MTA Monitoring Report 01/18/13 - 01/24/13

Archive of all weekly reports
Archive of monthly reports

Radiation

There were a couple of "ACE p3 scaled" warnings in this period (0/18/13 and 01/22/13)

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)
19.87	-108.55	0.32
21.57	-117.77	0.36
22.50	-110.98	0.51
23.62	-116.64	0.73

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

7 TSC moves this period

weekly average time/step	0.00134 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 Spacecraft Bus and Subsystem Trends.

Last reported on Nov 01.

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.

• S/C Ancillary Temperatures

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
TATECDRT	286.06	0.85	5.952e-01	7.465e-01	K	TEC DRIVER RDNT TEMP
TCNR_BRM	281.17	8.22	-5.851e+00	8.566e-01	K	-Y/+Z PANEL CORNER PANEL TEMP (BRM)
TFSSBKT1	330.07	20.01	7.355e+00	8.148e+01	K	FSS BRACKET-1 TEMP (+Y)
TFSSBKT2	322.04	28.30	9.770e+00	1.067e+02	K	FSS BRACKET-2 TEMP (+Y)

• S/C Ancillary Temperatures - Previous Quarter

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
TATECDRT	287.50	0.82	4.182e+00	6.160e+01	K	TEC DRIVER RDNT TEMP
TCNR_BRM	275.10	1.94	-1.382e+01	2.340e+02	K	-Y/+Z PANEL CORNER PANEL TEMP (BRM)
TFSSBKT1	335.07	21.90	-5.798e+00	1.499e+03	K	FSS BRACKET-1 TEMP (+Y)
TFSSBKT2	328.22	30.25	-1.784e+01	2.107e+03	K	FSS BRACKET-2 TEMP (+Y)

• S/C Electronics

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
OHRMAPWR	58.87	2.03	-6.199e-01	-1.515e+00	W	HRMA COMPUTED TOTAL POWER
OOBAPWR	51.84	5.91	-1.565e+00	-5.988e-01	W	OBA COMPUTED TOTAL POWER

• S/C Electronics

Previous Quarter
MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
OHRMAPWR	58.41	2.47	-4.175e+00	-3.099e+02	W	HRMA COMPUTED TOTAL POWER
OOBAPWR	49.88	3.13	1.160e+01	-4.131e+02	W	OBA COMPUTED TOTAL POWER

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