! Swift/XRT hardness ratio of trigger: 453788, name: GRB 110521A ! T0 for this burst is Swift MET=327685898.432 s, = 2011 May 21 at 15:51:31.455 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 114.333 10.710 -9.595 4.743422 0.674457 NO NO NO NO NO ! WT -- soft data !Time Err (pos) Err(neg) Rate Error 114.333 10.710 -9.595 2.486132 0.479349 NO NO NO NO NO ! WT -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 114.333 10.710 -9.595 1.907953 0.440736 NO NO NO NO NO ! PC -- hard data !Time Err (pos) Err(neg) Rate Error 165.063 52.182 -33.067 2.799361 0.394034 281.480 141.364 -64.235 0.825023 0.138181 NO NO NO NO NO ! PC -- soft data !Time Err (pos) Err(neg) Rate Error 165.063 52.182 -33.067 1.097204 0.246703 281.480 141.364 -64.235 0.460490 0.103311 NO NO NO NO NO ! PC -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 165.063 52.182 -33.067 2.551359 0.676804 281.480 141.364 -64.235 1.791622 0.501605