! Swift/XRT detailed lightcurve of trigger: 21639, name: GRB 231222B - source 1
 ! T0 for this burst is Swift MET=724922794.594 s, = 2023 Dec 22 at 07:26:29.594 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
43448.383	501.825	-270.423	5.922626e-02	1.132951e-02	-1.132951e-02	4.359866e-04	6.893553e-05	1.000000
53680.223	122.828	-157.991	8.586103e-02	2.240938e-02	-2.240938e-02	5.700578e-04	1.307802e-04	1.000000
54394.716	361.107	-591.665	4.328247e-02	8.735683e-03	-8.735683e-03	7.693453e-04	8.248247e-05	1.000000