MTA Monitoring Report 09/18/26 - 09/24/26

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	(786,117)	(910,239)	(803,225) (104,31) (178,149) (99,899) (837,378) (526,66)	(811,637) (21,95)		(849,169)	(335,412)
Flickering Warm Pixels	(171,937)	(427,125) (802,665) (787,181)	(665,25) (726,537)	(680,391) (394,80)	(161,206) (669,577) (369,376) (263,317) (341,427) (357,303) (728,340) (233,227) (282,385) (367,511) (233,102)	(1000,214) (670,387)
Current Hot Pixels
Flickering Hot Pixels
Warm column candidates					1022 512 510		1022 512
Flickering Warm column candidates						804

ACIS Focal Plane Temperature

For this period, 9 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
259.55	-114.86	0.23
259.97	-106.77	0.91
260.79	-110.49	0.34
261.68	-102.22	1.02
262.96	-112.12	0.28
264.10	-105.78	1.50
264.70	-113.71	0.27
265.16	-109.04	0.53
265.75	-113.57	1.17

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	0.00134 s
mission average time/step	0.00132 s

Telemetry

New violations or new extrema are shown in blue cells.

MSID	09/18/26	09/19/26	09/20/26	09/21/26	09/22/26	09/23/26	09/24/26	yellow limits (lower) upper	red limits (lower) upper	Units	Description
1CRBT	440.86	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	(66.33)	(71.48)	(66.33)	(61.19)	(33.03)	(79.21)	(79.21)	(136.15) 183.15	(131.15) 193.15	C	COLD RADIATOR TEMP. B
AWD1TQI	(-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
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)		(0.00)	(36.12) 37.0	(36.0) 38.0	DBM	TRANSMITTER B OUTPUT POWER
IMHBLV							(79.00)	(126.0) 128.0	(125.0) 129.0	(2IMHBLV)	Imaging Bot & Top MCP HV Monitor
IMHVLV							(79.00)	(126.0) 128.0	(125.0) 129.0	(2IMHVLV)	Imaging Bot MCP HV Monitor
MZOBACONE			310.48	310.90	310.05	311.13	313.88	(260.2) 303.0	(250.2) 308.0	CONE	-Z SIDE OBA CONE
OBAAVG			302.04	302.94	302.43	303.35	305.33	(282.5) 300.0	(281.4) 301.0	K	OBA/TFTE TEMP
OBACONEAVG	304.86		307.27	308.39				(282.5) 300.0	(281.8) 301.0	K	OBA CONE AVG TEMP
OBADIAGRAD	4.07	4.70	4.82	4.83	4.91	4.87	4.67	(-1.11) 3.5	(-2.78) 3.9	K	OBA DIAM GRAD
PZOBACONE							310.15	(260.2) 303.0	(250.2) 308.0	CONE	+Z SIDE OBA CONE
TFTERANGE	48.19	46.01	47.69	48.12	47.29	48.21	48.69	(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
33224	ACIS-0123	NONE	MACS J0018.5+1626	OK	OK
29915	ACIS-67	NONE	SDSS J142314.36+635803.6	OK	OK
29938	ACIS-3678	NONE	NGC 1358	OK	OK
33231	ACIS-67	NONE	3CR 17	OK	OK
31389	ACIS-23	NONE	Cas A	OK	OK
32536	ACIS-67	NONE	SN2026sqf	OK	OK
31391	ACIS-67	NONE	Cas A	OK	OK
31390	ACIS-67	NONE	Cas A	OK	OK
30415	ACIS-0123	NONE	MACS J0018.5+1626	OK	OK
33233	ACIS-67	NONE	SN2026sqf	OK	OK
33227	ACIS-0123	NONE	MACS J0018.5+1626	OK	OK
33222	ACIS-67	NONE	SDSS J142314.36+635803.6	OK	OK
33228	ACIS-0123	NONE	MACS J0018.5+1626	OK	OK
33229	ACIS-0123	NONE	MACS J0018.5+1626	OK	OK
33216	ACIS-67	NONE	SDSSJ084755.63+263147.6	OK	OK
33225	ACIS-2367	NONE	SNR G1.9+0.3	OK	OK
33232	ACIS-67	NONE	3CR 17	OK	OK
30051	ACIS-678	NONE	EXO 0748-676	OK	OK
31413	ACIS-23	NONE	Perseus Cluster	OK	OK
31435	ACIS-67	NONE	PG 1700+518	OK	OK
31230	ACIS-67	NONE	SDSS J083721.87+192110.6	OK	OK
31712	ACIS-67	NONE	3CR 17	OK	OK
31414	ACIS-01	NONE	Perseus Cluster	OK	OK
33445	ACIS-2367	NONE	3CR 17	OK	OK
33436	ACIS-678	NONE	EXO 0748-676	OK	OK
31143	HRC-I	NONE	msh 11-62	OK	OK
31744	ACIS-23567	NONE	ACT-CL J0123.5-0428	OK	OK
31415	ACIS-01	NONE	Perseus Cluster	OK	OK
30412	ACIS-0123	NONE	MACS J0018.5+1626	OK	OK
31345	ACIS-2367	NONE	V4641 Sgr S1	OK	OK
31416	ACIS-23	NONE	Perseus Cluster	OK	OK
33441	HRC-I	NONE	msh 11-62	OK	OK
33446	ACIS-567	NONE	ACT-CL J0123.5-0428	OK	OK

