MTA Monitoring Report 11/02/01 - 11/08/01

Archive of all weekly reports

Archive of Monthly reports

Radiation

SCS 107 ran due to a RADMON trip on day 308 (Sunday, Nov 4) at 17:37:06 UT.
Observing restart at: 313 (Friday, Nov 9) 08:34:38 UT
An X-class flare on Nov 4 triggered a radiation violation on Nov 5. A Radiation violation of P3 (130Kev) has been observed by ACE. There have been several M class flares in the past 12 hours (since start of day 313).

ACIS/Radiation Environment correlations

CTI Trend

Average of ACIS-I CCDs (MnKa) slope 1.353e-8 CTI/day
Detrended slope 1.260e-8 CTI/day

ACIS Warm Pixels

The following pixels consistently showed a bias level more than 5 sigma away the chip's mean level during this period.
We suspect some of the recurring bad pixels may be due to biases which are taken just after perigee, when the focal plane is somewhat warm. For more information see the link above and MTA monthly reports.

ACIS Focal Temperature

For this period, 3 peaks were observed.

SIM Movements

7 TSC moves this period
weekly average time/step 0.00141 s
mission average time/step 0.00137 s

Telemetry

11/2 11/4 11/5 11/6 11/7 11/8

Recent Observations


Note: During Nov 3-4, another ACIS Threshold Crossing Plane latchup occurred in FEP3/S2. This effected the observation for obsid 2010 (see below). We executed CAP754B to correct the issue. Due to high radiation counts, several observations/tests were also delayed.
OBSID DETECTOR GRATING TARGET ANALYSIS ACA
2010 ACIS-S NONE PSR0628-28 PROBLEM OK
3195 ACIS-S NONE ZWICKY2701 OK OK
1951 ACIS-S NONE PUPPISBRIGHTEKNOT OK OK
3194 ACIS-S NONE ABELL611 OK OK
1893 ACIS-S NONE S106FIR OK OK
3222 ACIS-I NONE NGC3665GROUP OK OK
2221 ACIS-S NONE 53W002CLUSTER OK OK
1564 ACIS-S NONE UGC4305 OK OK
2044 ACIS-S NONE MARKARIAN266 OK OK

Trending

This Week's focus HRC.
Temperatures in degrees K.
Current in Amps.
Voltage in Volts.

No significant changes since last reported ( 08/17/01- 08/23/011 weekly).