MTA Monitoring Report 05/16/08 - 05/22/08

Archive of monthly reports

Radiation

Quiet.

Detrended CTI

Although we have quoted CTI values of the cleanest data (FT <= -119.7 C, int time > 7000sec), the data fills these conditions are getting rare. From this week, we quote CTI temperature factor corrected ones. The values in the parentheses are CTI based on the cleanest data.

Average of ACIS-I CCDs (MnKa) slope:	1.525e-9 CTI/day	(2.227e-9 CTI/day)
Detrended slope:	7.038e-9 CTI/day	(7.427e-9 CTI/day)

ACIS Warm Pixels

	CCD0	CCD1	CCD2	CCD3	CCD4	CCD5	CCD6	CCD7	CCD8	CCD9
Previously Unknown Bad Pixels
Current Warm Pixels
Flickering Warm Pixels	(153,205)	(427,125) (802,665)	(526,66)	(703,739) (931,553)	(247,364) (227,467)	(233,321) (233,322) (233,323) (233,324) (369,376) (352,544) (258,797) (669,577)	(360,249)	(662,995)	(197,241) (391,982) (881,53)	(636,819)
Current Hot Pixels
Flickering Hot Pixels
Warm column candidates							518		509
Flickering Warm Column Candidates	509	509 514 1021					509 514 1021		509 514 518 1021

ACIS Focal Plane Temperature

For this period 3 peaks are observed.



Day (DOY)	Temp (C)	Width (Days)
138.56	-114.54	0.35
141.20	-114.70	0.29
143.85	-115.02	0.27


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

Telemetry

IRUs

• Gyro Bias Drift
• Gyro Bias Drift Histogram

Recent Observations

Trending

This week's focus is PCAD.

Trends last reported on Feb 21.

Only the most interesting or representative msids are shown below. For a full listing choose the bulletted link.

• ACA Thermal

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
AACBPPT	297.11	1.76	1.135e+00	1.040e-01	K	AC BASEPLATE TEMP (PRIME)
AACBPRT	292.82	1.43	9.267e-01	8.505e-02	K	AC BASEPLATE TEMP (RDNT)
AACCCDRT	292.34	1.55	1.038e+00	6.768e-02	K	AC CCD TEMP (RDNT)
AACH1T	290.14	1.16	7.615e-01	7.690e-02	K	AC HOUSING TEMP (ACH1)
AACH2T	290.19	1.15	7.559e-01	8.540e-02	K	AC HOUSING TEMP (ACH2)
AAOTALT	289.91	1.13	7.646e-01	1.310e-01	K	AC OPT TEL ASSY LENS TEMP
AAOTAPMT	289.35	1.09	7.211e-01	6.740e-02	K	AC OPT TEL ASSY PRIMARY MIRROR TEMP
AAOTASMT	289.51	1.09	7.429e-01	1.223e-01	K	AC OPT TEL ASSY SECONDARY MIRROR TEMP
AAOTH2MT	289.84	1.13	7.675e-01	1.715e-01	K	AC OPT TEL ASSY SECONDARY MIRROR TEMP (HRMA)

• IRU Temperatures and Electron ics

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
AOCSSI2	0.02	1.981e-02	-9.028e-04	-4.984e-04	MAMP	CSSA2 A/D DATA
AOCSSI3	0.01	2.425e-02	-1.551e-03	4.126e-04	MAMP	CSSA3 A/D DATA
AOCSSI4	0.02	2.987e-02	-2.023e-03	6.214e-04	MAMP	CSSA4 A/D DATA

• FTS Temperature and Gradient

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
OHRTHR27	297.12	4.189e-02	-1.411e-03	-5.725e-03	K	RT 20 : PERISCOPE
OHRTHR42	294.13	3.271e-02	1.461e-02	-4.550e-04	K	RT 133: PERISCOPE
OHRTHR43	293.24	0.12	5.731e-02	-2.253e-03	K	RT 134: PERISCOPE
OOBAGRD3	0.83	9.637e-02	-4.471e-02	1.698e-03	K	RT 505 TO RT 504: PERISCOPE GRADIENT
OOBAGRD6	0.04	7.817e-03	2.769e-03	3.173e-04	K	RT 507 TO RT 506: PERISCOPE GRADIENT

• Reaction Wheel Rates

• Drift Rate to Gyros