! Swift/XRT detailed lightcurve of trigger: 21788, name: GRB 250309B/IceCube-250309A - source 1
 ! T0 for this burst is Swift MET=763198746.212 s, = 2025 Mar 09 at 07:38:31.000 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
! PC data
15788.120	8022.469	-3020.160	1.160455e-02	6.432121e-03	-4.882431e-03	1.220527e-03	1.133231e-04	0.065165
164927.274	5373.328	-4916.694	8.179190e-03	4.588156e-03	-3.388820e-03	1.552860e-04	1.417561e-05	0.192738