MTA Monitoring Report 04/17/26 - 04/23/26

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			(803,225) (178,149) (526,66) (104,31) (665,25) (99,899)	(680,391) (21,95)		(849,169) (884,31)	(335,412)	(275,393) (182,474) (541,41) (447,769) (597,187) (139,109) (295,978) (136,65)
Flickering Warm Pixels	(786,117) (283,278)	(910,239) (802,665) (427,125)	(726,537) (837,378) (353,201)	(318,53) (811,637) (394,80) (617,159)	(233,102) (877,408) (263,317) (161,206) (728,340) (369,376) (282,385) (357,303) (367,511)	(670,387) (357,29) (414,5) (80,130) (1000,214)	(126,856)	(220,813) (881,53) (666,165) (332,324) (893,490) (333,466) (838,239) (326,978) (675,304)
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, 4 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
105.41	-107.25	0.31
108.55	-101.25	3.85
110.66	-107.73	1.13
111.75	-110.29	0.45

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

14 TSC moves this period

weekly average time/step	0.00131 s
mission average time/step	0.00132 s

Telemetry

New violations or new extrema are shown in blue cells.

MSID	04/17/26	04/18/26	04/19/26	04/20/26	04/21/26	04/22/26	04/23/26	yellow limits (lower) upper	red limits (lower) upper	Units	Description
1CRBT	677.96	677.96			677.96		677.96	(136.15) 183.15	(131.15) 193.15	K	COLD RADIATOR TEMP. B
1CRBTC	(68.90)	(66.33)			(84.38)		(86.96)	(136.15) 183.15	(131.15) 193.15	C	COLD RADIATOR TEMP. B
AFTBLKHDT						309.76		(260.2) 303.0	(250.2) 308.0	TEMP	AFT BULKHEAD TEMP
AWD1TQI				(-3.39)			(-3.35)	(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 1 TORQUE CURRENT
AWD3TQI	(-3.39)						(-3.31)	(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 3 TORQUE CURRENT
AWD4TQI	(-3.43)						(-3.43)	(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 4 TORQUE CURRENT
AWD6TQI		(-3.43)		(-3.43)			(-3.43)	(-1.22) 1.22	(-3.3) 3.3	AMP	WHEEL 6 TORQUE CURRENT
CALPALV	(0.00)		(124.00)					(126.0) 128.0	(125.0) 129.0	V	Cal Pulser Amplitude
CTXBPWR	(0.00)	(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
IMHBLV							(0.00)	(126.0) 128.0	(125.0) 129.0	(2IMHBLV)	Imaging Bot & Top MCP HV Monitor
IMHVLV							(0.00)	(126.0) 128.0	(125.0) 129.0	(2IMHVLV)	Imaging Bot MCP HV Monitor
MZOBACONE	308.90	309.54	312.09	314.21	309.95		311.97	(260.2) 303.0	(250.2) 308.0	CONE	-Z SIDE OBA CONE
OBAAVG	302.22	302.89	303.62		301.95		303.86	(282.5) 300.0	(281.4) 301.0	K	OBA/TFTE TEMP
OBADIAGRAD	4.11	4.78	4.43	4.63	4.87	4.33	4.69	(-1.11) 3.5	(-2.78) 3.9	K	OBA DIAM GRAD
PZOBACONE				309.95		312.07		(260.2) 303.0	(250.2) 308.0	CONE	+Z SIDE OBA CONE
TFTERANGE	48.84	49.04		48.28	46.95		47.66	(16.7) 37.5	(11.1) 45.0	K	TFTE VENT/RAD TEMP
TSCTSF3					(268.79)	(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
30543	HRC-I	NONE	SN 2012au	OK	OK
31223	ACIS-67	NONE	NGC 6099	OK	OK
32300	ACIS-67	NONE	NGC 6099	OK	OK
32294	ACIS-5678	HETG	TV Cassiopeia	OK/NA	OK
32297	ACIS-67	NONE	SDSS J123733.69+085255.7	OK	OK
30250	ACIS-0123	NONE	Center of COSMOS-Web	OK	OK
32305	ACIS-67	NONE	LEDA 184063	OK	OK
32296	ACIS-3678	NONE	AM0425-421	OK	OK
32299	HRC-I	NONE	SN 2012au	OK	OK
30259	ACIS-0123	NONE	Center of COSMOS-Web	OK	OK
32292	ACIS-5678	NONE	2MASX J07042579+4214134	OK	OK
30257	ACIS-0123	NONE	Center of COSMOS-Web	OK	OK
32298	ACIS-67	NONE	SDSS J123733.69+085255.7	OK	OK
31419	ACIS-01236	NONE	Abell 2319	OK	OK
32306	ACIS-678	NONE	GRB260310A	OK	OK
29878	ACIS-2567	NONE	SDSS J141525.26+045602.5	OK	OK
29880	ACIS-2567	NONE	SDSS J091934.51+481614.8	OK	OK
30180	ACIS-3678	NONE	NGC4941	OK	OK
30026	ACIS-01237	NONE	DESI J090.9854-35.9683	OK	OK
31864	ACIS-67	HETG	NGC 2110	OK/NA	OK
32311	ACIS-2567	NONE	SDSS J091934.51+481614.8	OK	OK
29863	ACIS-3678	NONE	AM1724-622	OK	OK
32309	ACIS-2567	NONE	SDSS J141525.26+045602.5	OK	OK
32310	ACIS-2567	NONE	SDSS J141525.26+045602.5	OK	OK
31516	HRC-I	HETG	Cyg X-2	OK/NA	OK
31399	ACIS-56789	LETG	MKN421	OK/NA	OK

