! Swift/XRT lightcurve of trigger: 639278, name: GRB 150428B
 ! T0 for this burst is Swift MET=451883537.024 s, = 2015 Apr 28 at 03:12:03.518 UT

 ! Data covers 0.3-10 keV
 ! The data are in 5 columns: ";
 ! time, time error (+ve), time error (-ve), source flux, source error
 ! For a detailed description of light curve production, see Evans et al. 2007 (A&A, 469, 379 )
 ! For a detailed description of the file, see
 ! http://www.swift.ac.uk/xrt_curves/docs.php
 ! This lightcurve was obtained from http://www.swift.ac.uk/xrt_curves/00639278
 ! BINMODE: GRB-like (counts)

READ TERR 1 2
! WTSLEW data
!Time    	T_+ve   	T_-ve   	Flux    	Fluxpos 	Fluxneg
101.135908952027	0.477686073614535	-0.395836956872472	7.122099694992e-09	8.9839904167911e-10	-8.65605685883496e-10
101.983046171049	0.354654868367788	-0.369451145407211	8.6075981381598e-09	1.10556789053318e-09	-1.04613653241786e-09
102.738390497562	0.396377528416124	-0.400689458144882	7.81954666808041e-09	1.02451201098358e-09	-9.52231611042761e-10
103.675509520601	0.45559848216466	-0.540741494623333	6.28157897686338e-09	8.26980119347171e-10	-7.64550056088896e-10
104.537156774445	0.325190249145209	-0.406048771678797	8.71471165039718e-09	1.1984925907626e-09	-1.05955519625427e-09
105.243619985611	0.293018052649686	-0.381272962021313	9.59737334503494e-09	1.22424270898247e-09	-1.16806799856727e-09
106.20336341549	0.684380594004921	-0.666725377229071	9.248612322087e-09	9.70478769791728e-10	-8.24278777658456e-10
NO	NO	NO	NO	NO
! WT data
!Time    	T_+ve   	T_-ve   	Flux    	Fluxpos 	Fluxneg
114.0565	0.2769	-0.2497	6.00478252e-09	7.55221746e-10	-7.54971522e-10
114.5734	0.2670	-0.2400	6.33051883e-09	7.91595654e-10	-7.91505028e-10
115.1362	0.2825	-0.2957	5.52188228e-09	6.86964328e-10	-6.86865281e-10
115.6479	0.2725	-0.2292	6.24189382e-09	7.95663799e-10	-7.95526657e-10
116.1711	0.2528	-0.2507	7.13271532e-09	8.42137694e-10	-8.41736694e-10
116.6943	0.2348	-0.2704	6.50795732e-09	7.94435135e-10	-7.9388777e-10
117.1911	0.3589	-0.2620	4.99434272e-09	6.4122707e-10	-6.40791183e-10
117.7971	0.2546	-0.2471	6.55402019e-09	7.98704181e-10	-7.9809426e-10
118.3333	0.2878	-0.2815	5.55442343e-09	6.95843671e-10	-6.95356857e-10
118.8970	0.2774	-0.2759	5.77045015e-09	7.13731479e-10	-7.13205367e-10
119.5143	0.3112	-0.3399	4.80943761e-09	6.08810631e-10	-6.08365922e-10
120.0887	0.3026	-0.2632	5.58942271e-09	6.97106019e-10	-6.96628027e-10
120.6950	0.2977	-0.3037	5.25862578e-09	6.54972548e-10	-6.54595608e-10
121.2481	0.2551	-0.2555	6.19307608e-09	7.7094656e-10	-7.70548367e-10
121.8260	0.2964	-0.3227	5.15692817e-09	6.33722756e-10	-6.33417194e-10
122.4408	0.2723	-0.3184	5.3019819e-09	6.68098882e-10	-6.67800137e-10
122.9613	0.2872	-0.2483	3.89032957e-09	6.04103693e-10	-6.04001037e-10
123.5643	0.3034	-0.3158	5.15697629e-09	6.3251735e-10	-6.32401461e-10
124.1740	0.3092	-0.3064	3.952695095e-09	5.58401723e-10	-5.58406134e-10
124.7580	0.3248	-0.2748	5.14626558e-09	6.30508741e-10	-6.30521172e-10
125.3467	0.2396	-0.2639	6.10225359e-09	7.6086943e-10	-7.60888678e-10
125.8890	0.3164	-0.3027	4.98359592e-09	6.10498039e-10	-6.10525307e-10
126.5134	0.2383	-0.3079	3.794219494e-09	5.66632649e-10	-5.66651496e-10
127.0449	0.3259	-0.2932	4.98368815e-09	6.10458741e-10	-6.10496034e-10
127.6567	0.2229	-0.2859	6.15474449e-09	7.48209058e-10	-7.48285649e-10
128.1593	0.3003	-0.2797	5.26903574e-09	6.53347295e-10	-6.53435916e-10
128.8329	0.2956	-0.3733	4.5683123e-09	5.66349142e-10	-5.66446184e-10
129.4853	0.3726	-0.3568	4.14891041e-09	5.20841256e-10	-5.20945115e-10
130.1189	0.2479	-0.2609	6.09635889e-09	7.4994218e-10	-7.50098169e-10
130.6740	0.2746	-0.3072	5.30364204e-09	6.49059402e-10	-6.49205767e-10
131.3171	0.4036	-0.3685	3.898203205e-09	4.86754652e-10	-4.86876957e-10
132.0703	0.2464	-0.3496	3.377892472e-09	5.2344936e-10	-5.23547605e-10
