MTA Monitoring Report 02/20/26 - 02/26/26

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
Previously Unknown Bad Pixels
Current Warm Pixels	(786,117)	(787,181) (802,665) (910,239)	(803,225) (104,31) (526,66) (837,378) (178,149) (726,537) (99,899) (665,25)	(680,391) (811,637) (21,95)		(849,169) (670,387)	(335,412)
Flickering Warm Pixels	(171,937) (283,278)	(427,125) (370,70)	(642,361)	(318,53) (617,159) (931,553) (394,80)	(263,317) (367,511) (357,303) (233,102) (161,206) (369,376)	(884,31) (1000,214)		(275,393) (881,53) (597,187) (182,474) (447,769) (136,65) (675,304) (295,978)
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, 7 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
050.11	-109.85	1.20
051.66	-111.80	0.71
052.32	-106.38	0.46
053.03	-99.94	1.62
054.54	-110.66	0.49
055.05	-111.14	0.51
055.66	-101.80	0.41

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	0.00136 s
mission average time/step	0.00132 s

Telemetry

New violations or new extrema are shown in blue cells.

MSID	02/20/26	02/21/26	02/22/26	02/23/26	02/24/26	02/25/26	02/26/26	yellow limits (lower) upper	red limits (lower) upper	Units	Description
AFTBLKHDT	310.06	309.54						(260.2) 303.0	(250.2) 308.0	TEMP	AFT BULKHEAD TEMP
AWD1TQI		(-3.35)			(-3.43)			(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 1 TORQUE CURRENT
AWD6TQI		(-3.43)			(-3.39)			(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 6 TORQUE CURRENT
CALPALV						(117.00)		(126.0) 128.0	(125.0) 129.0	V	Cal Pulser Amplitude
CTXBPWR			(0.00)		(0.00)	(0.00)		(36.12) 37.0	(36.0) 38.0	DBM	TRANSMITTER B OUTPUT POWER
FAMTRTEMP	292.15	292.15						(260.0) 289.0	(255.0) 292.0	K	FA Motor Temperature
MZOBACONE	315.90	314.42	310.05		310.65	314.16	312.28	(260.2) 303.0	(250.2) 308.0	CONE	-Z SIDE OBA CONE
OBAAVG		306.48	302.17		302.26	305.28	303.39	(282.5) 300.0	(281.4) 301.0	K	OBA/TFTE TEMP
OBACONEAVG			307.29	304.64	307.43			(282.5) 300.0	(281.8) 301.0	K	OBA CONE AVG TEMP
OBADIAGRAD	4.76	4.81	4.68	4.97	4.97	4.87	4.93	(-1.11) 3.5	(-2.78) 3.9	K	OBA DIAM GRAD
PZOBACONE	311.79	311.67				309.97		(260.2) 303.0	(250.2) 308.0	CONE	+Z SIDE OBA CONE
TCYZ_RW6	(276.07)	(277.53)	(275.71)					(288.15) 363.15	(278.15) 404.15	K	RWA -6 TEMP (RWA CRNR COMP)
TFTERANGE	47.24	46.62	47.83	46.73	47.45	48.94	46.72	(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
32169	ACIS-0123	NONE	Abell 2255	OK	OK
31995	ACIS-3678	NONE	NGC3626	OK	OK
31121	ACIS-67	NONE	ZTF J1905+3134	OK	OK
30307	ACIS-0123	NONE	Perseus cluster	OK	OK
32167	ACIS-0123	NONE	Center of COSMOS-Web	OK	OK
30318	ACIS-01236	NONE	Perseus cluster	OK	OK
32170	ACIS-67	NONE	ZTF J1905+3134	OK	OK
32168	ACIS-0123	NONE	Center of COSMOS-Web	OK	OK
30319	ACIS-01236	NONE	Perseus cluster	OK	OK
30058	ACIS-0123	NONE	Center of COSMOS-Web	OK	OK
32163	ACIS-67	NONE	MRCB0157-311	OK	OK
32165	ACIS-0123	NONE	Center of COSMOS-Web	OK	OK
32166	ACIS-0123	NONE	Center of COSMOS-Web	OK	OK
32172	ACIS-67	NONE	MRCB0157-311	OK	OK
31358	HRC-I	NONE	ArLac	OK	OK
31359	HRC-I	NONE	ArLac	OK	OK
31360	HRC-I	NONE	ArLac	OK	OK
30529	ACIS-67	NONE	SDSS J102258.41+123429.7	OK	OK
32178	ACIS-67	NONE	SDSS J102258.41+123429.7	OK	OK
30297	ACIS-01236	NONE	Perseus cluster	OK	OK
30300	ACIS-0123	NONE	Perseus cluster	OK	OK
29661	ACIS-3678	NONE	NGC4654	OK	OK
31080	ACIS-456789	HETG	GS 1354-64	CC/NA	OK
31896	HRC-I	NONE	ArLac	OK	OK
31362	HRC-I	NONE	ArLac	OK	OK
30301	ACIS-01236	NONE	Perseus cluster	OK	OK
30256	ACIS-0123	NONE	Center of COSMOS-Web	OK	OK
32179	ACIS-67	NONE	SDSS J102258.41+123429.7	OK	OK
30303	ACIS-0123	NONE	Perseus cluster	OK	OK

