MTA Monitoring Report 06/24/11 - 06/30/11

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, 3 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
176.76	-118.22	0.47
179.33	-116.80	1.22
179.87	-117.93	0.52

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

12 TSC moves this period

weekly average time/step	0.00124 s
mission average time/step	0.00134 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 Apr 07.

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. Attitude
MSID	MEAN	RMS	DELTA/DEG	DELTA/DEG/DEG	UNITS	DESCRIPTION
1CRAT	145.91	1.36	9.969e-03	NaN	K	COLD RADIATOR TEMP. A
1CRBT	146.40	1.62	0.02	0.00	K	COLD RADIATOR TEMP. B
1DACTBT	257.54	1.72	-5.068e-03	NaN	K	DA COLLIMATOR TEMP. B
1DPAMZT	287.99	3.48	0.05	NaN	K	DPA -Z PANEL TEMP
1OAHAT	243.66	1.60	-8.694e-05	NaN	K	OPEN ACTUATOR HOUSING TEMP. A

• ACIS Thermal

vs. Attitude Previous Quarter
MSID	MEAN	RMS	DELTA/DEG	DELTA/DEG/DEG	UNITS	DESCRIPTION
1CRAT	146.73	1.99	7.731e-03	6.468e-04	K	COLD RADIATOR TEMP. A
1CRBT	147.32	2.06	0.01	0.00	K	COLD RADIATOR TEMP. B
1DACTBT	256.35	1.54	6.445e-03	3.405e-05	K	DA COLLIMATOR TEMP. B
1DPAMZT	293.33	6.24	0.12	0.00	K	DPA -Z PANEL TEMP
1OAHAT	242.33	1.79	0.02	0.00	K	OPEN ACTUATOR HOUSING TEMP. A

• EPHIN Temperature

vs. Attitude
MSID	MEAN	RMS	DELTA/DEG	DELTA/DEG/DEG	UNITS	DESCRIPTION
5EIOT	334.24	15.46	-0.28	-0.01	K	EIO TEMP
5EPHINT	303.30	12.67	0.01	-0.00	K	EPHIN TEMP
HKEBOXTEMP	308.16	12.46	2.395e-03	-1.378e-03	K	EPHIN HOUSEKEEPING EBOX: TEMPERATURE (5EHSE300)
TEIO	305.24	18.10	-0.33	-0.01	K	EPHIN ELECTRONICS HOUSING TEMP
TEPHIN	303.34	12.78	-0.02	-0.00	K	EPHIN SENSOR HOUSING TEMP

• EPHIN Temperature

vs. Attitude Previous Quarter
MSID	MEAN	RMS	DELTA/DEG	DELTA/DEG/DEG	UNITS	DESCRIPTION
5EIOT	337.42	16.28	-0.40	-0.02	K	EIO TEMP
5EPHINT	317.31	5.08	-0.03	-0.01	K	EPHIN TEMP
HKEBOXTEMP	321.72	5.28	-0.04	-0.01	K	EPHIN HOUSEKEEPING EBOX: TEMPERATURE (5EHSE300)
TEIO	309.84	18.76	-0.47	-0.03	K	EPHIN ELECTRONICS HOUSING TEMP
TEPHIN	316.97	5.45	-0.05	-0.01	K	EPHIN SENSOR HOUSING TEMP

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