MTA Monitoring Report 08/21/26 - 08/27/26

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
Previously Unknown Bad Pixels
Current Warm Pixels			(104,31) (178,149) (99,899) (526,66) (837,378) (803,225)	(811,637) (21,95)		(1000,214) (849,169) (670,387)	(335,412)
Flickering Warm Pixels	(786,117) (283,278)	(802,665) (427,125) (787,181) (910,239) (370,70)	(345,12) (726,537) (665,25) (353,201)	(617,159) (318,53) (680,391) (394,80)	(641,669) (669,577) (233,227) (367,511) (226,202) (233,102) (282,385) (439,452) (728,340) (554,484) (369,376) (161,206) (263,317)	(884,31)	(126,856)
Current Hot Pixels
Flickering Hot Pixels
Warm column candidates					510 512 1022		512 1022
Flickering Warm column candidates

ACIS Focal Plane Temperature

For this period, 7 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
231.19	-116.81	0.24
231.41	-111.14	0.53
231.92	-114.95	0.33
232.83	-104.30	1.06
235.58	-99.91	3.65
237.06	-109.25	0.41
237.45	-110.03	0.40

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

15 TSC moves this period

weekly average time/step	0.00135 s
mission average time/step	0.00132 s

Telemetry

New violations or new extrema are shown in blue cells.

MSID	08/21/26	08/22/26	08/23/26	08/24/26	08/25/26	08/26/26	08/27/26	yellow limits (lower) upper	red limits (lower) upper	Units	Description
1CRBT	440.86	677.96	393.83	522.43	677.96	482.89		(136.15) 183.15	(131.15) 193.15	K	COLD RADIATOR TEMP. B
1CRBTC	(68.90)	(61.19)	(53.49)	(79.21)	(84.38)	(76.63)		(136.15) 183.15	(131.15) 193.15	C	COLD RADIATOR TEMP. B
AFTBLKHDT		309.07		308.87				(260.2) 303.0	(250.2) 308.0	TEMP	AFT BULKHEAD TEMP
AWD1TQI			(-3.39)		(-3.39)			(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 1 TORQUE CURRENT
AWD6TQI			(-3.47)		(-3.39)			(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 6 TORQUE CURRENT
CTXBPWR	(0.00)	(0.00)	(0.00)	(0.00)	(0.00)		(0.00)	(36.12) 37.0	(36.0) 38.0	DBM	TRANSMITTER B OUTPUT POWER
HRMAAVG		(304.26)	(303.98)	(304.02)	(304.37)			(306.0) 308.0	(305.0) 309.0	K	AVG OF HRMA METRICS
MZOBACONE	313.06	315.56	311.32	315.53	312.45	309.57		(260.2) 303.0	(250.2) 308.0	CONE	-Z SIDE OBA CONE
OBAAVG	304.46		304.69		304.34	302.01		(282.5) 300.0	(281.4) 301.0	K	OBA/TFTE TEMP
OBADIAGRAD	4.31	4.33	4.61	4.17	4.65	4.59		(-1.11) 3.5	(-2.78) 3.9	K	OBA DIAM GRAD
PZOBACONE	308.83	311.61	308.87	311.80	308.83			(260.2) 303.0	(250.2) 308.0	CONE	+Z SIDE OBA CONE
TFTERANGE	48.95		49.00		48.36	48.36		(16.7) 37.5	(11.1) 45.0	K	TFTE VENT/RAD TEMP
TSCTSF3						(268.79)		(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
31452	ACIS-23567	NONE	ACT-CL J0307.0-0628	OK	OK
32501	ACIS-67	HETG	NGC 7213	OK/NA	OK
30447	HRC-I	NONE	G29-38	OK	OK
30408	ACIS-3567	NONE	ClG J0242-2132	OK	OK
32503	HRC-I	NONE	G29-38	OK	OK
32500	ACIS-678	NONE	NGC 7378	OK	OK
29937	ACIS-3678	NONE	NGC 1358	OK	OK
31684	ACIS-0123	NONE	SDSS J014837.63+060020.0	OK	OK
29968	ACIS-67	NONE	SDSS J013341.22-010932.0	OK	OK
32502	ACIS-67	HETG	NGC 7213	OK/NA	OK
30237	ACIS-0123	NONE	[vD2023]1	OK	OK
29816	ACIS-67	NONE	Cassiopeia A	OK	OK
32495	HRC-S	NONE	X-ray blank sky	OK	OK
30214	ACIS-67	NONE	WISE J2246-0526	OK	OK
32511	ACIS-67	NONE	Cassiopeia A	OK	OK
30216	ACIS-67	NONE	WISE J2246-0526	OK	OK
32514	ACIS-67	NONE	SDSS J142314.36+635803.6	OK	OK
30188	ACIS-67	NONE	SDSS J142314.36+635803.6	OK	OK
32496	HRC-S	NONE	RT Cru	OK	OK
30128	ACIS-2367	NONE	SNR G1.9+0.3	OK	OK
30407	ACIS-3567	NONE	ClG J0242-2132	OK	OK
30034	ACIS-567	NONE	ACT-CL J2317.7-3648	OK	OK
30095	ACIS-012367	NONE	[CTC2021] Vela C CR1c1	OK	OK
32497	HRC-S	NONE	2CXO J225932.9+245505	OK	OK
31061	HRC-I	NONE	HD 27406	OK	OK
31998	ACIS-67	NONE	SDSS J022226.11-085701.3	OK	OK
30409	ACIS-3567	NONE	ClG J0242-2132	OK	OK

