! Swift/XRT detailed lightcurve of trigger: 21535, name: GRB 230204B ! T0 for this burst is Swift MET=697239895.841 s, = 2023 Feb 04 at 21:44:25.141 UT ! Data covers 0.3-10 keV ! For details of light-curve production, see Evans et al. 2007, A&A, 469, 379 ! BINMODE: GRB-like (counts) READ TERR 1 2 READ SERR 3 !Time T_+ve T_-ve Rate Ratepos Rateneg BGrate BGerr FracExp