MTA Monitoring Report 02/02/18 - 02/08/18

Archive of all weekly reports
Archive of monthly reports

Radiation

Quiet

Detrended CTI

Although we prefer to quote CTI values of the cleanest data (FT <= -119.7 C, int time > 7000sec), the data that fulfills these conditions are getting rare. We now quote CTI based on temperature corrected data for Focal plane temperature <= -118.5 C).

The unit is now CTI/year not CTI/day.

ACIS Warm Pixels

We display all bad pixels that have 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 boundaries.

New definitions of warm pixels and flickering pixels (May 15, 2014). If a pixel displays the level beyond a threshold for more than 70% of the time in the past two weeks, the pixel is categorized as a "warm" pixel. If a pixel is above the threshold more than 30% of time but less than 70% of the time in the past two weeks, the pixel is categorized as a "flickering" pixel.

ACIS Focal Plane Temperature

For this period, 7 peaks are observed.

Day (DOY)	Temp (C)	Width (Days)
033.53	-115.91	0.51
034.54	-112.77	0.52
035.23	-114.27	0.68
036.37	-113.18	1.43
037.37	-113.48	0.84
038.27	-115.03	0.66
038.85	-114.99	0.74

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

17 TSC moves this period

weekly average time/step	0.00140 s
mission average time/step	0.00136 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 SIM

Last reported on Nov 16.

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.

• SIM Thermal

MSID	MEAN	RMS	DELTA/YR	DELTA/YR/YR	UNITS	DESCRIPTION
3BTU_BPT	267.38	7.17	1.535e+00	5.531e-01	K	BTU BASEPLATE (+X)), ABORT HTR TSC2
3FABRAAT	264.35	2.97	9.234e-01	-2.175e-01	K	FA STRUCTURE AT BEARING A ABORT HTR. FA6 TEMP
3FABRCAT	272.44	6.80	1.443e+00	-3.809e-02	K	FA STRUCTURE AT BEARING C ABORT HTR. FA6 TEMP
3FAMYZAT	271.52	8.62	1.447e+00	-5.793e-01	K	FA STRUCTURE +X FACE AT -Y-Z END ABORT HTR. FA6 TEMP
3FAPYZAT	269.55	3.31	9.879e-01	1.317e-01	K	FA STRUCTURE +X FACE AT +Y+Z END ABORT HTR. FA6 TEMP
3FARALAT	268.64	11.12	1.392e+00	-9.796e-01	K	FA STRUCTURE AT RAIL -Z, ABORT HEATER FA6 TEMP
3FLCABPT	285.84	5.10	5.752e-01	-2.636e-01	K	FLCA BASEPLATE (+X)
3RCTUBPT	275.79	9.11	1.901e+00	7.870e-01	K	RCTU BASEPLATE (+X)
3TSMXCET	247.56	3.606e+01	4.248e+00	1.430e+01	K	-X TURTLE SHELL NR HRC CEA
3TSMXSPT	287.06	3.269e+01	3.470e+00	1.109e+01	K	-X TURTLE SHELL NR ACIS SS
3TSMYDPT	241.96	14.29	1.587e+00	3.679e+00	K	-Y TURTLE SHELL NR ACIS DPA
3TSPYFET	237.80	7.41	1.122e+00	2.820e+00	K	+Y TURTLE SHELL NR HRC FEA
3TSPZDET	272.31	10.55	3.040e-01	1.744e+00	K	+Z TURTLE SHELL NR ACIS DEA
3TSPZSPT	276.96	9.48	6.715e-01	9.721e-01	K	+Z TURTLE SHELL NR ACIS SS
3TTACS1T	266.43	2.60	6.715e-01	1.107e+00	K	TT AT ACIS ATTACH #1, ABORT HTR
3TTACS2T	266.20	3.74	3.910e-01	1.160e+00	K	TT AT ACIS ATTACH #2, ABORT HTR TSC1
3TTACS3T	262.91	1.85	2.697e-01	8.868e-01	K	TT AT ACIS ATTACH #3, ABORT HTR TSC1
3TTBRGBT	258.25	10.76	6.719e-01	5.231e-01	K	TT AT BEARING B, ABORT HTR TSC4
3TTHRC1T	267.09	11.38	4.064e-01	-1.783e-01	K	TT AT HRC BIPOD ATTACH #1
3TTHRC2T	272.00	11.46	4.401e-01	7.670e-01	K	TT AT HRC BIPOD ATTACH #2
3TTHRC3T	268.34	2.82	5.738e-01	1.063e+00	K	TT AT HRC BIPOD ATTACH #3 & ACIS #4
3TTRALAT	248.35	7.58	-2.616e-01	2.052e+00	K	TT AT RAIL A, ABORT HTR TSC3
3TTRALCT	265.82	4.69	5.399e-01	1.382e+00	K	TT AT RAIL C, ABORT HTR TSC5
3TTVALVT	257.28	12.13	4.378e-02	2.339e+00	K	TT AT VENT VALVE, ABORT HTR TSC7
BOXTEMP	282.80	2.06	-1.293e-01	5.381e-01	K	SEA box temperature (3FASEAAT)
FAMTRTEMP	275.94	5.18	-7.992e-01	9.698e-02	K	FA motor temperature
FLEXATEMP	270.57	3.24	2.489e-01	6.457e-01	K	Flexure A temperature (3FAFLAAT)
FLEXATSET	209.15	0.000e+00	0.000e+00	-5.169e-14	K	Flexure A temperature setpoint (3SFLXAST)
FLEXBTEMP	268.80	3.26	3.631e-01	4.266e-01	K	Flexure B temperature (3FAFLBAT)
FLEXBTSET	209.15	0.000e+00	0.000e+00	-8.481e-15	K	Flexure B temperature setpoint (3SFLXBST)
FLEXCTEMP	278.82	12.18	1.409e-01	6.062e-01	K	Flexure C temperature (3FAFLCAT)
FLEXCTSET	209.15	1.067e-02	-5.934e-05	0.000e+00	K	Flexure C temperature setpoint (3SFLXCST)
PSUTEMP	312.02	1.82	-2.576e-01	4.638e-01	K	SEA power supply temperature (3FAPSAT)
TSCMTRTEMP	276.69	19.13	-9.640e-02	-6.674e-02	K	TSC motor temperature

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