MTA Monitoring Report 06/13/03 - 06/19/03

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Archive of monthly reports


Following the warm-restart of IRU-1 gyro-1 on 13 June, its current has returned from the restart value of ~100 mA to approximately the same level as prior to the warm-restart (~140 mA). This behavior is consistent with a trend towards eventual out of spec (anomalous) performance and the team is currently assessing a swap to IRU-2 in order to retain maximum operational lifetime on gyro-1. IRU-2 has continued to operate in parallel with IRU-1 and the initial calibration was completed last week without impact to operations.

Radiation

Quiet.

Detrended CTI

CTI analysis is now computed with "detrending":
Detrend CTI = Measured CTI + S3 amplitude reject rate * Detrend factor.

Average of ACIS-I CCDs (MnKa) slope 8.152e-9 CTI/day
Detrended slope 8.417e-9 CTI/day

ACIS Warm Pixels



ACIS Focal Plane Temperature

For this period, 3 peaks are observed.

SIM Movements

8 TSC moves this period
weekly average time/step 0.00130 s
mission average time/step 0.00136 s

Telemetry

IRUs

The gyro bias level has remained unaffected by the change in current and so to date, there has been no impact to science or operations.


Recent Observations

"Prob" means that there was probably bad time data included in the manual runs. This will be corrected in future processing.

OBSID DETECTOR GRATING TARGET ANALYSIS ACA
4082 ACIS-S NONE SDSSJ022756.28+005733.1 OK Prob
4064 ACIS-S NONE BR0331-1622 OK OK
4033 ACIS-S NONE 2MASS042032-20475 OK OK
3748 ACIS-S HETG ETACARINAE OK /OK OK
4402 ACIS-I NONE LALACETUSFIELD/LALABOOMER OK OK
3913 ACIS-S NONE 1E1207.4-5209 OK OK
4066 ACIS-S NONE BR0418-5723 OK OK
4129 ACIS-I NONE LALACETUSFIELD/LALABOOMER OK OK
3915 ACIS-S LETG 1E1207.4-5209 OK /OK OK

Trending

This Week's focus Ephin.

Trends last reported on Mar 20.

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


  • EPHIN Temperatures and Electronics

  • MSID MEAN RMS DELTA/YR DELTA/YR/YR UNITSDESCRIPTION
    5EIOT 3.258e+02 1.083e+01 4.613e+00 -7.058e+00 K EIO TEMP
    5EPHINT 2.889e+02 9.237e+00 6.612e+00 -4.869e+00 K EPHIN TEMP
    HKABIASLEAKI 7.378e-01 3.162e-01 2.145e-01 -1.214e-01 uA EPHIN HOUSEKEEPING A-BIAS: LEAKAGE CURRENT (5EHSE400)
    HKBBIASLEAKI 2.427e-01 1.998e-01 1.372e-01 -4.517e-02 uA EPHIN HOUSEKEEPING B-BIAS: LEAKAGE CURRENT (5EHSE500)
    HKCBIASLEAKI 9.263e+00 6.517e+00 4.461e+00 -7.178e-01 uA EPHIN HOUSEKEEPING C-BIAS: LEAKAGE CURRENT (5EHSE600)
    HKDBIASLEAKI 9.837e+00 7.207e+00 4.903e+00 -6.736e-01 uA EPHIN HOUSEKEEPING D-BIAS: LEAKAGE CURRENT (5EHSE700)
    HKEBIASLEAKI 1.052e+01 7.888e+00 5.562e+00 -4.169e-01 uA EPHIN HOUSEKEEPING E-BIAS: LEAKAGE CURRENT (5EHSE800)
    HKEBOXTEMP 2.941e+02 9.163e+00 6.522e+00 -4.550e+00 K EPHIN HOUSEKEEPING EBOX: TEMPERATURE (5EHSE300)
    HKFBIASLEAKI 2.265e-01 2.208e-01 1.535e-01 -2.830e-02 uA EPHIN HOUSEKEEPING F-BIAS: LEAKAGE CURRENT (5EHSE900)
    HKP27I 4.459e+00 6.535e-01 4.571e-01 -2.315e-02 AMP HK 27 Volts Rail - Current
    TEIO 2.955e+02 1.269e+01 5.266e+00 -7.598e+00 K EPHIN ELECTRONICS HOUSING TEMP
    TEPHIN 2.891e+02 9.352e+00 6.610e+00 -5.248e+00 K EPHIN SENSOR HOUSING TEMP

