MTA Monitoring Report 03/20/26 - 03/26/26

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	(786,117) (283,278)	(787,181) (910,239)	(104,31) (178,149) (803,225) (526,66) (837,378) (726,537) (99,899)	(21,95) (617,159) (394,80)			(335,412)
Flickering Warm Pixels	(171,937) (692,141) (154,9) (343,119)	(271,24) (427,125) (370,70) (700,242)	(353,201) (665,25) (345,12)	(680,391) (931,553) (318,53) (811,637)	(728,340) (233,102) (233,227) (161,206) (669,577)	(1000,214) (884,31) (670,387) (849,169)		(182,474) (139,109) (275,393) (666,165) (295,978) (675,304) (597,187) (136,65)
Current Hot Pixels
Flickering Hot Pixels
Warm column candidates					1022 510 512		1022 512
Flickering Warm column candidates									40

ACIS Focal Plane Temperature

For this period, 11 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
078.27	-110.99	1.45
078.61	-110.16	0.34
078.96	-110.02	0.44
079.48	-103.07	0.43
079.81	-110.73	0.34
080.52	-110.09	0.69
080.86	-109.96	0.34
081.20	-109.85	0.85
082.05	-111.13	0.26
083.09	-110.17	0.75
083.45	-111.12	0.51

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

10 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	03/20/26	03/21/26	03/22/26	03/23/26	03/24/26	03/25/26	03/26/26	yellow limits (lower) upper	red limits (lower) upper	Units	Description
AWD1TQI	(-3.31)		(-3.39)			(-3.39)		(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 1 TORQUE CURRENT
AWD6TQI	(-3.43)		(-3.39)			(-3.43)		(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 6 TORQUE CURRENT
CTXBPWR	(0.00)	(0.00)					(0.00)	(36.12) 37.0	(36.0) 38.0	DBM	TRANSMITTER B OUTPUT POWER
MZOBACONE	311.12				312.38	311.37	309.23	(260.2) 303.0	(250.2) 308.0	CONE	-Z SIDE OBA CONE
OBAAVG	302.61				303.40	303.09	301.32	(282.5) 300.0	(281.4) 301.0	K	OBA/TFTE TEMP
OBADIAGRAD	4.82	4.64	4.57	4.62	4.86	4.67	4.87	(-1.11) 3.5	(-2.78) 3.9	K	OBA DIAM GRAD
PZOBACONE					308.04			(260.2) 303.0	(250.2) 308.0	CONE	+Z SIDE OBA CONE
TCYZ_RW1			(276.44)					(288.15) 363.15	(278.15) 404.15	K	RWA -1 TEMP (RWA CRNR COMP)
TCYZ_RW6			(276.44)	(276.44)				(288.15) 363.15	(278.15) 404.15	K	RWA -6 TEMP (RWA CRNR COMP)
TFTERANGE	46.36	45.38	45.42		47.56	48.03	48.13	(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
32223	ACIS-3678	NONE	NGC3626	OK	OK
32235	ACIS-01236	NONE	Perseus cluster E	OK	OK
32222	ACIS-3678	NONE	NGC3626	OK	OK
30363	ACIS-01236	NONE	Perseus cluster E	OK	OK
32236	ACIS-0123	NONE	Abell 2255	OK	OK
32227	ACIS-3678	NONE	NGC4548	OK	OK
32224	ACIS-3678	NONE	NGC3626	OK	OK
30326	ACIS-0123	NONE	Perseus cluster N	OK	OK
32229	ACIS-01236	NONE	Perseus cluster N	OK	OK
32228	ACIS-3678	NONE	NGC4548	OK	OK
30327	ACIS-01236	NONE	Perseus cluster N	OK	OK
32237	ACIS-3678	NONE	NGC3626	OK	OK
31878	ACIS-3678	NONE	NGC3626	OK	OK
32230	ACIS-0123	NONE	Perseus cluster N	OK	OK
30357	ACIS-0123	NONE	Perseus cluster S	OK	OK
32238	ACIS-3678	NONE	NGC3626	OK	OK
32232	ACIS-0123	NONE	Perseus cluster S	OK	OK
32231	ACIS-01236	NONE	Perseus cluster N	OK	OK
30323	ACIS-01236	NONE	Perseus cluster N	OK	OK
32162	ACIS-3678	NONE	NGC4654	OK	OK
32247	ACIS-01236	NONE	Perseus cluster N	OK	OK
32250	ACIS-3678	NONE	NGC4654	OK	OK
32189	ACIS-0123	NONE	Center of COSMOS-Web	OK	OK
30324	ACIS-01236	NONE	Perseus cluster N	OK	OK
31041	ACIS-67	NONE	At 2016blu	OK	OK
31551	ACIS-456789	HETG	SNR 1987A	OK/NA	OK
32254	ACIS-67	NONE	At 2016blu	OK	OK
29828	ACIS-2367	NONE	SN 1986J	OK	OK
32252	ACIS-678	NONE	MASTER J0620+5446	OK	OK
32258	ACIS-678	NONE	MASTER J0620+5446	OK	OK
32253	ACIS-67	NONE	Gaia DR2 3122263962301803904	OK	OK
32256	ACIS-67	NONE	At 2016blu	OK	OK
32255	ACIS-67	NONE	At 2016blu	OK	OK

