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Operations CXO Status Report

Friday 25 October 2024 9.00am EDT

During the last week, the observing schedule was interrupted due to a radiation monitor threshold violation associated with unanticipated high off-axis source count rates from the very bright and extended observation target. The loads were autonomously halted at 10:10 a.m. EDT on Oct 21 by the ACIS radiation monitor through execution of SCS 107 for SI safing. All spacecraft actions were nominal. A real-time procedure was executed on Oct 21 to disable SCS-29, which was enabled during the safing sequence. Planned observations that were impacted by the interruption will be rescheduled.

The schedule of targets for the next week is shown below, and includes an observation of AT2024qfm, which is a follow-up to a Target of Opportunity which was accepted on Aug 1 and is coordinated with NuSTAR, and an observation of SDSS J122855.90+341436.9 which is coordinated with HET.



------------------------------------------
        Radiation Belts                     Oct 27
        NGC6537                HRC-I
        AT2024qfm              ACIS-S       Oct 28
        Radiation Belts
        Mrk34                  ACIS-S
        M33X-8                 ACIS-S/HETG  Oct 29
        Vega                   HRC-S
        Vega                   HRC-S
        Mrk34                  ACIS-S
        M33X-8                 ACIS-S/HETG
        Mrk34                  ACIS-S       Oct 30
        M33X-8                 ACIS-S/HETG
        NGC6537                HRC-I
        1eRASSJ013811.8-253    ACIS-S
        Abell370               ACIS-I
        Radiation Belts                     Oct 31
        LMC2273                ACIS-S
        Abell370               ACIS-I       Nov  1
        NGC2287                HRC-I
        Abell370               ACIS-I
        SDSSJ090920.44+0044    ACIS-S
        Abell370               ACIS-I
        SDSSJ085711.68+0124    ACIS-S       Nov  2
        Mrk34                  ACIS-S
        Radiation Belts                     Nov  3
        SDSSJ122855.90+3414    ACIS-S
        HD61005                HRC-I
        Abell370               ACIS-I
        eRASSUJ080717.2-182    ACIS-S
        Abell370               ACIS-I

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

All spacecraft subsystems continued to support nominal operations.

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