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Operations CXO Status Report

Friday 15 September 2017 9.00am EDT

During the last week the observing schedule was interrupted by a high-radiation event that activated the science instrument safing sequence (SCS 107) and stopped observing at 3:51am EDT on Sep 11. All spacecraft actions were nominal. Real-time procedures were executed on Sep 11 to disable SCS-29 which was enabled during the safing sequence, to warm boot ACIS to clear an inappropriate status bit, and to update the observation identifier number to aid CXCDS processing of the interrupted observation. A replanned schedule was uplinked on Sep 13 with 152.3ks of science loss. The replanned schedule included an observation of MAXI J1535-571, a Target of Opportunity which was accepted on Sep 8. Scheduled observations of NGC 1313 X-1, ACT-CL J0154.4-0321, Haro 11, PSR J2055+2539 nebula, M30 and AR Lac were impacted and will be rescheduled.

The schedule of targets for the next week is shown below and includes an observation of NGC1313 X-1 coordinated with NuSTAR.

        CentaurusA             ACIS-S       Sep 17
        M30                    ACIS-S       Sep 18
        Radiation Belt                      Sep 19
        CentaurusA             ACIS-S
        PSRJ2129-0429          ACIS-S       Sep 20
        Radiation Belt                      Sep 21
        SNR1987A               ACIS-S/HETG
        M30                    ACIS-S       Sep 22
        MOOJ2206+0906          ACIS-I
        M30                    ACIS-S       Sep 23
        SNR1987A               ACIS-S/HETG
        Radiation Belt                      Sep 24
        NGC1313X-1             ACIS-S/HETG


All spacecraft subsystems continued to support nominal operations.

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