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Operations CXO Status Report

Friday 24 October 2025 9.00am EDT

During the last week, the observing schedule was replanned to incorporate an observation of GRB251016A, which was accepted as a Director's Discretionary Time Target of Opportunity on Oct 19. Loads for the replanned schedule were uplinked on October 21. The schedule was again interrupted to incorporate an observation of V1935 Cen, which was accepted as a Director's Discretionary Time Target of Opportunity on Oct 20. Loads for the replanned schedule were uplinked on October 22. Planned observations that were impacted by the replans will be rescheduled.

An additional on-console procedure was run on Oct 24 to disable the HRC. This action was taken after the HRC High-Voltage telemetry values showed zero when they should have been commanded to their nominal state. This action protects the HRC while investigations into the anomaly proceed.

The schedule of targets for the next week is shown below and includes an observation of CHIMEJ1634+44, which was accepted as a Director's Discretionary Time Target of Opportunity on Oct 13, and is coordinated with the VLA.



------------------------------------------
        Radiation Belts                     Oct 26
        SDSSJ130557.09+3250    ACIS-S       Oct 27
        PerseusclusterE        ACIS-I
        AKARI-IRC-V1J175700    ACIS-S
        PerseusclusterE        ACIS-I
        Abell795               ACIS-S       Oct 28
        Radiation Belts
        CHIMEJ1634+44          ACIS-S
        Abell795               ACIS-S
        [vD2023]1              ACIS-I       Oct 29
        PSRJ2055+2539          ACIS-I
        IC10X-1                ACIS-S
        2RXSJ203732.9+14353    HRC-S /LETG  Oct 30
        IC1954                 ACIS-S
        SDSSJ023749.52-0925    ACIS-S
        Radiation Belts                     Oct 31
        NGC3596                ACIS-S
        NGC2283                ACIS-S
        [vD2023]1              ACIS-I       Nov  1
        2RXSJ203732.9+14353    HRC-S /LETG
        [vD2023]1              ACIS-I
        2MASSJ09270013+1900    ACIS-S
        UGC02168               ACIS-I
        NGC3596                ACIS-S       Nov  2
        CassiopeiaA            ACIS-S
        Radiation Belts

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

All spacecraft subsystems continued to support nominal operations.

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