{
    "event_id": "S251031dw",
    "alert_type": "PRELIMINARY",
    "event_time": "2025-10-31 21:07:49",
    "before_fromdate": "2025-10-01 21:07:49",
    "before_todate": "2025-10-31 21:07:49",
    "after_fromdate": "2025-10-31 21:07:49",
    "after_todate": "2025-11-14 21:07:49",
    "last_processed_datetime": "2025-11-14 21:38:51",
    "public": "1",
    "zip_file": "S251031dw_20251031_210749.zip",
    "current_json": "S251031dw_20251031_210749.json",
    "json_object_list_before": "S251031dw_20251031_210749_BEFORE.json",
    "json_object_list_after": "S251031dw_20251031_210749_AFTER.json",
    "tsv_object_list_before": "S251031dw_20251031_210749_BEFORE.tsv",
    "tsv_object_list_after": "S251031dw_20251031_210749_AFTER.tsv",
    "png_object_list_before": "S251031dw_20251031_210749_BEFORE.png",
    "png_object_list_after": "S251031dw_20251031_210749_AFTER.png",
    "event_page": "https://gracedb.ligo.org/superevents/S251031dw/view/",
    "instruments": "H1, L1",
    "far": "3.11387e-08",
    "group": "Burst",
    "skymap_fits": "S251031dw_20251031_210749.fits",
    "prob_bns": "",
    "prob_nsbh": "",
    "prob_bbh": "",
    "prob_mass_gap": "",
    "prob_terrestrial": "",
    "prob_has_ns": "",
    "prob_has_remnant": "",
    "prob_has_ssm": "",
    "distmean": "",
    "diststd": "",
    "significance": "high"
}