MTA Monitoring Report 12/26/25 - 01/01/26

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	CCD5	CCD6	CCD7	CCD8	CCD9
Previously Unknown Bad Pixels
Current Warm Pixels		(985,393) (910,239)	(837,378) (178,149) (526,66) (803,225)	(21,95)	(357,303) (369,376) (282,385) (263,317)	(670,387) (1000,214) (849,169)	(335,412)
Flickering Warm Pixels	(171,937) (786,117) (283,278)	(802,665) (427,125) (370,70)	(665,25) (99,899) (104,31) (726,537)	(811,637) (617,159) (680,391) (318,53) (394,80)	(728,340) (258,797) (233,102) (161,206) (877,408) (270,726) (641,669) (554,484) (233,227) (233,81) (669,577) (166,738) (367,511)	(884,31)	(126,856)	(333,466) (675,304) (666,165) (34,645) (597,187) (102,139) (881,53) (136,65) (139,109) (295,978) (332,324) (182,474) (541,41) (447,769) (234,69) (178,399) (198,699) (838,239) (893,490) (275,393)	(675,52) (40,49) (749,477)
Current Hot Pixels
Flickering Hot Pixels
Warm column candidates					1022 510 512		1022 512
Flickering Warm column candidates

ACIS Focal Plane Temperature

For this period, 2 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
359.94	-105.95	5.04
364.78	-106.20	2.05

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

7 TSC moves this period

weekly average time/step	0.00136 s
mission average time/step	0.00132 s

Telemetry

New violations or new extrema are shown in blue cells.

MSID	12/26/25	12/27/25	12/28/25	12/29/25	12/30/25	12/31/25	01/01/26	yellow limits (lower) upper	red limits (lower) upper	Units	Description
AFTBLKHDT		308.32		310.51	310.47	309.45	310.17	(260.2) 303.0	(250.2) 308.0	TEMP	AFT BULKHEAD TEMP
AWD1TQI					(-3.39)			(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 1 TORQUE CURRENT
AWD6TQI			(-3.43)		(-3.47)	(-3.43)		(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 6 TORQUE CURRENT
CTXBPWR	(0.00)	(0.00)	(0.00)			(0.00)		(36.12) 37.0	(36.0) 38.0	DBM	TRANSMITTER B OUTPUT POWER
FAMTRTEMP							292.65	(260.0) 289.0	(255.0) 292.0	K	FA Motor Temperature
HRMAAVG		(304.17)				(304.43)	(304.89)	(306.0) 308.0	(305.0) 309.0	K	AVG OF HRMA METRICS
MZOBACONE		315.28	312.14	316.54			316.32	(260.2) 303.0	(250.2) 308.0	CONE	-Z SIDE OBA CONE
OBAAVG		306.72	303.45	307.19			307.30	(282.5) 300.0	(281.4) 301.0	K	OBA/TFTE TEMP
OBADIAGRAD	4.77	4.69	5.04	4.85	4.77	4.80	4.90	(-1.11) 3.5	(-2.78) 3.9	K	OBA DIAM GRAD
PZOBACONE	310.43	311.49		312.34	312.43	311.73	312.35	(260.2) 303.0	(250.2) 308.0	CONE	+Z SIDE OBA CONE
TCYZ_RW6							(274.25)	(288.15) 363.15	(278.15) 404.15	K	RWA -6 TEMP (RWA CRNR COMP)
TFTERANGE	48.93	49.48	46.15		47.91	48.65	47.73	(16.7) 37.5	(11.1) 45.0	K	TFTE VENT/RAD TEMP

