MTA Monitoring Report 10/17/25 - 10/23/25

Archive of all weekly reports
Archive of monthly reports

Although we prefer to quote CTI values of the cleanest data (FT <= -119.7 C, int time > 7000sec), the data that fulfills these conditions are getting rare. We now quote CTI based on temperature corrected data for Focal plane temperature <= -118.5 C).

The unit is now CTI/year not CTI/day.

Average of ACIS-I CCDs (MnKa) slope:	5.214e-02 CTI/year	(1.428e-04 CTI/day)
Detrended slope:	4.865e-02 CTI/year	(1.333e-04 CTI/day)

ACIS Warm Pixels

We display all bad pixels that have showed up in past, and, if any, previously unknown bad pixels appeared in the last 14 days. We also list hot pixels (defined as 1000 above the average of bias background). Warm columns 509-514 are probably due to boundaries.

New definitions of warm pixels and flickering pixels (May 15, 2014). If a pixel displays the level beyond a threshold for more than 70% of the time in the past two weeks, the pixel is categorized as a "warm" pixel. If a pixel is above the threshold more than 30% of time but less than 70% of the time in the past two weeks, the pixel is categorized as a "flickering" pixel.

	CCD0	CCD1	CCD2	CCD3	CCD4	CCD5	CCD6	CCD7	CCD8	CCD9
Previously Unknown Bad Pixels					(229,71)
Current Warm Pixels	(786,117)	(802,665) (985,393) (910,239)	(803,225) (99,899) (837,378) (178,149) (526,66)	(21,95)			(849,169) (670,387) (287,164)	(335,412)	(139,109) (275,393) (881,53) (136,65) (597,187)
Flickering Warm Pixels		(90,859) (370,70) (787,181) (427,125)	(104,31) (665,25) (726,537)	(811,637) (617,159) (680,391) (318,53) (394,80)	(363,19) (879,121) (791,366) (758,244)	(233,227) (263,317) (641,669) (367,511) (369,376) (357,303) (161,206) (282,385) (728,340) (669,577)	(1000,214)		(333,466) (220,813) (447,769) (541,41) (675,304) (332,324) (182,474) (838,239) (295,978) (893,490) (666,165)	(40,49) (749,477) (675,52) (951,382)
Current Hot Pixels
Flickering Hot Pixels
Warm column candidates						512 510 1022		512 1022
Flickering Warm column candidates

ACIS Focal Plane Temperature

For this period, 4 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
289.31	-104.95	2.08
290.99	-103.37	1.67
291.99	-109.53	0.49
293.77	-103.01	2.63

Weekly focal plane temperature with sun angle, earth angle, and altitude overplotted. Sun angle is the solar array angle, that is the angle between the sun and the optical axis (+X axis). The earth angle is the angle between earth and the ACIS radiator (+Z axis). Altitude varies from 34 kkm to 128 kkm.

SIM Movements

8 TSC moves this period

weekly average time/step	0.00135 s
mission average time/step	0.00132 s

Telemetry

New violations or new extrema are shown in blue cells.

MSID	10/17/25	10/18/25	10/19/25	10/20/25	10/21/25	10/22/25	10/23/25	yellow limits (lower) upper	red limits (lower) upper	Units	Description
AWD1TQI							(-3.31)	(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 1 TORQUE CURRENT
AWD6TQI				(-3.43)			(-3.43)	(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 6 TORQUE CURRENT
CTXBPWR				(0.00)		(0.00)		(36.12) 37.0	(36.0) 38.0	DBM	TRANSMITTER B OUTPUT POWER
MZOBACONE		308.20	311.75	310.10	308.73	309.62	309.80	(260.2) 303.0	(250.2) 308.0	CONE	-Z SIDE OBA CONE
OBAAVG		301.23	304.50	303.46		301.31	301.69	(282.5) 300.0	(281.4) 301.0	K	OBA/TFTE TEMP
OBACONEAVG				308.56		306.60	306.90	(282.5) 300.0	(281.8) 301.0	K	OBA CONE AVG TEMP
OBADIAGRAD		3.93	4.88	4.22	4.92	4.58	4.91	(-1.11) 3.5	(-2.78) 3.9	K	OBA DIAM GRAD
PZOBACONE			308.81					(260.2) 303.0	(250.2) 308.0	CONE	+Z SIDE OBA CONE
TCM_TX1	(268.43)							(283.15) 348.15	(269.15) 404.15	K	TRANSPONDER-1 EXT BPL TEMP
TFTERANGE				48.34	46.57	48.25	48.36	(16.7) 37.5	(11.1) 45.0	K	TFTE VENT/RAD TEMP
TSCTSF3			(268.06)		(268.06)	(268.79)		(278.15) 359.15	(269.15) 483.15	K	SC-TS FITTING -3 TEMP

