	20.0	18603
  (5,3)	49.9	-49.5	-6.5	28.0	26548
  (0,1)	49.9	-49.6	5.1	25.0	19301
  (2,3)	49.4	-49.2	5.0	22.0	25127
  (1,2)	48.9	-48.6	-4.8	27.0	24760
  (3,4)	48.8	-48.4	6.5	21.0	24113
  (1,5)	48.2	-48.0	-4.6	26.0	22068
  (0,2)	47.7	-47.5	-3.8	23.0	16690
  (0,3)	47.6	-47.5	3.5	22.0	16210
  (1,3)	47.6	-47.4	4.3	31.0	25062
  (4,4)	47.5	-47.3	-4.3	31.0	25988
  (1,4)	47.5	-47.0	6.7	27.0	22680
  (2,2)	47.0	-46.7	-5.2	29.0	26933
  (3,2)	46.7	-46.5	-4.9	29.0	23852
  (0,4)	46.6	-44.8	13.0	25.7	207426
  (2,4)	46.3	-46.2	2.4	22.0	24901
  (5,4)	44.3	-44.0	-5.3	26.0	23557
  (0,5)	44.2	-43.8	5.6	27.0	168951
  (2,5)	43.0	-42.8	-4.1	23.0	23622
  (4,5)	42.0	-41.1	-8.7	30.0	19519
  (5,5)	41.8	-41.1	-7.9	38.5	177453
  (3,5)	37.4	-36.9	-5.9	29.0	230156

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F212N visit 1: worst tile 57.9 mas at cell (1,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F212N_latest.json

  what is affected, and why

  36/36 cells exceed 15 mas. They are not confined to the edge, so this is an interior residual: a distortion or per-detector alignment problem, not a coverage artefact. The bulk tie for this visit is 48.45 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (1,0)	57.9	-57.7	4.3	58.0	64649
  (4,0)	55.6	-55.3	5.4	43.5	142127
  (3,0)	54.3	-54.0	5.5	45.0	9790
  (5,1)	54.2	-54.0	-4.5	41.0	21264
  (0,0)	54.1	-53.8	6.1	65.0	63136
  (5,2)	53.7	-52.8	-9.6	41.0	130428
  (4,1)	53.0	-52.8	4.5	35.0	16271
  (3,1)	52.7	-52.6	-2.6	32.5	106148
  (2,0)	52.2	-52.0	4.2	83.0	88280
  (5,0)	52.1	-51.9	4.2	33.5	149492
  (4,2)	50.0	-49.5	-7.3	48.5	125015
  (2,1)	49.8	-49.7	3.2	40.0	89917
  (1,1)	48.0	-47.7	-5.5	61.0	65136
  (4,3)	47.6	-45.6	-13.6	55.5	126322
  (0,1)	47.4	-47.3	3.1	71.0	70976
  (3,2)	47.0	-46.7	-5.6	41.5	97435
  (1,2)	46.5	-45.8	-8.4	53.0	100573
  (1,5)	44.7	-44.6	-2.9	63.0	87287
  (5,3)	44.5	-37.1	-24.5	60.5	118994
  (0,5)	44.1	-44.1	-0.9	54.0	56167
  (2,5)	44.0	-43.9	-2.9	39.5	95551
  (0,2)	43.8	-43.5	-5.1	72.0	58807
  (5,5)	43.6	-42.6	-9.3	86.0	50872
  (5,4)	42.6	-40.7	-12.8	44.0	95483
  (4,5)	42.4	-41.8	-7.1	97.0	65626
  (2,2)	41.8	-41.4	-5.7	48.0	113038
  (3,3)	41.5	-39.1	-13.8	51.0	92010
  (3,4)	40.8	-39.9	-8.5	45.0	110541
  (0,3)	40.7	-13.9	-38.2	107.0	71139
  (1,3)	40.6	-17.8	-36.5	63.0	129057
  (3,5)	40.5	-40.0	-6.5	92.0	78177
  (4,4)	40.4	-40.0	-5.5	47.5	114605
  (1,4)	39.6	-34.3	-19.9	48.0	114573
  (2,4)	38.8	-35.2	-16.2	51.0	119570
  (2,3)	38.6	-23.6	-30.5	52.0	123176
  (0,4)	32.4	-30.9	-9.9	35.5	95635

