MTA Monitoring Report 08/28/20 - 09/03/20

Archive of all weekly reports
Archive of monthly reports

Chandra is still in SCS-107 mode since Aug 24 due to the HRC power supply voltages are out of state.

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.

Average of ACIS-I CCDs (MnKa) slope: 5.748e-02 CTI/year (1.575e-04 CTI/day)
Detrended slope: 6.114e-02 CTI/year (1.675e-04 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.

 CCD0CCD1CCD2CCD3CCD4CCD5CCD6CCD7CCD8CCD9
Previously Unknown Bad Pixels                    
Current Warm Pixels               (335,412)    
Flickering Warm Pixels (143,700) (154,9) (692,141) (910,239) (787,181) (802,665) (726,537) (526,66) (665,25) (178,149) (753,344) (21,95) (144,50) (811,637)     (670,387) (287,164) (1000,214)   (139,109) (881,53) (197,241) (675,304)  
Current Hot Pixels                    
Flickering Hot Pixels                    
Warm column candidates           1022 510 512   1022 512    
Flickering Warm column candidates                    

ACIS Focal Plane Temperature

For this period, 6 peaks are observed.

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

9 TSC moves this period

Telemetry

New violations or new extrema are shown in blue cells.

MSID 08/28/20 08/29/20 08/30/20 08/31/20 09/01/20 09/02/20 09/03/20 yellow limits
(lower)
upper 		red limits
(lower)
upper 		Units Description
TSCTSF3 (267.70)             (278.15)
359.15		 (269.15)
483.15		 KSC-TS FITTING -3 TEMP
HRMACAV   295.54     295.55     (293.4)
294.8		 (292.8)
295.5		 TEMPHRMA CAVITY AVG TEMP
TEP_PSU2         (263.69) (263.69) (263.69) (283.15)
343.15		 (264.15)
393.15		 KPSU-2 TEMP
TCM_TX1 (267.33) (266.61) (266.97) (266.61) (266.61) (266.97) (266.97) (283.15)
348.15		 (269.15)
404.15		 KTRANSPONDER-1 EXT BPL TEMP
TCM_PA2   (259.32) (260.05) (259.32) (258.96) (258.96) (258.96) (269.15)
348.15		 (260.15)
413.15		 KRF POWER AMP-2 EXT BPL TEMP
TPCP_RW3       (277.17)       (288.15)
363.15		 (278.15)
404.15		 KRWA -3 TEMP (+Z PCAD COMP)
TCM_PA1 (259.32) (258.56) (258.96) (258.56) (257.36) (257.36) (257.36) (269.15)
348.15		 (260.15)
413.15		 KRF POWER AMP-1 EXT BPL TEMP
MZOBACONE     308.17 308.26       (260.2)
303.0		 (250.2)
308.0		 CONE-Z SIDE OBA CONE
TSCTSF4         (268.43)     (283.15)
359.15		 (269.15)
483.15		 KSC-TS FITTING -4 TEMP
OBAAVG   301.43 301.68 301.73       (282.5)
300.0		 (281.4)
301.0		 KOBA/TFTE TEMP
TPCP_RW2         (275.34)     (288.15)
363.15		 (278.15)
404.15		 KRWA -2 TEMP (+Z PCAD COMP)
OBACONEAVG 304.30   305.35 305.41       (282.5)
300.0		 (281.8)
301.0		 KOBA CONE AVG TEMP


IRUs

Gyro Bias Drift Gyro Bias Drift Histogram

Recent Observations

There was No Observations in the Last Eight Days

Trending

This week's focus is SIM

Last reported on Jun 18.

Only the most interesting or representative msids are shown below. For a full listing choose the bulletted link.


MSIDMeanRMSDelta/YrDelta/Yr/YrUnitDescription
3btu_bpt 0.4620.012(2.65+/-0.07)e2-0.10 +/- 0.27KBTU BASEPLATE (+X)), ABORT HTR TSC2
3fabraat -0.1140.005(2.65+/-0.03)e2-(7.45+/-9491.00)e-5KFA STRUCTURE AT BEARING A ABORT HTR. FA6 TEMP
3fabrcat -0.1850.011(2.74+/-0.06)e2-0.04 +/- 0.23KFA STRUCTURE AT BEARING C ABORT HTR. FA6 TEMP
3famyzat -1.2040.016(2.81+/-0.12)e2-0.06 +/- 0.28KFA STRUCTURE +X FACE AT -Y-Z END ABORT HTR. FA6 TEMP
3fapyzat -1.4580.013(2.79+/-0.11)e2-0.05 +/- 0.11KFA STRUCTURE +X FACE AT +Y+Z END ABORT HTR. FA6 TEMP
3faralat -0.6240.017(2.75+/-0.10)e2-0.06 +/- 0.37KFA STRUCTURE AT RAIL -Z, ABORT HEATER FA6 TEMP
3flcabpt 0.4590.005(2.81+/-0.04)e2-0.16 +/- 0.10KFLCA BASEPLATE (+X)
3rctubpt 0.6170.014(2.72+/-0.09)e2-0.15 +/- 0.34KRCTU BASEPLATE (+X)
3tsmxcet 2.2000.033(2.24+/-0.22)e2-0.37 +/- 0.64K-X TURTLE SHELL NR HRC CEA
3tsmxspt 7.3590.107(2.85+/-0.73)e20.73 +/- 0.93K-X TURTLE SHELL NR ACIS SS
3tsmydpt 1.0330.013(2.32+/-0.10)e2-0.24 +/- 0.26K-Y TURTLE SHELL NR ACIS DPA
3tspyfet 0.4830.008(2.34+/-0.05)e2-0.34 +/- 0.18K+Y TURTLE SHELL NR HRC FEA
3tspzdet 0.7100.011(2.66+/-0.07)e2-0.17 +/- 0.23K+Z TURTLE SHELL NR ACIS DEA
3tspzspt 0.8010.010(2.70+/-0.07)e2-0.21 +/- 0.20K+Z TURTLE SHELL NR ACIS SS
3ttacs1t 0.1380.004(2.65+/-0.02)e2-0.00 +/- 0.08KTT at ACIS Attach #1 Abort Htr
3ttacs2t 0.1200.005(2.65+/-0.03)e2-0.01 +/- 0.10KTT at ACIS Attach #2 Abort Htr
3ttacs3t 0.1210.002(2.62+/-0.01)e2-0.02 +/- 0.03KTT at ACIS Attach #3 Abort Htr
3ttbrgbt 0.1930.016(2.59+/-0.09)e2-0.06 +/- 0.36KTT at Bearing B, Abort Htr TSC4
3tthrc1t 0.2280.016(2.68+/-0.09)e2-0.15 +/- 0.38KTT at HRC Bipod Attach #1
3tthrc2t 0.2300.016(2.72+/-0.09)e2-0.17 +/- 0.37KTT at HRC Bipod Attach #2
3tthrc3t 0.1340.004(2.67+/-0.03)e20.01 +/- 0.09KTT at HRC Bipod Attach #3
3ttralat 0.2580.010(2.46+/-0.06)e2-0.04 +/- 0.18KTT at Rail A, Abort Htr TSC3
3ttralct 0.1120.007(2.66+/-0.04)e20.06 +/- 0.16KTT at Rail C, Abort Htr TSC3
3ttvalvt 0.3860.013(2.53+/-0.07)e2-0.28 +/- 0.27KTT at Vent Valve, Abort Htr TSC7

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