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
3btu_bpt	0.388	0.007	(2.66+/-0.07)e2	-0.12 +/- 0.18	K	BTU BASEPLATE (+X)), ABORT HTR TSC2
3fabraat	0.177	0.004	(2.67+/-0.04)e2	-0.04 +/- 0.07	K	FA STRUCTURE AT BEARING A ABORT HTR. FA6 TEMP
3fabrcat	0.175	0.008	(2.76+/-0.06)e2	0.06 +/- 0.15	K	FA STRUCTURE AT BEARING C ABORT HTR. FA6 TEMP
3famyzat	-0.159	0.014	(2.83+/-0.12)e2	0.03 +/- 0.17	K	FA STRUCTURE +X FACE AT -Y-Z END ABORT HTR. FA6 TEMP
3fapyzat	-0.249	0.014	(2.82+/-0.12)e2	-0.02 +/- 0.08	K	FA STRUCTURE +X FACE AT +Y+Z END ABORT HTR. FA6 TEMP
3faralat	0.044	0.013	(2.77+/-0.11)e2	-0.00 +/- 0.23	K	FA STRUCTURE AT RAIL -Z, ABORT HEATER FA6 TEMP
3flcabpt	0.331	0.004	(2.82+/-0.04)e2	-0.09 +/- 0.08	K	FLCA BASEPLATE (+X)
3rctubpt	0.515	0.009	(2.74+/-0.09)e2	-0.15 +/- 0.21	K	RCTU BASEPLATE (+X)
3tsmxcet	1.891	0.024	(2.30+/-0.25)e2	0.09 +/- 0.53	K	-X TURTLE SHELL NR HRC CEA
3tsmxspt	10.578	0.101	(3.34+/-1.18)e2	1.97 +/- 1.85	K	-X TURTLE SHELL NR ACIS SS
3tsmydpt	0.729	0.010	(2.33+/-0.10)e2	-0.08 +/- 0.21	K	-Y TURTLE SHELL NR ACIS DPA
3tspyfet	0.160	0.008	(2.34+/-0.06)e2	-0.06 +/- 0.16	K	+Y TURTLE SHELL NR HRC FEA
3tspzdet	0.624	0.008	(2.67+/-0.08)e2	-0.04 +/- 0.18	K	+Z TURTLE SHELL NR ACIS DEA
3tspzspt	0.639	0.007	(2.71+/-0.08)e2	-0.10 +/- 0.17	K	+Z TURTLE SHELL NR ACIS SS
3ttacs1t	0.206	0.003	(2.66+/-0.03)e2	-0.02 +/- 0.06	K	TT at ACIS Attach #1 Abort Htr
3ttacs2t	0.193	0.004	(2.66+/-0.03)e2	0.03 +/- 0.08	K	TT at ACIS Attach #2 Abort Htr
3ttacs3t	0.175	0.002	(2.62+/-0.02)e2	0.03 +/- 0.04	K	TT at ACIS Attach #3 Abort Htr
3ttbrgbt	0.258	0.010	(2.60+/-0.08)e2	-0.03 +/- 0.23	K	TT at Bearing B, Abort Htr TSC4
3tthrc1t	0.237	0.011	(2.69+/-0.09)e2	-0.04 +/- 0.24	K	TT at HRC Bipod Attach #1
3tthrc2t	0.182	0.011	(2.73+/-0.09)e2	-0.00 +/- 0.24	K	TT at HRC Bipod Attach #2
3tthrc3t	0.139	0.004	(2.68+/-0.03)e2	0.07 +/- 0.09	K	TT at HRC Bipod Attach #3
3ttralat	0.313	0.008	(2.47+/-0.07)e2	0.12 +/- 0.15	K	TT at Rail A, Abort Htr TSC3
3ttralct	0.197	0.005	(2.67+/-0.04)e2	0.04 +/- 0.12	K	TT at Rail C, Abort Htr TSC3
3ttvalvt	0.392	0.009	(2.54+/-0.08)e2	0.14 +/- 0.21	K	TT at Vent Valve, Abort Htr TSC7

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

MTA Monitoring Report 02/20/26 - 02/26/26

Radiation

Detrended CTI