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F300M visit 1: worst tile 131.0 mas at cell (5,5) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F300M_latest.json

  what is affected, and why

  36/36 cells exceed 15 mas. They are not confined to the edge, so this is an interior residual: a distortion or per-detector alignment problem, not a coverage artefact. The bulk tie for this visit is 127.96 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (5,5)	131.0	17.4	-129.9	55.0	52553
  (4,5)	129.9	18.4	-128.6	74.0	65658
  (5,3)	129.5	13.0	-128.8	57.0	82897
  (3,5)	128.6	21.2	-126.9	84.0	70254
  (4,3)	127.6	9.6	-127.3	64.0	87144
  (5,4)	126.7	17.2	-125.5	69.0	78124
  (2,3)	126.1	20.7	-124.4	80.0	81875
  (3,3)	126.0	13.2	-125.3	78.0	78385
  (2,5)	124.2	17.6	-123.0	88.0	76286
  (1,3)	123.4	16.4	-122.4	85.0	87830
  (0,3)	123.2	16.0	-122.2	75.0	58795
  (1,5)	122.9	15.6	-121.9	68.0	72568
  (2,4)	122.2	14.3	-121.4	34.5	88493
  (4,4)	122.1	15.6	-121.1	48.5	89501
  (1,4)	120.9	15.7	-119.9	70.0	77186
  (0,5)	120.8	14.7	-119.9	64.0	46615
  (3,4)	119.3	14.4	-118.4	36.5	93250
  (0,4)	113.7	15.4	-112.7	78.0	60206
  (1,0)	58.7	-58.6	2.8	49.0	50972
  (4,0)	56.2	-55.9	-5.8	75.0	83484
  (3,0)	56.0	-55.7	-5.8	76.0	73273
  (0,0)	55.3	-55.2	-4.0	53.0	46419
  (5,0)	53.9	-53.3	-7.9	66.0	72299
  (2,0)	53.4	-53.2	-4.2	63.0	69641
  (0,1)	50.6	-50.3	5.3	65.0	55621
  (5,1)	50.6	-49.8	-9.0	56.5	99570
  (3,1)	50.2	-49.6	-7.7	73.0	70888
  (4,1)	49.8	-49.4	-6.6	41.5	96838
  (2,1)	48.5	-48.2	-5.0	71.0	74257
  (1,1)	46.6	-46.3	-5.1	60.0	56499
  (4,2)	44.5	-43.2	-11.0	102.0	72939
  (5,2)	44.1	-42.6	-11.4	88.0	71453
  (0,2)	43.8	-43.7	1.9	55.0	44335
  (1,2)	41.9	-41.7	-4.2	76.0	66934
  (3,2)	40.9	-40.5	-6.2	74.0	61174
  (2,2)	38.3	-37.7	-6.8	82.0	66987

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F300M_o001 visit 1: worst tile 16.7 mas at cell (1,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F300M_o001_latest.json

  what is affected, and why

  2/36 cells exceed 15 mas, and every one of them is on the mosaic EDGE — that is usually thin coverage (few exposures, so few pairs per cell) rather than a distortion error. Check the pair counts in the table before treating it as a defect. The bulk tie for this visit is 1.03 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (1,0)	16.7	-15.7	5.9	64.0	50860
  (0,0)	16.1	-15.4	4.5	57.0	46138

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F360M_o001 visit 1: worst tile 18.2 mas at cell (0,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F360M_o001_latest.json

  what is affected, and why

  3/36 cells exceed 15 mas, and every one of them is on the mosaic EDGE — that is usually thin coverage (few exposures, so few pairs per cell) rather than a distortion error. Check the pair counts in the table before treating it as a defect. The bulk tie for this visit is 0.80 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (0,0)	18.2	-17.4	5.3	46.0	47310
  (1,0)	17.0	-16.2	4.9	51.0	50242
  (3,5)	15.1	13.9	-5.7	63.0	61532