IRUs

Gyro Bias Drift	Gyro Bias Drift Histogram

Recent Observations

OBSID	DETECTOR	GRATING	TARGET	ANALYSIS	ACA
32063	ACIS-67	NONE	PSRB0656p14_s2	OK	OK
30499	ACIS-5678	HETG	Vela X-1	OK/NA	OK
31488	ACIS-456789	HETG	NGC 4579	OK/NA	OK
32071	ACIS-67	NONE	NGC5728	OK	OK
32065	ACIS-0123	NONE	UGC 03475	OK	OK
31730	ACIS-56789	LETG	MKN421	OK/NA	OK
32067	ACIS-56789	HETG	TV Cassiopeia	OK/NA	OK
32064	ACIS-678	NONE	B2.1 2156+29	OK	OK
32066	ACIS-0123	NONE	CLJ222321.8-522749	OK	OK
32074	ACIS-67	NONE	IC 443	OK	OK
30108	ACIS-0123	NONE	PSR J1101-6101	OK	OK
32069	ACIS-0123	NONE	PSR J1101-6101	OK	OK
32068	ACIS-0123	NONE	PSR J1101-6101	OK	OK
31322	ACIS-67	NONE	ACT-CLJ0808.7+1420	OK	OK
30000	ACIS-678	NONE	4C +05.57	OK	OK
29660	ACIS-3678	NONE	NGC4571	OK	OK
31265	ACIS-67	NONE	SDSS J080010.70+312457.0	OK	OK
31297	ACIS-67	NONE	SDSS J074932.95+283406.6	OK	OK
32083	ACIS-678	NONE	4C +05.57	OK	OK
32084	ACIS-678	NONE	4C +05.57	OK	OK
30426	ACIS-0123	NONE	Abell 2255	OK	OK
30291	ACIS-0123	NONE	Perseus cluster	OK	OK
31287	ACIS-67	NONE	UGC 04040	OK	OK
32088	ACIS-0123	NONE	Abell 2255	OK	OK
31587	ACIS-0123	NONE	sn1006 NE	OK	OK
32076	ACIS-678	NONE	B2.4 0628+21B	OK	OK
29999	ACIS-3678	NONE	2MASX J01110461-4558435	OK	OK
30403	ACIS-3567	NONE	ClG J0242-2132	OK	OK
31732	ACIS-567	LETG	MKN421	OK/NA	OK

MSID		Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
eb1v	off	-0.021	1.330e-04	32.44 +/- 0.20	-0.00 +/- 0.00	V	BATT 1 VOLTAGE
	on	-0.048	0.007	32.20 +/- 0.68	0.01 +/- 0.00	V	BATT 1 VOLTAGE
eb2ci	off	-0.004	7.631e-05	0.33 +/- 0.07	-(8.56+/-12.07)e-4	AMP	BATT 2 CHARGE CURRENT
	on	0.008	0.005	0.44 +/- 0.30	-0.00 +/- 0.00	AMP	BATT 2 CHARGE CURRENT
eb2v	off	-0.019	1.386e-04	32.44 +/- 0.19	-0.00 +/- 0.00	V	BATT 2 VOLTAGE
	on	-0.049	0.009	32.17 +/- 0.68	0.01 +/- 0.00	V	BATT 2 VOLTAGE
ecnv3v		-0.002	1.679e-05	15.30 +/- 0.02	-(9.59+/-6.14)e-5	V	CONV 3 +15V OUTPUT
eepa5v		-1.219e-04	1.935e-04	5.24 +/- 0.16	(3.66+/-0.23)e-10	V	+5V RCTU_EP A

S/C Main Temperatures

MSID		Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
tape2pst		0.611	0.002	(2.91+/-0.05)e2	0.04 +/- 0.04	K	PEA-2 POWER SUPPLY TEMP
tapea1t		0.542	0.002	(3.02+/-0.05)e2	0.04 +/- 0.04	K	PEA-1 CASE TEMP
tcylaft1		1.962	0.006	(3.06+/-0.16)e2	0.21 +/- 0.13	K	CNT CYL TEMP:16-IN FWD OF SC-TS FIT-1
tpc_ese		1.178	0.008	(2.87+/-0.09)e2	0.04 +/- 0.21	K	ESE TEMP
tsamyt	on	-0.084	0.040	(3.19+/-0.03)e2	0.01 +/- 0.06	K	-Y WING SOLAR ARRAY TEMP
	off	-0.002	0.002	(3.19+/-0.02)e2	0.01 +/- 0.02	K	-Y WING SOLAR ARRAY TEMP
tsapyt	on	-0.049	0.040	(3.19+/-0.03)e2	0.01 +/- 0.06	K	+Y WING SOLAR ARRAY TEMP
	off	0.032	0.002	(3.19+/-0.02)e2	0.02 +/- 0.02	K	+Y WING SOLAR ARRAY TEMP

S/C Anc Temperature

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
tatecdrt	0.621	0.002	(2.90+/-0.05)e2	0.06 +/- 0.04	K	TEC DRIVER RDNT TEMP
trspmtpc	1.579	0.006	(2.98+/-0.13)e2	0.07 +/- 0.15	K	RAD SHR PNL TEMP:TTWN MUPS AND PCAD
tsctsf1	1.912	0.005	(3.04+/-0.16)e2	0.17 +/- 0.10	K	SC-TS FITTING -1 TEMP
tsctsf2	0.834	0.003	(2.80+/-0.07)e2	0.04 +/- 0.05	K	SC-TS FITTING -2 TEMP

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

MTA Monitoring Report 12/26/25 - 01/01/26

Radiation

Detrended CTI

ACIS Warm Pixels

ACIS Focal Plane Temperature

SIM Movements

Telemetry

IRUs

Recent Observations

Trending

Battery Usage

S/C Main Temperatures

S/C Anc Temperature