! Swift/XRT detailed lightcurve of trigger: 773509, name: GRB 170921A
 ! T0 for this burst is Swift MET=527696948.224 s, = 2017 Sep 21 at 14:28:48.503 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
NO	NO	NO	NO	NO
! PC data
111.715	8.073	-6.971	3.265324e+00	6.979429e-01	-6.979429e-01	3.682082e-03	2.125851e-03	1.000000
124.981	7.343	-5.193	3.844123e+00	8.202645e-01	-8.202645e-01	1.472841e-03	1.472841e-03	1.000000
142.893	17.012	-10.568	1.661647e+00	3.642170e-01	-3.642170e-01	3.347351e-03	1.496981e-03	1.000000
186.716	40.887	-26.811	6.463549e-01	1.450700e-01	-1.450700e-01	1.090990e-03	5.454949e-04	1.000000
304.547	73.495	-76.944	2.958204e-01	6.658168e-02	-6.658168e-02	8.591544e-04	3.247298e-04	1.000000
448.677	67.266	-70.636	2.739643e-01	6.172589e-02	-6.172589e-02	1.083985e-03	3.832466e-04	0.999984
618.981	85.011	-103.037	1.303059e-01	2.941797e-02	-2.941797e-02	1.005382e-03	3.179297e-04	1.000000
788.116	76.344	-84.124	1.558672e-01	3.498651e-02	-3.498651e-02	4.712730e-04	2.356365e-04	1.000000
977.032	88.013	-112.572	1.225433e-01	2.763886e-02	-2.763886e-02	8.482916e-04	2.827639e-04	1.000000
1247.254	198.898	-182.209	8.334906e-02	1.662675e-02	-1.662675e-02	1.140991e-03	2.379130e-04	1.000000
5131.291	423.914	-360.878	2.557454e-02	6.731496e-03	-6.731496e-03	3.625001e-04	6.127369e-05	1.000000
6324.674	857.762	-769.469	2.039950e-02	4.196327e-03	-4.196327e-03	4.245841e-04	4.605262e-05	1.000000
11714.297	1209.266	-1250.395	1.209771e-02	2.781130e-03	-2.781130e-03	2.216963e-04	2.049583e-05	1.000000