! Swift/XRT hardness ratio of trigger: 1072990, name: GRB 210912A ! T0 for this burst is Swift MET=653137299.264 s, = 2021 Sep 12 at 11:01:11.550 UT ! The hard band is 1.51-10 keV ! The soft band is 0.3-1.5 keV ! For details of light-curve production, see Evans et al. 2007, A&A, 469, 379 ! There are 3 datasets: Hard, Soft, and the ratio ! Columns are as labelled ! BINMODE: GRB-like (counts) READ TERR 1 READ SERR 2 NO NO NO NO NO ! WT -- hard data !Time Err (pos) Err(neg) Rate Error 65.708 10.039 -6.998 3.138713 0.658193 NO NO NO NO NO ! WT -- soft data !Time Err (pos) Err(neg) Rate Error 65.708 10.039 -6.998 14.175752 1.945806 NO NO NO NO NO ! WT -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 65.708 10.039 -6.998 0.221414 0.043724 NO NO NO NO NO ! PC -- hard data !Time Err (pos) Err(neg) Rate Error 245.393 374.492 -152.041 0.324036 0.051620 5813.516 392.856 -319.217 0.070228 0.012457 11562.137 339.328 -375.253 0.039953 0.009079 20390.338 7962.887 -3459.557 0.013802 0.003628 NO NO NO NO NO ! PC -- soft data !Time Err (pos) Err(neg) Rate Error 245.393 374.492 -152.041 0.370840 0.055275 5813.516 392.856 -319.217 0.075467 0.012938 11562.137 339.328 -375.253 0.037596 0.008761 20390.338 7962.887 -3459.557 0.023847 0.004780 NO NO NO NO NO ! PC -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 245.393 374.492 -152.041 0.873790 0.190627 5813.516 392.856 -319.217 0.930572 0.229560 11562.137 339.328 -375.253 1.062704 0.345896 20390.338 7962.887 -3459.557 0.578767 0.191309