MTA Monitoring Report 09/14/01 - 09/20/01

Archive of all weekly reports

Archive of Monthly reports

Radiation

Continued from last week: Accumulated fluence for orbit 290 (DOM 784) was 3.09e+09 p/cm^2-sr-MeV.
This week: Relatively quiet. Moderate solar activity bears watching.

ACIS/Radiation Environment correlations

Increased background rates continue near rad zone entry. The plot below covers the period since Sept. 01, 2001 and is smoothed on a 5 min. interval without distinguishing any grades/quality of data. Obsids affected this week: 1041, 1613. OBSID 1022 (DOM 784), which shows S2 high, is a grating observation of a bright source, so this is not data on the radiiation situation.


CTI Trend

Average of ACIS-I CCDs (MnKa) slope 1.419e-8 CTI/day
Detrended slope 1.324e-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.
For more information see the link above and MTA monthly reports.

ACIS Focal Temperature

For this period, 3 peaks were observed.

MTA Problem Tracking

Note: Problem Tracking system is currently not working properly. Many problems reported are not listed on the table.

SIM Movements

10 TSC moves this period
weekly average time/step 0.00139 s
mission average time/step 0.00136 s

Telemetry

9/15 9/18 9/19

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
1038 HRC-S NONE CAS-A Not Avail Missing
2514 ACIS-S NONE WZ SGE CC OK
1615 ACIS-S NONE NGC3147 OK Missing
1613 ACIS-S NONE 3C120 OK Problem
2180 ACIS-S NONE BRI 0103+0032 OK OK
1886 ACIS-S NONE TAU CETI OK OK
1034 ACIS-S NONE RX J0852.0-4622 CC OK
2179 ACIS-S NONE PSS 0059+0003 OK OK
1992 ACIS-S NONE 0548-70.4 OK OK
1041 ACIS-S NONE N49B OK Problem
2491 ACIS-S HETG 1E1740.7-2942 OK /GRAT OK
2516 ACIS-S NONE A3112 OK OK
2258 ACIS-I NONE AGX~J045301-5304 OK OK
2388 ACIS-S HETG PROXIMA CENTAURI OK /GRAT OK
2088 ACIS-S HETG FAIRALL 9 OK /GRAT OK

Trending

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

Most msids are keeping the same trends from the previous reporting period ( 06/29/01 - 07/05/01 weekly).
Interesting trends are indicated with "*".