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Operations CXO Status Report

Friday 9 December 2011 9.00am EST

During the last week Chandra completed the observing schedule as planned.

A flight software patch was uplinked on Dec 6 to remove the EPHIN E150 channel from use within the on-board RadMon process for the detection of a high-radiation environment. This patch eliminates the possibility of a false trigger due thermally induced noise in the channel. Real-time procedures were executed on Dec 7 to dump OBC-A memory as a follow-up to the patch. The dump will be used to update the baseline memory image maintained on the ground. An additional real-time procedure was executed on Dec 7 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer. A real-time procedure was executed on Dec 8 to update the on-board ephemeris.

Of note this week was the release on Dec 2 of CALDB 4.4.6.1. This release provides an update to the HETG grating efficiency file. For details see:

The schedule of targets for the next week is shown below



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Radiation Belts Dec 12 SPT-CLJ2146-4632 ACIS-I RXCJ0605_Field4 ACIS-I Dec 13 ZetaOrionis ACIS-S/HETG SDSSJ082212.57+2753 ACIS-S A1767 ACIS-I J144105.53+045454.95 ACIS-S Dec 14 SDSSJ1442+0920 ACIS-S 1321+045 ACIS-S GJ3622 ACIS-S Radiation Belts A401 ACIS-I ABELL545 ACIS-S Dec 16 J1857.9-7830 ACIS-I A1882c ACIS-S Dec 17 Radiation Belts PSRB1259-63 ACIS-I A1882b (2 obs) ACIS-S Dec 18 A1882c ACIS-S

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All spacecraft subsystems continued to support nominal operations.

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