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F405N visit 1: worst tile 58.9 mas at cell (1,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F405N_latest.json

  what is affected, and why

  36/36 cells exceed 15 mas. They are not confined to the edge, so this is an interior residual: a distortion or per-detector alignment problem, not a coverage artefact. The bulk tie for this visit is 48.01 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (1,0)	58.9	-58.8	4.1	41.0	36018
  (0,0)	58.2	-57.9	5.8	41.0	34811
  (3,0)	56.0	-55.9	2.1	53.0	61281
  (4,0)	55.7	-55.6	-3.0	53.0	72066
  (4,1)	53.4	-53.1	5.1	67.0	71285
  (5,1)	53.2	-52.9	-5.7	80.0	68767
  (5,0)	52.4	-51.6	-8.8	44.0	52112
  (0,1)	51.9	-50.8	10.6	58.0	47236
  (3,1)	51.6	-51.5	2.3	56.0	59239
  (2,0)	51.6	-51.4	3.4	58.0	44154
  (2,1)	51.1	-50.9	4.6	62.0	61118
  (4,3)	49.2	-48.9	-5.5	85.0	59152
  (1,2)	48.1	-47.9	4.5	62.0	53157
  (3,3)	48.0	-47.9	-3.7	76.0	42428
  (5,2)	47.9	-47.4	-7.1	65.0	47672
  (4,2)	47.5	-46.8	-7.7	67.0	55308
  (5,3)	47.3	-46.5	-8.4	88.0	60367
  (1,1)	46.9	-46.5	6.2	47.0	44070
  (1,5)	46.2	-46.2	2.1	60.0	56432
  (3,2)	45.3	-45.2	2.2	46.0	55241
  (1,4)	45.0	-44.7	4.9	73.0	58360
  (0,2)	44.4	-43.6	8.5	58.0	41532
  (1,3)	44.3	-44.2	-1.9	67.0	64076
  (3,4)	44.1	-43.7	5.5	66.0	55970
  (0,5)	43.7	-43.5	4.7	56.0	36780
  (2,4)	43.7	-43.6	3.0	76.0	65227
  (0,4)	43.2	-42.1	10.0	81.0	48185
  (2,2)	42.9	-42.7	3.7	58.0	58371
  (4,4)	42.5	-42.4	2.0	73.0	53920
  (2,3)	42.4	-42.3	-2.8	73.0	56179
  (5,4)	42.3	-42.1	-4.7	72.0	46344
  (2,5)	42.0	-41.9	1.1	75.0	56922
  (5,5)	41.7	-40.9	-8.5	80.0	37023
  (0,3)	40.6	-40.5	-2.5	62.0	42550
  (4,5)	40.0	-39.5	-6.3	89.0	51433
  (3,5)	38.8	-38.5	-4.8	76.0	53863

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F405N_o001 visit 1: worst tile 17.4 mas at cell (0,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F405N_o001_latest.json

  what is affected, and why

  4/36 cells exceed 15 mas, and every one of them is on the mosaic EDGE — that is usually thin coverage (few exposures, so few pairs per cell) rather than a distortion error. Check the pair counts in the table before treating it as a defect. The bulk tie for this visit is 0.87 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (0,0)	17.4	-16.8	4.5	43.0	33615
  (1,0)	16.2	-15.5	4.7	54.0	33986
  (5,1)	15.4	-13.9	-6.5	76.0	68465
  (4,0)	15.4	-15.1	-3.1	57.0	69759

