! Swift/XRT hardness ratio of trigger: 353627, name: GRB 090531A ! T0 for this burst is Swift MET=265427122.176 s, = 2009 May 31 at 01:45:17.390 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 1052358.406 434716.654 -191406.588 0.002409 0.000428 NO NO NO NO NO ! PC -- soft data !Time Err (pos) Err(neg) Rate Error 1052358.406 434716.654 -191406.588 0.001008 0.000281 NO NO NO NO NO ! PC -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 1052358.406 434716.654 -191406.588 2.388775 0.789238