MTA Monitoring Report 2/16/01 - 02/22/01

Archive of all weekly reports

Archive of Monthly reports

Radiation

Quiet

CTI Trend

Average of ACIS-I CCDs (MnKa) slope 2.092e-8 CTI/day
Detrended slope 1.484e-8 CTI/day

Note: Temperature data selection changed.
Observations with cold radiator temperature deviation larger than 0.5 C
from the nominal value of -127.92905 C are dropped (after DOM 200).

ACIS Focal Temperature

For this period there are 3 peaks.
       Day (DOY)       Temp (C)        Width (DAY)
        47.51           -112.3          0.41
        50.16           -112.3          0.33
        52.80           -111.5          0.50

MTA Problem Tracking

No new or reopened problems were reported in this period

The following msids are being flagged due to eclipses
EB1V EB2V EB3V ESAPYI AOSAILLM TSAPYT TSAMYT ESAMYI ESAPYI
EB1CI EB1DI EB2CI EB2DI EB3CI EB3DI EPOVSPR AOPSAMUL

SIM Movements

8 TSC moves this period
weekly average time/step 0.00141 s
mission average time/step 0.00139 s

Telemetry

2/16, 2/19, 2/21
Eclipse related violations:
OBACONEAVG (computed oba cone average) peak 285.9
OBAAVG (computed oba average) peak 285.3
OOBAPWR (oba computed total power) peak ~800
ELBI (Load bus current) peak 96

2/18 LETG retraction, HETG insertion, retraction
4MP5AV peak 5V
4MP5BV peak 5V
4MP28AV peak 7V
4MP28BV peak 28V

2/18 FAMTRTEMP up to 283.5 (yellow limit 282.0)


Recent Observations

The ACA Problem is in the specified handling of guide star positional errors. This issue in not significant to the final product and so is being worked at low priority.
OBSID DETECTOR GRATING TARGET ANALYSIS ACA
2232 ACIS-I NONE HDF-N OK OK
1888 ACIS-S HETG HD 206267 IMAGE /GRAT PROBLEM
709 ACIS-S NONE AQL X-1 OK OK
2159 ACIS-I NONE 2MASSJ091848+2117 OK PROBLEM
1582 ACIS-I NONE M31 NUCLEUS/TRANS OK Missing
1589 HRC-S LETG NGC 4593 IMAGE /GRAT OK
597 HRC-S LETG UX ARI IMAGE /GRAT OK

Trending

This Week's focus TEL SUBSYSTEMS: OBA