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F410M visit 1: worst tile 60.2 mas at cell (1,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F410M_latest.json

  what is affected, and why

  36/36 cells exceed 15 mas. They are not confined to the edge, so this is an interior residual: a distortion or per-detector alignment problem, not a coverage artefact. The bulk tie for this visit is 48.53 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (1,0)	60.2	-60.0	4.3	38.0	53044
  (0,0)	56.9	-56.4	7.6	44.0	47254
  (4,0)	56.6	-56.5	-3.3	29.0	90421
  (3,0)	56.1	-55.9	-4.3	54.0	78376
  (5,1)	53.5	-53.2	-5.9	40.0	97762
  (4,1)	53.1	-52.9	4.0	31.0	97623
  (3,1)	52.7	-52.4	-5.5	52.0	75700
  (2,1)	51.1	-51.0	3.5	61.0	78568
  (5,0)	51.0	-50.7	-5.5	46.0	72568
  (2,0)	50.9	-50.8	2.8	52.0	67551
  (0,1)	50.8	-50.0	9.1	56.0	62341
  (5,2)	49.3	-48.8	-6.8	60.0	62278
  (4,3)	48.5	-48.1	-6.3	77.0	73639
  (1,2)	47.9	-47.7	3.9	67.0	67618
  (3,3)	47.0	-46.7	-5.0	74.0	58402
  (1,1)	46.5	-46.3	4.1	45.0	58621
  (4,2)	46.5	-45.9	-7.4	69.0	73168
  (0,2)	46.2	-45.5	8.0	55.0	48787
  (5,3)	45.9	-44.9	-9.7	84.0	71901
  (3,4)	44.8	-44.3	6.5	59.0	72808
  (4,4)	44.1	-44.0	3.8	72.0	67164
  (1,3)	44.1	-44.0	-2.5	66.0	77560
  (2,2)	44.0	-43.9	-3.2	55.0	70979
  (2,4)	43.9	-43.7	4.3	63.0	76520
  (1,4)	43.9	-43.5	5.3	66.0	68931
  (0,4)	43.6	-42.4	10.3	74.0	53238
  (1,5)	43.6	-43.5	-3.3	57.0	67022
  (3,2)	43.3	-43.3	1.5	47.0	65469
  (5,4)	42.3	-42.0	-4.8	66.0	60834
  (2,3)	42.2	-42.1	-2.9	67.0	68039
  (5,5)	41.7	-41.2	-6.9	72.0	45003
  (0,5)	41.7	-41.4	4.9	45.0	44447
  (0,3)	41.5	-41.3	-4.0	58.0	50852
  (4,5)	40.7	-40.2	-6.6	85.0	62924
  (2,5)	40.2	-40.2	1.6	68.0	65970
  (3,5)	37.4	-37.1	-5.2	70.0	64817

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F410M_o001 visit 1: worst tile 18.3 mas at cell (0,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F410M_o001_latest.json

  what is affected, and why

  4/36 cells exceed 15 mas, and every one of them is on the mosaic EDGE — that is usually thin coverage (few exposures, so few pairs per cell) rather than a distortion error. Check the pair counts in the table before treating it as a defect. The bulk tie for this visit is 1.06 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (0,0)	18.3	-16.8	7.2	47.0	45634
  (1,0)	17.3	-16.4	5.5	52.0	51705
  (3,0)	15.7	-14.8	-5.0	57.0	77824
  (5,1)	15.3	-14.0	-6.2	39.0	97769

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F466N visit 1: worst tile 60.5 mas at cell (1,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F466N_latest.json

