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Operations CXO Status Report

Friday 14 November 2025 9.00am EST

During the last week, the observing schedule was interrupted due to a radiation monitor threshold violation. The loads were autonomously halted at 5:58am EST on Nov 11 by the ACIS radiation monitor through execution of SCS 107 for SI safing. All spacecraft actions were nominal. Real-time procedures were executed on Nov 11 to disable SCS-29, which was enabled during the safing sequence, and to change the ObsID. A further real-time procedure was executed on Nov 13 to start an ACIS external calibration source measurement during the radiation shutdown. Loads for a replanned schedule will be uplinked on Nov 14. Planned observations that were impacted by the interruption will be rescheduled.

The schedule of targets for the next week is shown below.



------------------------------------------
        ESO320-G014            ACIS-I       Nov 14
        IC1954                 ACIS-S       Nov 15
        NGC7172_s1             ACIS-S
        SDSSJ031426.10-0108    ACIS-S
        Radiation Belts                     Nov 16
        SN2018ivc              ACIS-S
        ESO231-26              ACIS-S
        SN2018ivc              ACIS-S
        WISEJ121857.42+1035    ACIS-S
        ZTFJ0425+3858          ACIS-S       Nov 17
        CenterofCOSMOS-Web     ACIS-I
        Perseuscluster         ACIS-I
        WISEJ121857.42+1035    ACIS-S       Nov 18
        Perseuscluster         ACIS-I
        Radiation Belts
        Abell2255              ACIS-I       Nov 19
        TonS180                ACIS-I
        CD-4514955B            ACIS-S
        Abell2255              ACIS-I
        B2.40357+23            ACIS-S
        CFHQSJ142952+544717    ACIS-S       Nov 20
        Perseuscluster         ACIS-I
        CFHQSJ142952+544717    ACIS-S
        SDSSJ014837.63+0600    ACIS-I
        Radiation Belts                     Nov 21
        PSRJ1101-6101          ACIS-I
        Perseuscluster         ACIS-I
        PSRJ1101-6101          ACIS-I       Nov 22
        Perseuscluster         ACIS-I
        ACT-CLJ1032.8+1310     ACIS-S
        Perseuscluster         ACIS-I
        SDSSJ125354.49+2624    ACIS-S
        Perseuscluster         ACIS-I       Nov 23
        IC2604                 ACIS-S
        ZwCl0857.9+2107        ACIS-S
        Radiation Belts

------------------------------------------

All spacecraft subsystems except HRC continued to support nominal operations.

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