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
oobthr02	0.401	0.026	(2.87+/-0.21)e2	0.03 +/- 0.03	K	RT 25: HRMA STRUT
oobthr03	0.627	0.018	(2.92+/-0.16)e2	0.04 +/- 0.04	K	RT 26: HRMA STRUT
oobthr04	0.775	0.018	(2.95+/-0.16)e2	0.04 +/- 0.04	K	RT 27: HRMA STRUT
oobthr05	0.764	0.024	(2.95+/-0.21)e2	0.04 +/- 0.04	K	RT 28: HRMA STRUT
oobthr06	0.628	0.019	(2.93+/-0.17)e2	0.05 +/- 0.04	K	RT 29: HRMA STRUT
oobthr07	0.414	0.018	(2.88+/-0.15)e2	0.04 +/- 0.03	K	RT 30: HRMA STRUT
oobthr08	1.019	0.003	(2.94+/-0.08)e2	0.06 +/- 0.06	K	RT 31: OBA CONE
oobthr09	0.785	0.125	(2.95+/-1.03)e2	0.06 +/- 0.06	K	RT 32: OBA CONE
oobthr10	0.790	0.082	(2.93+/-0.68)e2	0.06 +/- 0.05	K	RT 33: OBA CONE
oobthr11	0.919	0.003	(2.92+/-0.08)e2	0.06 +/- 0.05	K	RT 34: OBA CONE
oobthr12	0.910	0.003	(2.92+/-0.08)e2	0.06 +/- 0.05	K	RT 35: OBA CONE
oobthr13	-3.612	2.523	(3.10+/-20.81)e2	0.06 +/- 0.05	K	RT 36: OBA CONE
oobthr14	-1.093	1.139	(3.01+/-9.39)e2	0.06 +/- 0.05	K	RT 37: OBA CONE
oobthr15	0.927	0.003	(2.93+/-0.08)e2	0.07 +/- 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	(6.50+/-9.81)e-5	K	RT 2: HRMA FORWARD APERTURE PLATE
ohrthr03	0.005	1.020e-04	(2.95+/-0.00)e2	0.00 +/- 0.00	K	RT 5: HRMA FORWARD APERTURE PLATE
ohrthr04	-0.004	0.002	(2.95+/-0.02)e2	-(4.60+/-7.42)e-5	K	RT 9: HRMA PRECOLLIMATOR PLATE 10
ohrthr05	0.126	9.725e-04	(2.96+/-0.01)e2	0.03 +/- 0.02	K	RT 13: HRMA AFT HEATER PLATE
ohrthr06	0.091	6.118e-04	(2.95+/-0.01)e2	0.01 +/- 0.01	K	RT 14: HRMA MOUNT
ohrthr07	0.098	6.004e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 18: HSA OUTER CYLINDER
ohrthr08	0.092	5.915e-04	(2.95+/-0.01)e2	0.01 +/- 0.01	K	RT 103: HRMA CAP
ohrthr09	0.089	5.516e-04	(2.95+/-0.01)e2	0.01 +/- 0.01	K	RT 105: HRMA CAP
ohrthr10	0.082	4.975e-04	(2.95+/-0.01)e2	0.01 +/- 0.01	K	RT 107: HRMA P1 FLEXURE
ohrthr11	0.080	5.006e-04	(2.95+/-0.01)e2	0.01 +/- 0.01	K	RT 108: HRMA P4 FLEXURE
ohrthr12	0.102	6.471e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 115: HRMA H1 FLEXURE
ohrthr13	0.098	6.180e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 116: HRMA H6 FLEXURE
ohrthr14	0.138	7.716e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 121: HSA AFT INNER CYLINDER

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

MTA Monitoring Report 03/20/26 - 03/26/26

Radiation

Detrended CTI

ACIS Warm Pixels

ACIS Focal Plane Temperature

SIM Movements

Telemetry

IRUs

Recent Observations

Trending

OBA Heaters

HRMA Heaters