  what is affected, and why

  36/36 cells exceed 15 mas. They are not confined to the edge, so this is an interior residual: a distortion or per-detector alignment problem, not a coverage artefact. The bulk tie for this visit is 48.21 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (1,0)	60.5	-60.2	6.6	43.0	21560
  (3,0)	58.9	-58.9	1.5	62.0	39086
  (4,0)	58.6	-58.5	-3.8	57.0	46253
  (0,0)	58.0	-57.7	6.5	52.0	23860
  (5,0)	54.9	-54.4	-7.2	56.0	44537
  (2,0)	53.9	-53.8	3.3	63.0	31584
  (5,1)	53.3	-53.0	-6.0	92.0	67354
  (3,1)	53.2	-53.0	-4.0	56.0	33204
  (2,1)	52.6	-52.4	4.5	67.0	33667
  (4,1)	52.2	-52.1	-3.1	70.0	52563
  (0,1)	52.0	-51.5	7.3	63.0	27907
  (5,2)	52.0	-51.3	-8.3	77.0	36407
  (4,3)	50.0	-49.7	-5.8	85.0	37748
  (1,1)	49.6	-49.5	3.3	50.0	24649
  (4,2)	49.2	-48.8	-6.8	92.0	38657
  (1,2)	48.0	-47.8	3.8	71.0	33773
  (5,3)	47.7	-46.9	-8.4	92.0	36144
  (3,3)	47.1	-46.9	-4.3	78.0	27239
  (0,2)	46.0	-45.6	6.1	71.0	23435
  (1,5)	45.6	-45.5	2.6	64.0	27903
  (3,2)	44.8	-44.7	-2.8	60.0	31222
  (1,4)	44.8	-44.5	5.0	70.0	32925
  (2,4)	44.5	-44.4	2.6	70.0	38047
  (3,4)	43.9	-43.7	4.1	64.0	36909
  (2,2)	43.0	-43.0	1.4	65.0	31242
  (1,3)	42.9	-42.9	1.7	68.0	34588
  (0,4)	42.4	-41.4	9.3	80.0	28465
  (0,5)	42.4	-42.1	4.4	52.0	19615
  (2,5)	42.1	-42.0	-2.8	79.0	31346
  (4,4)	41.7	-41.7	2.4	74.0	35183
  (5,4)	41.5	-41.2	-4.7	75.0	30773
  (2,3)	41.3	-41.2	-2.0	70.0	33064
  (5,5)	41.2	-40.2	-8.7	81.0	20958
  (0,3)	40.3	-40.2	-2.7	64.0	20736
  (4,5)	40.2	-39.7	-6.5	93.0	26331
  (3,5)	38.4	-38.1	-4.8	78.0	26453

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F466N_o001 visit 1: worst tile 17.6 mas at cell (1,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F466N_o001_latest.json

  what is affected, and why

  4/36 cells exceed 15 mas, and every one of them is on the mosaic EDGE — that is usually thin coverage (few exposures, so few pairs per cell) rather than a distortion error. Check the pair counts in the table before treating it as a defect. The bulk tie for this visit is 0.54 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (1,0)	17.6	-16.3	6.7	59.0	21854
  (0,0)	16.6	-15.3	6.5	57.0	23661
  (4,0)	15.8	-15.4	-3.6	64.0	46145
  (3,0)	15.6	-15.4	2.3	69.0	39350

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F480M visit 1: worst tile 60.7 mas at cell (1,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F480M_latest.json

  what is affected, and why

  36/36 cells exceed 15 mas. They are not confined to the edge, so this is an interior residual: a distortion or per-detector alignment problem, not a coverage artefact. The bulk tie for this visit is 48.45 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (1,0)	60.7	-60.5	5.0	47.0	47445
  (0,0)	59.8	-59.4	6.8	52.0	48141
  (3,0)	58.0	-58.0	1.9	60.0	75812
  (4,0)	57.6	-57.4	-3.6	63.0	88597
  (5,1)	54.8	-54.4	-6.6	46.0	106129
  (5,0)	54.2	-53.6	-7.9	66.0	76964
  (2,0)	53.7	-53.6	3.8	63.0	66113
  (3,1)	52.8	-52.8	0.9	58.0	72933
  (0,1)	52.0	-51.6	6.5	65.0	60649
  (2,1)	51.9	-51.9	-1.3	68.0	76030
  (4,1)	51.6	-51.4	-3.9	35.5	95474
  (5,2)	50.7	-49.8	-9.7	84.0	64622
  (1,1)	49.7	-49.6	3.7	53.0	55499
  (4,2)	48.5	-47.9	-7.3	89.0	71665
  (4,3)	48.5	-48.2	-5.0	78.0	73958
  (1,2)	47.8	-47.7	3.5	72.0	66990
  (5,3)	46.3	-45.7	-7.1	87.0	71496
  (3,3)	46.2	-46.1	-3.9	71.0	53556
  (1,5)	46.0	-45.9	3.7	61.0	66719
  (0,2)	45.8	-45.5	5.4	66.0	51194
  (1,4)	45.0	-44.6	5.5	72.0	70699
  (2,4)	44.2	-44.1	3.5	73.0	75184
  (3,2)	44.2	-44.1	-2.6	64.0	64046
  (1,3)	44.1	-44.0	-1.9	68.0	76219
  (3,4)	43.8	-43.5	5.2	65.0	70557
  (2,3)	43.6	-43.4	3.1	68.0	61573
  (0,4)	43.2	-42.1	9.8	79.0	52518
  (2,2)	42.6	-42.5	-2.6	69.0	69347
  (4,4)	42.3	-42.1	3.9	78.0	64346
  (2,5)	41.7	-41.6	2.3	77.0	65632
  (0,3)	41.6	-41.4	-3.8	59.0	50941
  (0,5)	41.5	-41.1	5.9	49.0	45974
  (5,4)	41.4	-41.2	-4.6	74.0	62173
  (5,5)	40.7	-39.9	-8.2	75.0	44355
  (4,5)	39.7	-39.3	-5.8	90.0	62160
  (3,5)	37.9	-37.6	-4.5	73.0	63360

