! Swift/XRT hardness ratio of trigger: 1091101, name: GRB 211227A ! T0 for this burst is Swift MET=662340755.2, = 2021 Dec 27 at 23:32:06.709 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 READ TERR 1 READ SERR 2 NO NO NO NO NO ! PC -- hard data !Time Err (pos) Err(neg) Rate Error 330.930 722.758 -67.042 0.150456 0.026969 NO NO NO NO NO ! PC -- soft data !Time Err (pos) Err(neg) Rate Error 330.930 722.758 -67.042 0.317901 0.037240 NO NO NO NO NO ! PC -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 330.930 722.758 -67.042 0.473280 0.101345