! Swift/XRT hardness ratio of trigger: 21750, name: GRB 241228B ! T0 for this burst is Swift MET=757052019.8 s, = 2024 Dec 28 at 04:13:05.000 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 ! PC -- hard data !Time Err (pos) Err(neg) Rate Error 40688.201 545.451 -693.173 0.020669 0.005380 NO NO NO NO NO ! PC -- soft data !Time Err (pos) Err(neg) Rate Error 40688.201 545.451 -693.173 0.027303 0.006196 NO NO NO NO NO ! PC -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 40688.201 545.451 -693.173 0.757024 0.261432