MSID	Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
2ceahvpt	-0.487	0.008	(2.94+/-0.08)e2	-0.08 +/- 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	-0.469	0.009	(2.86+/-0.09)e2	-0.09 +/- 0.06	K	CONDUIT -X FACE TEMPERATURE
2dcentrt	-0.421	0.007	(2.87+/-0.07)e2	-0.05 +/- 0.07	K	DETECTOR HOUSING TEMP 2
2dtstatt	-0.563	0.009	(2.86+/-0.09)e2	-0.02 +/- 0.06	K	DETECTOR HOUSING TEMP 1
2fhtrmzt	-0.753	0.011	(2.87+/-0.11)e2	-0.07 +/- 0.07	K	FRONT END ELECTRONICS BOX TEMPERATURE
2fradpyt	-0.683	0.011	(2.83+/-0.11)e2	-0.08 +/- 0.07	K	FRONT END ASSEMBLY +Y AT RADIATOR CENTER TEMP
2pmt1t	-0.072	0.005	(2.90+/-0.05)e2	-0.08 +/- 0.08	K	PMT 1 TEMPERATURE
2pmt2t	-0.118	0.006	(2.92+/-0.05)e2	-0.06 +/- 0.09	K	PMT 2 TEMPERATURE
2uvlspxt	-0.263	0.006	(2.84+/-0.05)e2	-0.03 +/- 0.07	K	UV LIGHT SHIELD NEXT TO SNOUT TEMP

HRC Housekeeping

MSID		Mean	RMS	Delta/Yr	Delta/Yr/Yr	Unit	Description
2fe00atm		-0.150	0.008	18.40 +/- 5.88	-0.06 +/- 0.06	C	Front end temperature
2fepratm	off	-5.171	0.099	8.06 +/- 12.36	0.04 +/- 1.02	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	-3.717	0.073	8.19 +/- 8.95	-0.20 +/- 0.72	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	0.179	0.004	25.75 +/- 2.65	-0.11 +/- 0.07	C	LVPS plate temperature
2prbscr	off	-0.005	6.907e-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	4.924e-04	28.02 +/- 0.93	(9.22+/-417.70)e-5	V	Primary bus voltage

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

MTA Monitoring Report 09/18/26 - 09/24/26

Radiation

Detrended CTI

ACIS Warm Pixels

ACIS Focal Plane Temperature

SIM Movements

Telemetry

IRUs

Recent Observations

Trending

HRC Thermal

HRC Housekeeping