MTA Monitoring Report 01/03/14 - 01/09/14

Archive of all weekly reports
Archive of monthly reports

Radiation

In the early part of Jan 7, the ACE P3 flux was about 12k and declining with a half-life of about 2 hrs, except for a bump in the last 20 min. The other ACE Proton channels show similar behavior: declining except for the bump. In the later in the day, SCS-107 ran at Jan 7, 20:39UTC, and a science observation was interruptted. As of Jan 9, morning, hard-proton radiation is still high, but dropping.

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)
3.33	-116.70	0.48
4.00	-114.38	0.16
6.64	-106.25	1.76
9.27	-109.85	0.19

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	0.00127 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 Sun Angle Correlations.

Last reported on Oct 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 Thermal

vs. Sun Angle
MSID	MEAN	RMS	DELTA/DEG	DELTA/DEG/DEG	UNITS	DESCRIPTION
1CBAT	208.36	3.19	5.214e-03	-NaN	K	CAMERA BODY TEMP. A
1CBBT	210.05	4.06	3.390e-03	-NaN	K	CAMERA BODY TEMP. B
1CRAT	145.99	1.51	0.01	-NaN	K	COLD RADIATOR TEMP. A
1CRBT	146.59	1.88	0.02	-0.00	K	COLD RADIATOR TEMP. B
1DACTBT	257.41	1.89	-3.269e-03	-NaN	K	DA COLLIMATOR TEMP. B
1DEAMZT	283.95	4.46	0.06	-NaN	K	DEA -Z PANEL TEMP
1DPAMYT	285.34	4.81	0.08	-NaN	K	DPA -Y PANEL TEMP
1DPAMZT	288.61	4.47	0.07	-NaN	K	DPA -Z PANEL TEMP
1OAHAT	243.50	1.72	3.345e-03	-NaN	K	OPEN ACTUATOR HOUSING TEMP. A
1OAHBT	240.01	1.72	1.408e-03	-NaN	K	OPEN ACTUATOR HOUSING TEMP. B
1PDEAAT	304.49	7.78	-0.08	-NaN	K	PSMC DEA PS A TEMP
1PDEABT	295.79	7.59	-0.07	-NaN	K	PSMC DEA PS B TEMP
1PIN1AT	290.66	6.94	-0.06	-NaN	K	PSMC TEMP 1A
1WRAT	190.05	2.15	0.01	-0.00	K	WARM RADIATOR TEMP. A
1WRBT	189.87	2.16	0.01	-0.00	K	WARM RADIATOR TEMP. B

• SIM Thermal

vs. Sun Angle
MSID	MEAN	RMS	DELTA/DEG	DELTA/DEG/DEG	UNITS	DESCRIPTION
3BTU_BPT	263.78	8.29	-0.09	0.01	K	BTU BASEPLATE (+X)), ABORT HTR TSC2
3TTHRC1T	267.93	11.87	-0.20	0.01	K	TT AT HRC BIPOD ATTACH #1
3TTHRC2T	272.64	11.56	-0.20	0.01	K	TT AT HRC BIPOD ATTACH #2
3TTHRC3T	267.10	3.08	-0.03	0.00	K	TT AT HRC BIPOD ATTACH #3 & ACIS #4
FAMTRTEMP	277.53	4.84	-0.02	0.00	K	FA motor temperature
PSUTEMP	316.37	3.12	-6.399e-03	2.348e-04	K	SEA power supply temperature (3FAPSAT)
TSCMTRTEMP	276.74	18.59	-0.34	0.01	K	TSC motor temperature

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