MTA Monitoring Report 10/14/11 - 10/27/11

Archive of all weekly reports
Archive of monthly reports

Radiation

SCS107 was manually executed on 2011:297:18:30z due to high radiation.
ACIS orbital fluence: 3.9917e+09 p/cm^2-sr-Mev. Lost science time: 61.1 ks.

SCS107 was executed automatically on 2011:299:04:58z due to a single event
upset (SEU) in the telemetry processor of the Command and Telemetry Unit.
Lost science time: 154.0 ks.

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)
295.93	-101.89	0.66
298.58	-102.62	0.22

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

8 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.

IRUs

• Gyro Bias Drift
• Gyro Bias Drift Histogram

Recent Observations

Trending

This week's focus is EPHIN.

Last reported on Aug 04.

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.

• EPHIN Temperatures and Voltages

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
5EPHINT	318.27	5.15	1.133e-01	2.044e+01	K	EPHIN TEMP
HKEBOXTEMP	322.71	5.41	6.548e-03	2.951e+01	K	EPHIN HOUSEKEEPING EBOX: TEMPERATURE (5EHSE300)
HKGHV	579.08	4.082e+02	-1.001e+02	-3.279e+00		HKGHV
HKN6I	82.17	10.48	-2.634e+00	-3.994e-01	AMP	HK 6 Volts Rail - Current
HKN6V	-5.97	3.294e-02	-6.498e-03	-1.340e-03	V	HK -6 Volts Rail - Voltage
HKP27I	6.85	0.81	1.763e-01	-2.465e-03	AMP	HK 27 Volts Rail - Current
HKP27V	25.01	4.58	-1.772e-01	-1.791e-02	V	HK 27 Volts Rail - Voltage
HKP5I	41.54	2.77	-4.451e-02	-4.970e-02	AMP	HK 5 Volts Rail - Current
HKP5V	5.11	1.651e-02	-1.116e-03	8.472e-04	V	HK 5 Volts Rail - Voltage
HKP6I	142.17	6.71	-1.736e+00	-2.626e-01	AMP	HK 6 Volts Rail - Current
HKP6V	5.80	1.788e-02	2.589e-03	4.905e-04	V	HK 6 Volts Rail - Voltage
TEIO	312.35	20.41	2.347e+00	2.239e+02	K	EPHIN ELECTRONICS HOUSING TEMP
TEPHIN	318.06	5.67	2.133e-01	4.593e+01	K	EPHIN SENSOR HOUSING TEMP



• EPHIN Temperatures and Voltages - Previous Quarter

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
5EPHINT	318.34	4.81	-4.212e+00	-1.959e+01	K	EPHIN TEMP
HKEBOXTEMP	322.77	5.02	-4.073e+00	9.701e+00	K	EPHIN HOUSEKEEPING EBOX: TEMPERATURE (5EHSE300)
TEIO	310.08	18.83	-1.324e+01	7.207e+02	K	EPHIN ELECTRONICS HOUSING TEMP
TEPHIN	317.97	5.20	-3.731e+00	2.928e+01	K	EPHIN SENSOR HOUSING TEMP

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