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
2ceahvpt	-0.452	0.009	(2.94+/-0.08)e2	-0.09 +/- 0.07	K	CEA RADIATOR TEMPERATURE AT CENTER
2chtrpzt	0.311	0.004	(2.94+/-0.03)e2	-0.05 +/- 0.10	K	CENTRAL ELECTRONICS BOX TEMP
2condmxt	-0.431	0.009	(2.86+/-0.08)e2	-0.10 +/- 0.07	K	CONDUIT -X FACE TEMPERATURE
2dcentrt	-0.390	0.008	(2.87+/-0.07)e2	-0.05 +/- 0.07	K	DETECTOR HOUSING TEMP 2
2dtstatt	-0.525	0.009	(2.87+/-0.09)e2	-0.04 +/- 0.06	K	DETECTOR HOUSING TEMP 1
2fhtrmzt	-0.706	0.012	(2.87+/-0.11)e2	-0.08 +/- 0.07	K	FRONT END ELECTRONICS BOX TEMPERATURE
2fradpyt	-0.639	0.011	(2.83+/-0.10)e2	-0.09 +/- 0.07	K	FRONT END ASSEMBLY +Y AT RADIATOR CENTER TEMP
2pmt1t	-0.053	0.005	(2.90+/-0.04)e2	-0.09 +/- 0.09	K	PMT 1 TEMPERATURE
2pmt2t	-0.094	0.006	(2.92+/-0.05)e2	-0.07 +/- 0.09	K	PMT 2 TEMPERATURE
2uvlspxt	-0.242	0.006	(2.84+/-0.05)e2	-0.03 +/- 0.08	K	UV LIGHT SHIELD NEXT TO SNOUT TEMP

HRC Housekeeping

MSID		Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
2fe00atm		-0.125	0.008	18.50 +/- 5.70	-0.06 +/- 0.06	C	Front end temperature
2fepratm	off	-5.411	0.104	8.54 +/- 12.43	0.16 +/- 1.11	C	FE temp card temperature
	on	0.279	0.003	22.04 +/- 2.64	-0.14 +/- 0.08	C	FE temp card temperature
2iminatm	off	-3.930	0.076	8.49 +/- 9.04	-0.48 +/- 0.80	C	Imaging det temperature
	on	0.237	0.004	16.73 +/- 2.76	-0.06 +/- 0.10	C	Imaging det temperature
2lvplatm	off	-3.792	0.072	17.08 +/- 8.57	-0.69 +/- 0.73	C	LVPS plate temperature
	on	0.217	0.003	25.84 +/- 2.39	-0.12 +/- 0.07	C	LVPS plate temperature
2prbscr	off	-0.005	7.495e-04	1.73 +/- 0.05	-0.03 +/- 0.03	AMP	Primary bus current
	on	-8.701e-04	8.346e-05	1.60 +/- 0.05	(1.91+/-14.58)e-4	AMP	Primary bus current
2prbsvl		-0.117	4.980e-04	28.03 +/- 0.92	-(7.78+/-42.25)e-4	V	Primary bus voltage

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

MTA Monitoring Report 04/17/26 - 04/23/26

Radiation

Detrended CTI

ACIS Warm Pixels

ACIS Focal Plane Temperature

SIM Movements

Telemetry

IRUs

Recent Observations

Trending

HRC Thermal

HRC Housekeeping