IRUs

Gyro Bias Drift	Gyro Bias Drift Histogram

Recent Observations

OBSID	DETECTOR	GRATING	TARGET	ANALYSIS	ACA
31919	ACIS-67	NONE	MRCB1737-609	OK	OK
31447	ACIS-67	NONE	PGC3320749	OK	OK
30184	ACIS-3678	NONE	IC5273	OK	OK
29672	ACIS-3678	NONE	NGC7456	OK	OK
31920	ACIS-0123	NONE	HEP G045.030+01.438	OK	OK
30517	ACIS-456789	HETG	WR 11	OK/NA	OK
31921	ACIS-0123	NONE	MACS J0018.5+1626	OK	OK
31104	ACIS-23678	NONE	MAXI J1820+070	OK	OK
30088	ACIS-56789	HETG	TV Cassiopeia	OK/NA	OK
30233	ACIS-0123	NONE	[vD2023]1	OK	OK
30533	ACIS-67	HETG	Cygnus X-2	OK/NA	OK
31931	ACIS-0123	NONE	[vD2023]1	OK	OK
31925	ACIS-0123	NONE	ESO 567- G 048	OK	OK
30236	ACIS-0123	NONE	[vD2023]1	OK	OK
30236	ACIS-0123	NONE	[vD2023]1	OK	OK
29648	ACIS-3678	NONE	NGC3137	OK	OK
30518	ACIS-456789	HETG	WR 11	OK/NA	OK
31951	ACIS-67	NONE	GRB251016A	OK	OK
31933	ACIS-0123	NONE	[vD2023]1	OK	OK
31928	ACIS-3678	NONE	NGC3137	OK	OK
31926	ACIS-67	NONE	V* CE Ant	OK	OK
31953	ACIS-67	NONE	GRB251016A	OK	OK
31683	ACIS-0123	NONE	SDSS J014837.63+060020.0	OK	OK
31934	ACIS-0123	NONE	[vD2023]1	OK	OK
30147	ACIS-3678	NONE	NGC1546	OK	OK
31937	ACIS-0123	NONE	SDSS J014837.63+060020.0	OK	OK
30519	ACIS-456789	HETG	WR 11	OK/NA	OK

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
oobthr02	0.380	0.033	(2.87+/-0.23)e2	0.06 +/- 0.03	K	RT 25: HRMA STRUT
oobthr03	0.598	0.023	(2.91+/-0.16)e2	0.07 +/- 0.03	K	RT 26: HRMA STRUT
oobthr04	0.748	0.023	(2.94+/-0.17)e2	0.08 +/- 0.04	K	RT 27: HRMA STRUT
oobthr05	0.736	0.031	(2.94+/-0.22)e2	0.09 +/- 0.04	K	RT 28: HRMA STRUT
oobthr06	0.606	0.025	(2.91+/-0.18)e2	0.08 +/- 0.03	K	RT 29: HRMA STRUT
oobthr07	0.399	0.023	(2.87+/-0.16)e2	0.06 +/- 0.03	K	RT 30: HRMA STRUT
oobthr08	0.995	0.003	(2.93+/-0.07)e2	0.14 +/- 0.05	K	RT 31: OBA CONE
oobthr09	0.690	0.159	(2.93+/-1.10)e2	0.13 +/- 0.05	K	RT 32: OBA CONE
oobthr10	0.718	0.104	(2.92+/-0.73)e2	0.13 +/- 0.05	K	RT 33: OBA CONE
oobthr11	0.887	0.003	(2.91+/-0.07)e2	0.13 +/- 0.05	K	RT 34: OBA CONE
oobthr12	0.876	0.003	(2.91+/-0.07)e2	0.14 +/- 0.05	K	RT 35: OBA CONE
oobthr13	-4.743	3.219	(3.12+/-22.33)e2	0.14 +/- 0.05	K	RT 36: OBA CONE
oobthr14	-1.617	1.454	(3.01+/-10.08)e2	0.14 +/- 0.05	K	RT 37: OBA CONE
oobthr15	0.896	0.003	(2.91+/-0.07)e2	0.14 +/- 0.05	K	RT 38: OBA CONE

HRMA Heaters

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
ohrthr02	-0.003	0.001	(2.95+/-0.01)e2	(2.20+/-0.96)e-4	K	RT 2: HRMA FORWARD APERTURE PLATE
ohrthr03	7.855e-04	5.670e-05	(2.95+/-0.00)e2	-(9.26+/-6.96)e-4	K	RT 5: HRMA FORWARD APERTURE PLATE
ohrthr04	-0.005	0.003	(2.95+/-0.02)e2	(3.39+/-6.10)e-5	K	RT 9: HRMA PRECOLLIMATOR PLATE 10
ohrthr05	0.089	9.100e-04	(2.95+/-0.01)e2	0.04 +/- 0.01	K	RT 13: HRMA AFT HEATER PLATE
ohrthr06	0.069	6.025e-04	(2.95+/-0.01)e2	0.03 +/- 0.01	K	RT 14: HRMA MOUNT
ohrthr07	0.077	5.946e-04	(2.95+/-0.01)e2	0.03 +/- 0.01	K	RT 18: HSA OUTER CYLINDER
ohrthr08	0.071	5.783e-04	(2.94+/-0.01)e2	0.03 +/- 0.01	K	RT 103: HRMA CAP
ohrthr09	0.069	5.449e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 105: HRMA CAP
ohrthr10	0.064	4.870e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 107: HRMA P1 FLEXURE
ohrthr11	0.061	4.803e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 108: HRMA P4 FLEXURE
ohrthr12	0.078	6.284e-04	(2.95+/-0.01)e2	0.03 +/- 0.01	K	RT 115: HRMA H1 FLEXURE
ohrthr13	0.076	6.031e-04	(2.95+/-0.01)e2	0.03 +/- 0.01	K	RT 116: HRMA H6 FLEXURE
ohrthr14	0.110	7.496e-04	(2.95+/-0.01)e2	0.03 +/- 0.01	K	RT 121: HSA AFT INNER CYLINDER

If you have any questions, please contact: swolk@head.cfa.harvard.edu

MTA Monitoring Report 10/17/25 - 10/23/25

Radiation

Detrended CTI

ACIS Warm Pixels

ACIS Focal Plane Temperature

SIM Movements

Telemetry

IRUs

Recent Observations

Trending

OBA Heaters

HRMA Heaters