MTA Monitoring Report 07/31/26 - 08/06/26

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			(624,68)
Current Warm Pixels			(526,66) (178,149) (803,225) (104,31) (665,25)	(811,637) (21,95)		(849,169) (884,31)	(335,412)
Flickering Warm Pixels	(786,117) (283,278) (171,937)	(427,125) (910,239)	(99,899) (837,378) (353,201) (345,12) (726,537)	(394,80) (617,159) (680,391) (931,553)	(357,303) (282,385) (367,511) (369,376) (161,206) (233,102) (728,340) (263,317)	(741,132) (1000,214) (670,387) (357,29)	(126,856)	(881,53) (136,65) (275,393) (182,474) (675,304) (541,41) (447,769) (139,109)
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, 12 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
210.41	-105.10	0.72
210.96	-107.55	0.58
211.45	-113.74	0.36
211.80	-107.13	0.56
212.41	-113.58	0.34
212.75	-111.45	0.42
213.71	-110.33	0.51
214.43	-103.70	0.96
215.66	-111.77	0.35
216.07	-106.63	0.51
216.52	-109.58	0.43
216.82	-116.08	0.24

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

5 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	07/31/26	08/01/26	08/02/26	08/03/26	08/04/26	08/05/26	08/06/26	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)	(30.48)	(12.69)	(17.76)	(15.22)	(17.76)	(12.69)	(136.15) 183.15	(131.15) 193.15	C	COLD RADIATOR TEMP. B
AWD1TQI			(-3.39)		(-3.39)			(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 1 TORQUE CURRENT
AWD6TQI			(-3.43)		(-3.43)			(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 6 TORQUE CURRENT
CTXBPWR	(0.00)	(0.00)	(0.00)	(0.00)			(0.00)	(36.12) 37.0	(36.0) 38.0	DBM	TRANSMITTER B OUTPUT POWER
ESAMYI			(0.06)		(0.06)			(5.63) 30.15	(5.3) 33.0	AMP	S/A -Y CURRENT
ESAPYI			(0.14)		(0.14)			(5.54) 30.15	(5.2) 33.0	AMP	S/A +Y CURRENT
MZOBACONE			309.09	313.57	310.48	310.62	308.60	(260.2) 303.0	(250.2) 308.0	CONE	-Z SIDE OBA CONE
OBAAVG				304.63	302.01	302.45		(282.5) 300.0	(281.4) 301.0	K	OBA/TFTE TEMP
OBACONEAVG	304.71	304.24				307.69		(282.5) 300.0	(281.8) 301.0	K	OBA CONE AVG TEMP
OBADIAGRAD	4.81	4.79	4.79	4.66	4.77	4.79	4.80	(-1.11) 3.5	(-2.78) 3.9	K	OBA DIAM GRAD
PZOBACONE				309.42				(260.2) 303.0	(250.2) 308.0	CONE	+Z SIDE OBA CONE
TFTERANGE	46.07	46.11	46.56	48.34	46.54	46.44		(16.7) 37.5	(11.1) 45.0	K	TFTE VENT/RAD TEMP
TSCTSF3							(268.06)	(278.15) 359.15	(269.15) 483.15	K	SC-TS FITTING -3 TEMP

