MTA Monitoring Report 08/14/26 - 08/20/26

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				(849,171)
Current Warm Pixels	(786,117)	(910,239)	(104,31) (178,149) (837,378) (526,66) (726,537) (665,25) (803,225) (99,899)	(811,637) (21,95)		(849,169) (1000,214) (670,387)	(335,412)
Flickering Warm Pixels	(692,141) (283,278)	(427,125) (802,665) (787,181) (370,70)	(353,201)	(394,80) (318,53) (680,391) (617,159)		(287,164) (884,31)	(74,134) (126,856)	(447,769) (295,978) (136,65) (182,474) (275,393) (597,187)
Current Hot Pixels
Flickering Hot Pixels
Warm column candidates					1022 512 510		1022 512
Flickering Warm column candidates

ACIS Focal Plane Temperature

For this period, 9 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
224.27	-112.28	0.31
225.00	-99.23	0.95
225.74	-111.95	0.54
226.13	-112.92	0.93
227.66	-102.86	1.04
228.47	-112.67	0.60
229.24	-105.93	0.67
230.29	-97.63	1.20
230.80	-112.76	0.52

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

9 TSC moves this period

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

Telemetry

New violations or new extrema are shown in blue cells.

MSID	08/14/26	08/15/26	08/16/26	08/17/26	08/18/26	08/19/26	08/20/26	yellow limits (lower) upper	red limits (lower) upper	Units	Description
1CRBT	677.96	677.96	677.96	677.96	677.96	677.96	677.96	(136.15) 183.15	(131.15) 193.15	K	COLD RADIATOR TEMP. B
1CRBTC	(43.24)	(25.39)	(63.76)	(30.48)	(17.76)	(71.48)	(45.80)	(136.15) 183.15	(131.15) 193.15	C	COLD RADIATOR TEMP. B
AWD1TQI				(-3.39)		(-3.39)	(-3.39)	(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 1 TORQUE CURRENT
AWD3TQI					(-3.39)			(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 3 TORQUE CURRENT
AWD4TQI					(-3.43)			(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 4 TORQUE CURRENT
AWD6TQI				(-3.47)		(-3.47)	(-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)			(36.12) 37.0	(36.0) 38.0	DBM	TRANSMITTER B OUTPUT POWER
HRMAAVG							(303.89)	(306.0) 308.0	(305.0) 309.0	K	AVG OF HRMA METRICS
MZOBACONE	313.23	313.20	313.85	313.46	310.59	313.56	313.17	(260.2) 303.0	(250.2) 308.0	CONE	-Z SIDE OBA CONE
OBAAVG	304.16	304.30			302.21		305.58	(282.5) 300.0	(281.4) 301.0	K	OBA/TFTE TEMP
OBADIAGRAD	4.78	4.65	4.61	4.14	4.54	4.60	4.38	(-1.11) 3.5	(-2.78) 3.9	K	OBA DIAM GRAD
PZOBACONE	308.76	308.96	309.75	309.64	308.65	309.41	310.09	(260.2) 303.0	(250.2) 308.0	CONE	+Z SIDE OBA CONE
TCYZ_RW6	(276.44)							(288.15) 363.15	(278.15) 404.15	K	RWA -6 TEMP (RWA CRNR COMP)
TFTERANGE		46.71		48.95	47.95		49.07	(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
32490	ACIS-0123	NONE	Perseus cluster S	OK	OK
32493	ACIS-67	NONE	2MASX J22373491-1925343	OK	OK
32487	ACIS-67	NONE	SDSSJ222203.73-092712.0	OK	OK
32486	ACIS-67	NONE	TDE 2025aarm	OK	OK
30354	ACIS-0123	NONE	Perseus cluster S	OK	OK
32494	ACIS-3678	NONE	PSO J308.0416-21.2339	OK	OK
32489	ACIS-67	NONE	Mrk915	OK	OK
30349	ACIS-0123	NONE	Perseus cluster S	OK	OK
32459	ACIS-67	NONE	EP J223759.5+531421	OK	OK
32499	ACIS-0123	NONE	SWIFT J2157.4-3316	OK	OK
30227	ACIS-67	NONE	NGC 424	OK	OK
30331	ACIS-01236	NONE	Perseus cluster N	OK	OK
30234	ACIS-0123	NONE	[vD2023]1	OK	OK
31499	HRC-I	HETG	TWA 7	OK/NA	OK
29990	ACIS-67	HETG	NGC 7213	OK/NA	OK
31037	HRC-I	NONE	TIC466376085	OK	OK
30007	ACIS-67	NONE	MaNGA 8982-9101	OK	OK
32504	HRC-I	NONE	TIC466376085	OK	OK
31167	ACIS-67	NONE	SN 2023ixf	OK	OK
30089	ACIS-456789	HETG	TV Cassiopeia	OK/NA	OK
32505	HRC-I	NONE	TIC466376085	OK	OK
29830	ACIS-2367	NONE	SN 1986J	OK	OK
32506	ACIS-67	NONE	SN 2023ixf	OK	OK
31002	ACIS-0123	NONE	PSR J1813-1246	OK	OK
30130	ACIS-67	NONE	SNR G1.9+0.3	OK	OK

