MTA Monitoring Report 03/27/26 - 04/02/26

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
Previously Unknown Bad Pixels
Current Warm Pixels	(786,117)	(787,181) (910,239)	(178,149) (104,31) (526,66) (803,225)	(21,95) (318,53)		(670,387)	(335,412)
Flickering Warm Pixels	(171,937) (154,9) (692,141) (283,278)	(370,70) (427,125) (271,24)	(837,378) (353,201) (642,361) (99,899) (665,25) (345,12) (726,537)	(617,159) (811,637) (394,80) (680,391)	(161,206) (641,669) (341,427) (263,317) (233,102) (367,511) (669,577) (369,376) (728,340) (233,227) (357,303) (282,385)	(884,31) (849,169) (1000,214)		(675,304) (136,65) (447,769) (139,109) (275,393) (295,978) (597,187) (182,474)
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)
086.74	-118.26	2.79
087.32	-108.06	1.01
088.96	-107.76	2.58
090.95	-111.28	1.15

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

16 TSC moves this period

weekly average time/step	0.00138 s
mission average time/step	0.00132 s

Telemetry

New violations or new extrema are shown in blue cells.

MSID	03/27/26	03/28/26	03/29/26	03/30/26	03/31/26	04/01/26	04/02/26	yellow limits (lower) upper	red limits (lower) upper	Units	Description
AWD1TQI				(-3.39)				(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 1 TORQUE CURRENT
AWD4TQI		(-3.43)						(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 4 TORQUE CURRENT
AWD6TQI		(-3.39)		(-3.47)				(-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	313.32	313.17	311.80	314.23	310.15			(260.2) 303.0	(250.2) 308.0	CONE	-Z SIDE OBA CONE
OBAAVG	304.92	305.22	303.38	305.65	302.66			(282.5) 300.0	(281.4) 301.0	K	OBA/TFTE TEMP
OBACONEAVG						302.99	301.45	(282.5) 300.0	(281.8) 301.0	K	OBA CONE AVG TEMP
OBADIAGRAD	4.67	4.39	4.44	4.29	4.29	4.39	4.41	(-1.11) 3.5	(-2.78) 3.9	K	OBA DIAM GRAD
PZOBACONE	309.39	309.63		310.38				(260.2) 303.0	(250.2) 308.0	CONE	+Z SIDE OBA CONE
TCYZ_RW1			(274.62)		(274.62)			(288.15) 363.15	(278.15) 404.15	K	RWA -1 TEMP (RWA CRNR COMP)
TCYZ_RW6		(273.16)	(277.17)		(276.44)			(288.15) 363.15	(278.15) 404.15	K	RWA -6 TEMP (RWA CRNR COMP)
TFTERANGE		49.26	48.42	49.04	45.32			(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
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
31057	HRC-I	NONE	HD 26736	OK	OK
32257	ACIS-67	NONE	At 2016blu	OK	OK
32259	ACIS-67	NONE	Gaia DR2 3122263962301803904	OK	OK
30025	ACIS-0123	NONE	Abell 2255	OK	OK
31150	ACIS-67	NONE	AT2026dbl	OK	OK
32249	ACIS-0123	NONE	Perseus cluster N	OK	OK
32244	ACIS-67	HETG	NGC 4593	OK/NA	OK
30328	ACIS-0123	NONE	Perseus cluster N	OK	OK
31343	ACIS-0123	NONE	V4641 Sgr S2	OK	OK
31151	ACIS-67	NONE	AT2026dbl	OK	OK
32261	ACIS-67	NONE	CD-31 16041	OK	OK
32245	ACIS-67	HETG	NGC 4593	OK/NA	OK
29933	ACIS-67	NONE	SDSS J134234.31+191338.9	OK	OK
31127	ACIS-67	NONE	SN 2026dix	OK	OK
29913	ACIS-67	NONE	SDSS J164818.07+415550.2	OK	OK
30335	ACIS-0123	NONE	Perseus cluster W	OK	OK
29656	ACIS-3678	NONE	NGC4496A	OK	OK
32268	ACIS-01236	NONE	Perseus cluster W	OK	OK
32262	ACIS-3678	NONE	NGC4496A	OK	OK
32263	ACIS-3678	NONE	NGC4496A	OK	OK
32269	ACIS-01236	NONE	Perseus cluster W	OK	OK
32265	ACIS-3678	NONE	NGC4496A	OK	OK
32265	ACIS-3678	NONE	NGC4496A	OK	OK
32272	ACIS-0123	NONE	Perseus cluster W	OK	OK
32271	ACIS-01236	NONE	Perseus cluster W	OK	OK
32270	ACIS-01236	NONE	Perseus cluster W	OK	OK
31152	ACIS-67	NONE	AT2026dbl	OK	OK
30177	ACIS-3678	NONE	NGC4694	OK	OK
32273	ACIS-0123	NONE	Perseus cluster W	OK	OK
30337	ACIS-01236	NONE	Perseus cluster W	OK	OK

