MTA Monitoring Report 02/12/10 - 02/18/10

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)
44.79	-111.30	0.23
45.45	-119.06	0.09
47.52	-112.08	0.25
50.12	-99.13	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 in the roll and pitch planes. Altitude varies from 34 kkm to 128 kkm.

SIM Movements

12 TSC moves this period

weekly average time/step	0.00135 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 Feb 08 and Feb 14, 2010- DOY 039-045.

Pitch Angle	45 - 60	60 - 75	75 - 90	90 - 110	110 - 130	130 - 145
TFSSBKT1	353.4		353.4			343.2
TFSSBKT2	355.8		353.4			341.4
TEPHIN	321.3		321.3			321.3
TEIO	340.2		340.2			337.6
5EPHINT	319.4		319.4			321.6
HKEBOXTEMP	324.3		323.6			325.8
OHRTHR38	289.7		289.7			289.7
4RT568T	288.3		288.3			288.3
4PRT4AT	216.5		216.5			216.5
OOBTHR06	288.2		288.3			288.3
4RT583T	287.7		288.0			288.0
4RT586T	288.2		288.5			288.5
PLINE01T *	285.5		285.5			287.1
PLINE02T *	302.7		298.9			300.7
PLINE03T *	298.6		294.5			297.3

* PLINE temperatures are weekly minimum temps.

IRUs

• Gyro Bias Drift
• Gyro Bias Drift Histogram

Recent Observations

Trending

This week's focus is Gratings.

Last reported on Nov 26.

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.

• Gratings

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
4HPOSARO	66.68	27.95	-7.531e-01	1.241e+00	deg	HETG pot. angle (side A)
4HPOSBRO	67.24	28.23	-7.417e-01	1.252e+00	deg	HETG pot. angle (side B)
4LPOSARO	71.00	22.37	-9.847e-01	1.806e-01	deg	LETG pot. angle (side A)
4LPOSBRO	70.06	22.71	-9.263e-01	1.542e-01	deg	LETG pot. angle (side B)
Gratings In Motion
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
4MP28AV	0.46	0.16	1.106e-03	6.578e-02	VDC	MCE A: +28 VOLT MONITOR
4MP28BV	2.21	0.74	3.008e-03	7.262e-01	VDC	MCE B: +28 VOLT MONITOR
4MP5AV	0.54	0.17	-2.178e-03	3.107e-01	VDC	MCE A: +5 VOLT MONITOR
4MP5BV	0.40	0.13	6.135e-04	1.392e-01	VDC	MCE B: +5 VOLT MONITOR

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