IRUs

Gyro Bias Drift	Gyro Bias Drift Histogram

Recent Observations

OBSID	DETECTOR	GRATING	TARGET	ANALYSIS	ACA
32472	ACIS-67	NONE	PSO J308.0416-21.2339	OK	OK
29822	ACIS-2367	NONE	SNR G1.9+0.3	OK	OK
31309	ACIS-23678	NONE	ZTF26aavrgaw	OK	OK
29881	ACIS-2567	NONE	SDSS J122558.56+042826.3	OK	OK
29760	ACIS-678	NONE	1eRASS J120806.9+291707	OK	OK
32466	ACIS-67	NONE	Gaia DR2 6885342959337741184	OK	OK
32465	ACIS-0123	NONE	CIZAJ1955.8+0215	OK	OK
31976	ACIS-0123	NONE	PSZ2G144.99-24.64	OK	OK
30347	ACIS-01236	NONE	Perseus cluster S	OK	OK
32470	ACIS-23678	NONE	ZTF26aavrgaw	OK	OK
30350	ACIS-01236	NONE	Perseus cluster S	OK	OK
32473	ACIS-67	NONE	PSO J308.0416-21.2339	OK	OK
32468	ACIS-2367	NONE	SNR G1.9+0.3	OK	OK
32463	ACIS-0123	NONE	SWIFT J2105.1-2106	OK	OK
30351	ACIS-01236	NONE	Perseus cluster S	OK	OK
30352	ACIS-01236	NONE	Perseus cluster S	OK	OK
32469	ACIS-01236	NONE	Perseus cluster S	OK	OK
30406	ACIS-3567	NONE	ClG J0242-2132	OK	OK
31052	ACIS-678	NONE	GL 783	OK	OK
31930	ACIS-3678	NONE	NGC3137	OK	OK
32479	ACIS-678	NONE	GL 783	OK	OK
31117	ACIS-67	NONE	Gaia DR3 5414242958825679488	OK	OK
32480	ACIS-67	NONE	GL 783	OK	OK
30348	ACIS-0123	NONE	Perseus cluster S	OK	OK
31665	ACIS-3678	NONE	PSO J308.0416-21.2339	OK	OK
32485	ACIS-3678	NONE	PSO J308.0416-21.2339	OK	OK
29871	ACIS-2567	NONE	SDSS J143345.14+264915.1	OK	OK
32475	ACIS-2567	NONE	SDSS J143345.14+264915.1	OK	OK
32476	ACIS-2567	NONE	SDSS J143345.14+264915.1	OK	OK
31053	ACIS-67	NONE	GL 783	OK	OK

MSID		Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
afsspc2v	on	0.003	4.152e-04	3.51 +/- 0.14	-(2.85+/-4.43)e-5	V	FSS POWER CONV 2 VOLTAGE
	off	0.001	5.434e-04	0.01 +/- 0.14	(0.00+/-0.00)e0	V	FSS POWER CONV 2 VOLTAGE
airu2g1i	on	-0.485	0.008	(1.01+/-0.06)e2	-0.07 +/- 0.02	mA	IRU-2 GYRO
	off	-0.242	0.074	9.74 +/- 4.62	-0.17 +/- 0.37	mA	IRU-2 GYRO
airu2g2i	on	0.485	0.034	(1.06+/-0.23)e2	0.07 +/- 0.06	mA	IRU-2 GYRO
	off	-0.196	0.076	9.74 +/- 4.74	-0.12 +/- 0.33	mA	IRU-2 GYRO
airu2g2t	on	-0.057	0.008	(3.41+/-0.05)e2	(5.60+/-54.40)e-5	K	IRU-2 GYRO
	off	0.071	0.045	(2.93+/-0.03)e2	-0.03 +/- 0.02	K	IRU-2 GYRO

Drift rate updates to gyros

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
aogyrct1	-0.224	0.998	15.03 +/- 839.52	-18.47 +/- 10.78	CNTS	ACCUMULATED GYRO PULSE COUNTS FROM OBC SELECTED GYRO 1
aogyrct2	-2.961	1.603	5.19 +/- 1348.59	-8.57 +/- 24.92	CNTS	ACCUMULATED GYRO PULSE COUNTS FROM OBC SELECTED GYRO 2
aogyrct3	2.926	2.894	-19.61 +/- 2434.10	22.07 +/- 33.22	CNTS	ACCUMULATED GYRO PULSE COUNTS FROM OBC SELECTED GYRO 3
aogyrct4	0.561	1.137	-31.95 +/- 956.36	-3.39 +/- 6.14	CNTS	ACCUMULATED GYRO PULSE COUNTS FROM OBC SELECTED GYRO 4

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

MTA Monitoring Report 07/31/26 - 08/06/26

Radiation

Detrended CTI

ACIS Warm Pixels

ACIS Focal Plane Temperature

SIM Movements

Telemetry

IRUs

Recent Observations

Trending

IRU Temperatures and Voltages

Drift rate updates to gyros