MTA Monitoring Report 04/18/03 - 04/24/03

Archive of all weekly reports

Archive of monthly reports


Radiation

Quiet --- LASCO/EIT observed a partial halo CME on 2003/04/23.

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 8.527e-9 CTI/day
Detrended slope 8.792e-9 CTI/day

ACIS Warm Pixels



ACIS Focal Plane Temperature

For this period, only 1 peak is observed.

SIM Movements

10 TSC moves this period
weekly average time/step 0.00143 s
mission average time/step 0.00136 s

Telemetry

IRUs

The IRU-1 gyro-1 current has settled around 151-153 mA and become less noisy during this period. 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. The procedure and products to perform a swap to IRU-2 were approved last week by the Flight Director Board and are available in the event they are needed.

Reaction wheel speeds have occasionally dropped below the limit of 52.4 rad/s due to our increased momentum envelope.

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
3765 ACIS-S NONE OH231.8+4.2 OK OK
3882 ACIS-S NONE LNS3 OK OK
4383 ACIS-S NONE 3C58 OK Prob
4146 ACIS-S NONE UNJ1141-0143 OK OK
4434 ACIS-S NONE IGRJ16358-4726 OK OK
3834 ACIS-I NONE PSRB1509-58 OK OK
3814 ACIS-S HETG CYGX-1 OK /OK OK
4187 ACIS-I NONE A2063 OK OK
3959 ACIS-S NONE SDSSJ143352+022714 OK OK
4423 ACIS-S NONE XTEJ1908+094 OK OK
4093 ACIS-S NONE SDSSJ145123.02-000625.9 OK OK
4186 ACIS-I NONE A1736 OK OK
4191 ACIS-S NONE ABELL3526 OK OK
4190 ACIS-S NONE ABELL3526 OK OK
3775 HRC-S LETG V4743Sgr OK /OK OK

Trending

This Week's focus OBA Thermal.
Trends last reported on Jan 30.
Only the most interesting or representative msids are shown below. For a full listing choose the bulletted link.