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• warn
  F480M_o001 visit 1: worst tile 17.3 mas at cell (0,0) (> 15 mas)

  36/36 tiles are reported "ok", but that counts tiles whose offset histogram had a coherent PEAK — not tiles within tolerance. The m7 cross-band gate is no significant 2" cell above 15 mas, and this cell exceeds it, so the bulk tie being ~0 does not mean the field is flat.

  checkpoint_m2_F480M_o001_latest.json

  what is affected, and why

  3/36 cells exceed 15 mas, and every one of them is on the mosaic EDGE — that is usually thin coverage (few exposures, so few pairs per cell) rather than a distortion error. Check the pair counts in the table before treating it as a defect. The bulk tie for this visit is 0.72 mas — a small bulk value cannot cancel a local one.

  Diagnostic writeupD3 — absolute tie to the reference frame · full diagnostic writeup (PDF)

  cell	off (mas)	dRA	dDec	contrast	pairs
  (0,0)	17.3	-16.0	6.7	55.0	46826
  (1,0)	16.7	-15.9	5.3	60.0	46685
  (3,0)	15.0	-14.9	1.9	66.0	74390

  Existing figures

  • astrometry_offsets_2026-07-10.png audit_plots
  • SgrB2_RGB_128-770-480.png pngs
  • SgrB2_RGB_1280-770-480.jpg pngs
  • SgrB2_RGB_1280-770-480.png pngs
• ok
  F300M_o001: all 48 exposures within 2.0 mas of consensus

  checkpoint_m2_F300M_o001_latest.json
• ok
  F360M_o001: all 48 exposures within 2.0 mas of consensus

  checkpoint_m2_F360M_o001_latest.json
• ok
  F410M_o001: all 48 exposures within 2.0 mas of consensus

  checkpoint_m2_F410M_o001_latest.json
• ok
  F480M_o001: all 48 exposures within 2.0 mas of consensus

  checkpoint_m2_F480M_o001_latest.json
• ok
  m7 present (2 file(s))

  catalogs/
• ok
  m8 cross-band product absent

  catalogs/basic_*_photometry_tables_merged_*.fits
• ok
  36 job(s) in the queue (11 running)

  sgrb25365-o001-m5-fanout, sgrb25365-o001-m5-finalize-F150W, sgrb25365-o001-m5-finalize-F182M, sgrb25365-o001-m5-finalize-F187N, sgrb25365-o001-m5-finalize-F210M, sgrb25365-o001-m5-finalize-F212N, sgrb25365-o001-m5-finalize-F300M, sgrb25365-o001-m5-finalize-F360M, sgrb25365-o001-m5-finalize-F405N, sgrb25365-o001-m5-finalize-F410M, sgrb25365-o001-m5-finalize-F466N, sgrb25365-o001-m5-finalize-F480M,

  squeue