MSID		Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
eb1v	off	-0.020	1.291e-04	32.44 +/- 0.19	-0.01 +/- 0.00	V	BATT 1 VOLTAGE
	on	-0.045	0.007	32.20 +/- 0.67	0.01 +/- 0.00	V	BATT 1 VOLTAGE
eb2ci	off	-0.004	7.297e-05	0.33 +/- 0.07	-(4.79+/-11.52)e-4	AMP	BATT 2 CHARGE CURRENT
	on	0.006	0.005	0.43 +/- 0.30	-0.00 +/- 0.00	AMP	BATT 2 CHARGE CURRENT
eb2v	off	-0.019	1.326e-04	32.43 +/- 0.19	-0.01 +/- 0.00	V	BATT 2 VOLTAGE
	on	-0.046	0.008	32.16 +/- 0.66	0.01 +/- 0.00	V	BATT 2 VOLTAGE
ecnv3v		-0.002	1.616e-05	15.30 +/- 0.02	-(8.82+/-6.11)e-5	V	CONV 3 +15V OUTPUT
eepa5v		-8.145e-05	1.834e-04	5.24 +/- 0.15	(3.56+/-0.23)e-10	V	+5V RCTU_EP A

S/C Main Temperatures

MSID		Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
tape2pst		0.612	0.002	(2.91+/-0.05)e2	0.03 +/- 0.04	K	PEA-2 POWER SUPPLY TEMP
tapea1t		0.543	0.002	(3.02+/-0.05)e2	0.03 +/- 0.04	K	PEA-1 CASE TEMP
tcylaft1		1.991	0.006	(3.07+/-0.17)e2	0.18 +/- 0.12	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	-0.090	0.038	(3.19+/-0.03)e2	0.01 +/- 0.05	K	-Y WING SOLAR ARRAY TEMP
	off	-0.012	0.002	(3.19+/-0.02)e2	-0.04 +/- 0.02	K	-Y WING SOLAR ARRAY TEMP
tsapyt	on	-0.053	0.038	(3.19+/-0.03)e2	0.02 +/- 0.05	K	+Y WING SOLAR ARRAY TEMP
	off	0.024	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	0.04 +/- 0.04	K	TEC DRIVER RDNT TEMP
trspmtpc	1.602	0.006	(2.99+/-0.14)e2	0.05 +/- 0.14	K	RAD SHR PNL TEMP:TTWN MUPS AND PCAD
tsctsf1	1.932	0.005	(3.05+/-0.16)e2	0.14 +/- 0.10	K	SC-TS FITTING -1 TEMP
tsctsf2	0.852	0.003	(2.80+/-0.07)e2	0.02 +/- 0.05	K	SC-TS FITTING -2 TEMP

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

MTA Monitoring Report 08/14/26 - 08/20/26

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