MTA Monitoring Report 12/11/09 - 12/17/09

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, 2 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
346.36	-105.95	0.31
348.97	-111.79	0.30
351.62	-109.74	0.35

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

13 TSC moves this period

weekly average time/step	0.00136 s
mission average time/step	0.00134 s

Telemetry

New violations or new extrema are shown in blue cells.

Pitch Angle and System Temperature

This is a test implementation, not all #'s have been verified.
On the weekly plots, long green ticks indicate obsid starts. The shorter orange ticks indicate rad zone events.

The following table shows the maximum temperature (in K) appeared during the observations. All data are taken between Nov 30 and Dec 06, 2009- DOY 334-340.

Pitch Angle	45 - 60	60 - 75	75 - 90	90 - 110	110 - 130	130 - 145
TFSSBKT1	351.0			350.3	347.7	345.3
TFSSBKT2	353.4			350.0	346.6	341.6
TEPHIN	320.2			319.9	320.2	320.2
TEIO	337.1			338.5	337.1	335.9
5EPHINT	318.9			318.9	319.8	321.1
HKEBOXTEMP	323.6			322.7	323.6	325.1
OHRTHR38	289.2			289.1	289.1	289.1
4RT568T	287.7			287.7	287.7	287.7
4PRT4AT	216.5			218.2	218.2	218.2
OOBTHR06	287.8			287.9	287.9	287.9
4RT583T	287.5			287.5	287.5	287.5
4RT586T	288.0			288.2	288.2	288.2
PLINE01T *	285.9			285.9	285.5	285.5
PLINE02T *	312.9			287.1	287.6	287.8
PLINE03T *	313.4			287.6	287.6	287.6

* PLINE temperatures are weekly minimum temps.

IRUs

• Gyro Bias Drift
• Gyro Bias Drift Histogram

Recent Observations

Trending

This week's focus is Ground Computations.

Last reported on Sep 24.

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.

• ACIS Power

Computed ACIS Electronics
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
1DPPWRA	40.20	1.49	-3.867e-01	-4.772e-02	W	DPA POWER A
1DPPWRB	35.14	0.87	-1.218e-01	-5.436e-03	W	DPA P WER B

• HRMA Computed Averages

Computed HRMA Gradients
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
FWBLKHDT	284.31	0.69	2.385e-01	2.413e-02	TEMP	FORWARD BULKHEAD
HRMARADGRD	-0.07	5.362e-03	-1.281e-03	-1.149e-06	GRAD	HRMA RADIAL
OBAAVG	284.57	0.80	2.671e-01	5.469e-03	K	OBA/TFTE TEMP
OBACONEAVG	284.89	1.04	3.550e-01	1.036e-02	K	OBA CONE AVG TEMP
PZOBACONE	284.08	1.01	3.337e-01	9.049e-03	CONE	+Z SIDE OBA
SCSTRUTRNGE	4.32	1.62	5.780e-01	-7.735e-02	K	SC STRUT TEMP
TFTERANGE	28.42	1.05	4.471e-01	-9.091e-02	K	TFTE VENT/RAD TEMP

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