MTA Monitoring Report 01/13/12 - 01/19/12

Archive of all weekly reports
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. We quote CTI temperature factor corrected ones. The values in the parentheses are CTI based on the cleanest data.

ACIS Warm Pixels

We display all bad pixels 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 a computational artificial effect due to boundaries.

ACIS Focal Plane Temperature

For this period, 4 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
14.56	-118.09	0.48
15.58	-105.84	0.21
16.97	-117.12	0.94
19.96	-118.09	0.55

Weekly focal plane temperature with sun angle and altitude overplotted. Sun angle is the solar array angle, that is the angle between the sun and the optical axis (+X axis). Altitude varies from 5 kkm to 145 kkm.

SIM Movements

10 TSC moves this period

weekly average time/step	0.00133 s
mission average time/step	0.00133 s

Telemetry

New violations or new extrema are shown in blue cells.
Limits are MTA operational limits based on the observed values seen between Jan 2009 and Jan 2011.

IRUs

• Gyro Bias Drift
• Gyro Bias Drift Histogram

Recent Observations

Trending

This week's focus is Ground Computations. .

Last reported on Oct 20.

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

Min/max envelopes in dark blue appear on the trending plots. The envelopes are 4th degree fits to the monthly minimum and maximum values for each MSID. The final polynomial form and binning are still being experimented with. We will soon add to the trending pages a report of the fits and predictions they give on future limit violations. The light blue curve is our original smoothing of all the data over 30 day moving boxcars. The green/yellow line is a linear fit to all the data; the break occurs at a limit change.

• HRMA Computed Averages

Computed HRMA Gradients
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
AFTBLKHDT	284.28	1.34	1.533e-01	1.436e-01	TEMP	AFT BULKHEAD
FWBLKHDT	284.72	1.12	3.089e-01	1.115e-01	TEMP	FORWARD BULKHEAD
HRMAAVG	307.01	4.339e-02	5.387e-03	4.672e-03	K	AVG OF HRMA METRICS
HRMACAV	294.13	1.043e-02	2.415e-03	2.749e-03	TEMP	HRMA CAVITY AVG
HRMARADGRD	-0.07	6.848e-03	-1.632e-03	-4.274e-04	GRAD	HRMA RADIAL
HRMARANGE	3.06	1.695e-02	2.259e-03	2.051e-03	K	HRMA TOTAL TEMP RANGE
HRMASTRUTRNGE	5.40	0.76	2.496e-01	3.362e-02	K	HRMA STRUT TEMP
HRMAXGRD	0.09	7.408e-03	-1.925e-03	-5.574e-04	GRAD	HRMA AXIAL
MZOBACONE	286.38	1.87	4.496e-01	1.622e-01	CONE	-Z SIDE OBA
OBAAVG	284.97	1.20	3.216e-01	1.204e-01	K	OBA/TFTE TEMP
OBAAXGRD	0.43	1.27	1.540e-01	-3.765e-02	K	OBA AXIAL GRAD
OBACONEAVG	285.42	1.56	4.294e-01	1.551e-01	K	OBA CONE AVG TEMP
OBADIAGRAD	1.85	0.63	4.466e-02	2.352e-02	K	OBA DIAM GRAD
PZOBACONE	284.56	1.50	3.989e-01	1.498e-01	CONE	+Z SIDE OBA
SCSTRUTRNGE	5.07	2.16	6.514e-01	1.338e-01	K	SC STRUT TEMP
TFTERANGE	30.47	1.10	3.050e-01	9.547e+00	K	TFTE VENT/RAD TEMP

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