MTA Monitoring Report 03/22/02 - 03/28/02

Archive of all weekly reports

Archive of monthly reports

Radiation

Although some effects from M1.6 flare from the last week were observed, no radiation warning was issued during this period.

ACIS/Radiation Environment correlations

CTI Trend

Average of ACIS-I CCDs (MnKa) slope 1.113e-8 CTI/day
Detrended slope 1.086e-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 Plane Temperature

For this period, 3 peaks were observed

SIM Movements

9 TSC moves this period
weekly average time/step 0.00131 s
mission average time/step 0.00137 s

Telemetry

03/23 03/24 03/25 03/26 03/28

IRUs


Recent Observations

All data reported below are based on manual processing. "Prob" means that there was probably bad time data included in the manual runs.

OBSID DETECTOR GRATING TARGET ANALYSIS ACA
2970 ACIS-S HETG 1ES1028+511 OK /OK OK
2564 ACIS-S HETG 24URSAEMAJORIS OK /OK OK
3319 ACIS-S NONE AXJ1035.1+3938 OK OK
3215 ACIS-S NONE HCG42 OK OK
3099 ACIS-S NONE Q0941-080 OK OK
2010 ACIS-S NONE PSR0628-28 OK OK
2971 ACIS-S HETG 3C279 OK /OK OK
3235 ACIS-I NONE SC1120-1202 OK OK
3452 ACIS-S HETG IRAS18325-5926 OK /OK OK
2952 ACIS-I NONE SGRA* OK OK
3065 ACIS-S NONE HS0830+1833 OK OK
3055 ACIS-S NONE Q1231+481 OK OK
3067 ACIS-S NONE HS0854+0915 OK OK
3253 ACIS-I NONE MACS-J1115.2+5320 OK OK

Trending

This Week's focus Gratings

Trends last reported on Jan 10.

This is a Beta version of a new trending presentation which uses the MTA Databases. The databases currently contain values for the period July 2001 through March 2002. We are aware of several bugs which are being worked, so there is no need to report bugs, but comments on the new format are welcome to Scott or Brad.

Provided below are trending and limit predictions for various Chandra subsystems. For each msid the data are plotted and the mean, standard deviation, and first and second derivatives are calculated. Two plots are displayed for each msid. Plot 1 includes data points, a first degree fit line (first derivative), and a curve representing the data smoothed over a suitable period (10 or 30 days in most cases). Plot 2 shows the point-to-point slopes of the smoothed curve and a fit line (second derivative) to this data.