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
4rt556t	0.093	6.056e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 556 - HRMA TEMP
4rt558t	0.107	6.459e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 558 - HRMA TEMP
4rt568t	0.734	0.002	(2.93+/-0.06)e2	0.08 +/- 0.05	K	RT 568 - HRMA TEMP
4rt575t	1.018	0.003	(2.95+/-0.08)e2	0.07 +/- 0.06	K	RT 575 - OB CONE TEMP
4rt576t	0.750	0.002	(2.89+/-0.06)e2	0.06 +/- 0.05	K	RT 576 - OB CONE TEMP
4rt577t	1.101	0.003	(2.96+/-0.09)e2	0.13 +/- 0.08	K	RT 577 - OB CONE TEMP
4rt578t	1.014	0.003	(2.94+/-0.08)e2	0.12 +/- 0.07	K	RT 578 - OB CONE TEMP
4rt579t	0.765	0.003	(2.90+/-0.07)e2	0.12 +/- 0.07	K	RT 579 - OB CONE TEMP
4rt580t	0.776	0.003	(2.90+/-0.07)e2	0.13 +/- 0.07	K	RT 580 - OB CONE TEMP
4rt581t	0.868	0.004	(2.92+/-0.08)e2	0.15 +/- 0.08	K	RT 581 - OB CONE TEMP

HRMA Struts

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
4rt582t	0.386	0.001	(2.87+/-0.03)e2	0.04 +/- 0.03	K	RT 582 - STRUT TEMP
4rt583t	0.594	0.002	(2.92+/-0.05)e2	0.04 +/- 0.04	K	RT 583 - STRUT TEMP
4rt584t	0.743	0.002	(2.95+/-0.06)e2	0.04 +/- 0.04	K	RT 584 - STRUT TEMP
4rt585t	0.746	0.002	(2.95+/-0.06)e2	0.05 +/- 0.04	K	RT 585 - STRUT TEMP
4rt586t	0.597	0.002	(2.92+/-0.05)e2	0.05 +/- 0.04	K	RT 586 - STRUT TEMP
4rt587t	0.386	0.002	(2.88+/-0.03)e2	0.04 +/- 0.03	K	RT 587 - STRUT TEMP
4rt588t	-0.007	8.126e-04	(2.83+/-0.01)e2	0.01 +/- 0.02	K	RT 588 - STRUT TEMP
4rt589t	0.786	0.003	(2.90+/-0.07)e2	0.05 +/- 0.05	K	RT 589 - STRUT TEMP
4rt590t	1.366	0.004	(2.98+/-0.11)e2	0.05 +/- 0.07	K	RT 590 - STRUT TEMP
4rt591t	1.357	0.004	(2.99+/-0.11)e2	0.07 +/- 0.07	K	RT 591 - STRUT TEMP
4rt592t	0.718	0.003	(2.89+/-0.06)e2	0.06 +/- 0.04	K	RT 592 - STRUT TEMP
4rt593t	-0.013	6.486e-04	(2.83+/-0.01)e2	0.00 +/- 0.01	K	RT 593 - STRUT TEMP
4rt594t	0.009	0.003	(2.88+/-0.02)e2	0.02 +/- 0.01	K	RT 594 - TFTE TEMP
4rt595t	0.728	0.002	(2.90+/-0.06)e2	0.05 +/- 0.04	K	RT 595 - TFTE TEMP
4rt596t	0.613	0.003	(2.88+/-0.05)e2	0.01 +/- 0.04	K	RT 596 - TFTE TEMP
4rt597t	1.302	0.003	(2.98+/-0.11)e2	0.10 +/- 0.07	K	RT 597 - TFTE TEMP
4rt598t	1.289	0.003	(2.97+/-0.11)e2	0.10 +/- 0.07	K	RT 598 - TFTE TEMP

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

MTA Monitoring Report 03/27/26 - 04/02/26

Radiation

Detrended CTI

ACIS Warm Pixels

ACIS Focal Plane Temperature

SIM Movements

Telemetry

IRUs

Recent Observations

Trending

HRMA Thermal

HRMA Struts