MTA Monitoring Report 01/04/02 - 01/10/02

Archive of all weekly reports

Archive of Monthly reports

Radiation

SCS107 was manually commanded at 2002:011:03:17 GMT, due to over-budget predicted fluence.
Expect loads to resume at 2002:012:08:00 GMT.

The following alert was issued just before SCS107 ran:
Date: Thu, 10 Jan 2002 22:00:02 -0500 (EST)
ACIS ALERT!! ACE p+!
ACIS fluence = 1.01e+09 p/(cm^2-sr-MeV), in previous 15.9 hrs
Above limit=1.0E+09 at 112 - 187 keV.
Latest ACIS proton flux = 4.34e+04 p/(cm^2-s-sr-MeV).

ACIS/Radiation Environment correlations

CTI Trend

Average of ACIS-I CCDs (MnKa) slope 1.240e-8 CTI/day
Detrended slope 1.181e-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, two peaks were observed

SIM Movements

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

Telemetry

We are looking into the limits of HRMAAVG. This is a pseudo msid monitored at the suggestion of KODAK. Limits appear to be set incorrectly.

Ephin thermal violations are also being investigated. Most likely due to perihelion passage and attitude configuration.

01/04 01/05 01/06 01/07 01/08 01/09 01/10

Gyro Bias Drift


Recent Observations

OBSID DETECTOR GRATING TARGET ANALYSIS ACA
3069 ACIS-S NONE HS 1111+4033 OK OK
3158 ACIS-S NONE PSS1326+0743 OK OK
1624 ACIS-S NONE NGC5866 OK OK
3419 ACIS-I NONE MG J0414+0534 OK OK
2882 ACIS-I NONE NGC507 OK OK
3186 ACIS-I NONE NGC1550-A OK OK
3187 ACIS-I NONE NGC1550-B OK OK
2897 ACIS-I NONE M31-T4 OK OK
2791 ACIS-I NONE RX J1605+3249 OK OK
3103 ACIS-S NONE Q1328+254 OK OK
3203 ACIS-I NONE A168_OFFSET1 OK OK
2365 ACIS-I NONE 1RXSJ161411.3-630657 OK OK
2993 ACIS-S NONE PSS 1539+4312 OK OK
2799 ACIS-S NONE 1E1207.4-5209 CC OK
2542 ACIS-I NONE HD123445 OK OK
3228 ACIS-I NONE TXS 0145+386 FIELD OK OK
2559 HRC-S LETG VW CEP OK /Grat OK

Trending

This Week's focus Gratings
Voltage in Volts.

Most msids are keeping the same trends from the previous reporting period ( 10/19/01 - 10/25/01 weekly)
Interesting trends are indicated with "*".