! Swift/XRT hardness ratio of trigger: 19750, name: GRB 250427A ! T0 for this burst is Swift MET=767417939.509 s, = 2025 Apr 27 at 03:38:24.009 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 23249.363 300.205 -309.075 0.045327 0.010528 23903.005 313.511 -353.437 0.034516 0.008784 NO NO NO NO NO ! PC -- soft data !Time Err (pos) Err(neg) Rate Error 23249.363 300.205 -309.075 0.034887 0.009385 23903.005 313.511 -353.437 0.038459 0.009268 NO NO NO NO NO ! PC -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 23249.363 300.205 -309.075 1.299234 0.461758 23903.005 313.511 -353.437 0.897474 0.314548