  • EPHIN Temperatures and Electronics vs. Sun angle

  • td>-5.531e-05
    vs. Attitude
    MSID MEAN RMS DELTA/DEG DELTA/DEG/DEG UNITSDESCRIPTION
    MSID MEAN RMS DELTA/DEG DELTA/DEG/DEG UNITSDESCRIPTION
    5EIOT 3.258e+02 1.083e+01 -1.778e-01 -6.870e-03 K EIO TEMP
    5EPHINT 2.889e+02 9.237e+00 -3.747e-02 -3.821e-03 K EPHIN TEMP
    HKBBIASLEAKI 2.427e-01 1.998e-01 -5.414e-04 uA EPHIN HOUSEKEEPING B-BIAS: LEAKAGE CURRENT (5EHSE500)

  • EPHIN Rates/Leakage Current vs. Temperature

  • Count rates vs. Temperature
    MSID MEAN RMS DELTA/K DELTA/K/K UNITSDESCRIPTION
    SCE1300 1.321e+03 1.040e+04 -6.845e+01 NaN counter Sci coincidence
    SCE150 2.161e+04 7.410e+04 2.704e+00 NaN counter Sci coincidence
    SCP41GM 1.922e+02 5.812e+03 -1.257e+01 NaN counter Sci coincidence
    SCP4GM 1.319e+04 5.838e+04 -1.621e+02 NaN counter Sci coincidence
    Electronics vs. Temperature
    MSID MEAN RMS DELTA/K DELTA/K/K UNITSDESCRIPTION
    HKABIASLEAKI 7.363e-01 3.163e-01 2.134e-02 NaN uA EPHIN HOUSEKEEPING A-BIAS: LEAKAGE CURRENT (5EHSE400)
    HKBBIASLEAKI 2.410e-01 1.992e-01 1.320e-02 NaN uA EPHIN HOUSEKEEPING B-BIAS: LEAKAGE CURRENT (5EHSE500)
    HKCBIASLEAKI 9.204e+00 6.484e+00 4.442e-01 NaN uA EPHIN HOUSEKEEPING C-BIAS: LEAKAGE CURRENT (5EHSE600)
    HKDBIASLEAKI 9.792e+00 7.247e+00 4.918e-01 NaN uA EPHIN HOUSEKEEPING D-BIAS: LEAKAGE CURRENT (5EHSE700)
    HKEBIASLEAKI 1.045e+01 7.871e+00 5.253e-01 NaN uA EPHIN HOUSEKEEPING E-BIAS: LEAKAGE CURRENT (5EHSE800)
    HKEBOXTEMP 2.941e+02 9.147e+00 6.764e-01 NaN K EPHIN HOUSEKEEPING EBOX: TEMPERATURE (5EHSE300)
    HKFBIASLEAKI 2.267e-01 2.222e-01 1.486e-02 NaN uA EPHIN HOUSEKEEPING F-BIAS: LEAKAGE CURRENT (5EHSE900)
    HKP27I 4.463e+00 6.608e-01 4.450e-02 NaN AMP HK 27 Volts Rail - Current
    TEIO 2.956e+02 1.273e+01 1.133e+00 1.538e-02 K EPHIN ELECTRONICS HOUSING TEMP
  • EPHIN Housekeeping


  • EPHIN Rates


  • EPHIN Key Rates


  • HRMA and OBA Thermal Trending

    Noted below are increases in many HRMA and OBA thermal values that seem to coincide with the powering on of IRU-B on 06/06/03 (DOY 157).