ACIS Instrument Support - Monthly Progress Report for June 2009

1.  ACIS Characterization

1.1 Characterize and model radiation damage in ACIS CCDs

  ...  Continued work on irradiation/annealing tests done at GSFC
in 2005.  Finalizing analysis.

1.3 Monitor scientific on-orbit performance of ACIS

  ...  Continued monitoring of ACIS CTI, gain, trailing pixel 
pulseheight, detector efficiency, corner pixel distribution, spectral 
line centroid and width, and focal plane temperature.  Updated 
monitoring web pages.  (http://space.mit.edu/~cgrant/monitor.html)


2.  Engineering

2.1 Instrument hardware engineering performance

  ...  Continue to monitor long term ACIS instrument performance. 
A review of the past 60 days of ACIS Engineering Parameters shows no  
unexpected trends.

2.2 Flight software maintenance

  ...  Prepared Flight Directors Board presentation on "Closeout of 
ACIS Watchdog Reboot DOY 2008:279" [OCCcm08639].  Presented on 2 July.

2.3 Instrument science performance

  ...  Participated in monthly ACIS operations meetings.  Discussed
lessons learned from 30 May power outage at 1 Hampshire, status of
next flight software patch, and new PSMC thermal prediction model.

  ...  Continued daily quick-look processing of ACIS telemetry and
maintained Web interface to ACIS real-time data.

  ...  Continued to publish the "annotated DOT" timeline reports.


3.  CXC Support

3.1 Provide user support

  ...  Updated ACIS memo listing calibration ObsIDs and 
observation characteristics (ACIS Memo #165).

3.2 Provide data analysis support

  ...  Participated in CXC Cal/Ops modeling discussion group.  Discussed
proposed update to the ACIS contamination model, updating CXC ACIS 
calibration web pages.

  ...  Answered CXC Cal questions about early pre-door-opening ACIS
data.

  ...  Answered Project Science question on I-array CCD angular tilt.

  ...  Continued to maintain ACIS calibration database of ground 
and flight data products.


4.  OCC Support

4.1 Use of MIT/ACIS EGSE at OCC

  ...  Continued support and maintenance of ACIS EGSE software and
hardware at the OCC.


Outreach:

none this month

all recent memos available at http://space.mit.edu/ACIS/iacis.html