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
oobthr02	0.401	0.025	(2.87+/-0.21)e2	0.06 +/- 0.03	K	RT 25: HRMA STRUT
oobthr03	0.627	0.017	(2.92+/-0.15)e2	0.07 +/- 0.04	K	RT 26: HRMA STRUT
oobthr04	0.774	0.018	(2.95+/-0.16)e2	0.07 +/- 0.04	K	RT 27: HRMA STRUT
oobthr05	0.764	0.023	(2.96+/-0.21)e2	0.07 +/- 0.04	K	RT 28: HRMA STRUT
oobthr06	0.627	0.019	(2.93+/-0.16)e2	0.07 +/- 0.04	K	RT 29: HRMA STRUT
oobthr07	0.413	0.017	(2.88+/-0.15)e2	0.06 +/- 0.03	K	RT 30: HRMA STRUT
oobthr08	1.015	0.003	(2.95+/-0.08)e2	0.09 +/- 0.06	K	RT 31: OBA CONE
oobthr09	0.791	0.120	(2.95+/-1.02)e2	0.09 +/- 0.06	K	RT 32: OBA CONE
oobthr10	0.794	0.079	(2.94+/-0.67)e2	0.09 +/- 0.05	K	RT 33: OBA CONE
oobthr11	0.917	0.003	(2.92+/-0.08)e2	0.09 +/- 0.05	K	RT 34: OBA CONE
oobthr12	0.909	0.003	(2.93+/-0.08)e2	0.10 +/- 0.05	K	RT 35: OBA CONE
oobthr13	-3.474	2.435	(3.10+/-20.59)e2	0.09 +/- 0.05	K	RT 36: OBA CONE
oobthr14	-1.032	1.099	(3.01+/-9.30)e2	0.09 +/- 0.05	K	RT 37: OBA CONE
oobthr15	0.925	0.003	(2.93+/-0.08)e2	0.09 +/- 0.05	K	RT 38: OBA CONE

HRMA Heaters

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
ohrthr02	-0.003	9.900e-04	(2.95+/-0.01)e2	(3.21+/-9.76)e-5	K	RT 2: HRMA FORWARD APERTURE PLATE
ohrthr03	0.005	1.042e-04	(2.95+/-0.00)e2	0.01 +/- 0.00	K	RT 5: HRMA FORWARD APERTURE PLATE
ohrthr04	-0.004	0.002	(2.95+/-0.02)e2	(1.32+/-7.83)e-5	K	RT 9: HRMA PRECOLLIMATOR PLATE 10
ohrthr05	0.130	9.590e-04	(2.96+/-0.01)e2	0.04 +/- 0.02	K	RT 13: HRMA AFT HEATER PLATE
ohrthr06	0.093	6.010e-04	(2.95+/-0.01)e2	0.03 +/- 0.01	K	RT 14: HRMA MOUNT
ohrthr07	0.100	5.896e-04	(2.95+/-0.01)e2	0.03 +/- 0.01	K	RT 18: HSA OUTER CYLINDER
ohrthr08	0.094	5.814e-04	(2.95+/-0.01)e2	0.03 +/- 0.01	K	RT 103: HRMA CAP
ohrthr09	0.090	5.417e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 105: HRMA CAP
ohrthr10	0.083	4.889e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 107: HRMA P1 FLEXURE
ohrthr11	0.081	4.925e-04	(2.95+/-0.01)e2	0.02 +/- 0.01	K	RT 108: HRMA P4 FLEXURE
ohrthr12	0.104	6.362e-04	(2.95+/-0.01)e2	0.03 +/- 0.01	K	RT 115: HRMA H1 FLEXURE
ohrthr13	0.100	6.072e-04	(2.95+/-0.01)e2	0.03 +/- 0.01	K	RT 116: HRMA H6 FLEXURE
ohrthr14	0.140	7.584e-04	(2.95+/-0.01)e2	0.03 +/- 0.01	K	RT 121: HSA AFT INNER CYLINDER

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

MTA Monitoring Report 08/21/26 - 08/27/26

Radiation

Detrended CTI

ACIS Warm Pixels

ACIS Focal Plane Temperature

SIM Movements

Telemetry

IRUs

Recent Observations

Trending

OBA Heaters

HRMA Heaters