132.6311	0.3208	-0.3144	4.85795059e-09	5.94305258e-10	-5.94471272e-10
133.2138	0.2700	-0.2620	3.895726228e-09	5.81389048e-10	-5.81480877e-10
133.7959	0.3587	-0.3121	4.55617403e-09	5.64528602e-10	-5.64676571e-10
134.4307	0.2789	-0.2762	5.55883443e-09	6.79881465e-10	-6.80091589e-10
134.9929	0.2469	-0.2833	3.886462326e-09	5.79809509e-10	-5.79928606e-10
135.4903	0.2939	-0.2506	3.604445843e-09	5.69382707e-10	-5.69488571e-10
136.0676	0.2432	-0.2834	3.979323901e-09	5.87184701e-10	-5.87308209e-10
136.6428	0.4082	-0.3320	4.08454991e-09	5.05851475e-10	-5.06011474e-10
137.3497	0.3133	-0.2987	3.328498094e-09	5.09639321e-10	-5.09746388e-10
138.0212	0.3445	-0.3582	2.917150289e-09	4.35062945e-10	-4.35160388e-10
138.5948	0.2993	-0.2291	5.77657342e-09	7.06101251e-10	-7.0633343e-10
139.2016	0.2547	-0.3075	3.594579639e-09	5.46269869e-10	-5.46385357e-10
139.7285	0.2989	-0.2722	3.988568555e-09	5.64290007e-10	-5.64427951e-10
140.2762	0.3205	-0.2488	3.600912231e-09	5.36985516e-10	-5.37104212e-10
140.9174	0.2361	-0.3207	3.576354189e-09	5.53951826e-10	-5.54062502e-10
141.4879	0.3542	-0.3343	4.43313119e-09	5.41817566e-10	-5.4198759e-10
142.1964	0.3680	-0.3543	4.18523299e-09	5.18057113e-10	-5.18217112e-10
142.8788	0.2656	-0.3144	3.484163487e-09	5.29451528e-10	-5.29558595e-10
143.4272	0.2652	-0.2828	3.937188024e-09	5.78616935e-10	-5.78742047e-10
144.0304	0.2882	-0.3381	3.226810509e-09	4.90342399e-10	-4.90441446e-10
144.6505	0.3246	-0.3319	3.122694869e-09	4.65620348e-10	-4.65716187e-10
145.2808	0.2120	-0.3057	3.959710991e-09	5.90426786e-10	-5.90548289e-10
145.8231	0.2906	-0.3303	3.249711218e-09	4.93812252e-10	-4.93909695e-10
146.3733	0.2600	-0.2595	3.881520001e-09	5.89810449e-10	-5.89925135e-10
146.8928	0.2653	-0.2596	3.897573234e-09	5.81154463e-10	-5.81272758e-10
147.5331	0.3847	-0.3750	3.970647063e-09	4.91449961e-10	-4.91592717e-10
148.2223	0.2986	-0.3045	3.391634341e-09	5.05712729e-10	-5.05814984e-10
148.7131	0.3255	-0.1922	3.951072248e-09	5.89119927e-10	-5.89237019e-10
149.3973	0.3423	-0.3587	4.34493124e-09	5.30982947e-10	-5.31138134e-10
150.0562	0.3613	-0.3166	2.974727874e-09	4.52009205e-10	-4.52094217e-10
150.7477	0.3191	-0.3302	3.150024623e-09	4.69676062e-10	-4.69768292e-10
151.3420	0.2372	-0.2752	3.935355855e-09	5.97978418e-10	-5.980915e-10
151.8499	0.3484	-0.2707	3.256846612e-09	4.94875704e-10	-4.94968736e-10
152.5055	0.3013	-0.3072	3.361882948e-09	5.01248396e-10	-5.01341829e-10
153.0412	0.2833	-0.2344	3.894708089e-09	5.91779359e-10	-5.9188402e-10
153.6039	0.2668	-0.2794	3.638370443e-09	5.63483195e-10	-5.63578633e-10
154.1757	0.3746	-0.3050	2.924077163e-09	4.52852909e-10	-4.52927495e-10
154.8311	0.2316	-0.2808	3.935282873e-09	5.9794714e-10	-5.98054207e-10
155.3859	0.3297	-0.3232	3.132867838e-09	4.67106855e-10	-4.67195476e-10
156.2405	0.4234	-0.5249	2.094190019e-09	3.24339226e-10	-3.243965289e-10
156.9759	0.2858	-0.3119	3.319229781e-09	5.14058742e-10	-5.1414616e-10
157.5225	0.2960	-0.2608	3.510862067e-09	5.54311122e-10	-5.54401347e-10
158.1197	0.3358	-0.3012	3.206871185e-09	4.78128741e-10	-4.78214956e-10
158.7794	0.2525	-0.3240	3.543299358e-09	5.28296247e-10	-5.28394091e-10
159.4099	0.3496	-0.3780	2.80688371e-09	4.18502447e-10	-4.18581043e-10
160.0184	0.3105	-0.2588	3.986168971e-09	5.63848105e-10	-5.63967603e-10
160.7078	0.4448	-0.3789	2.444162769e-09	3.713737992e-10	-3.714383602e-10
161.4185	0.3088	-0.2659	3.898523604e-09	5.60899552e-10	-5.61008624e-10
162.0520	0.3673	-0.3248	2.909097407e-09	4.42028716e-10	-4.42109718e-10
162.7929	0.3417	-0.3735	2.855776036e-09	4.25787815e-10	-4.25866812e-10
163.5829	0.4110	-0.4483	2.342979642e-09	3.560010632e-10	-3.560634989e-10
164.3684	0.3993	-0.3746	2.639168267e-09	3.934834154e-10	-3.935528686e-10
165.1826	0.3698	-0.4148	2.603227439e-09	3.881217246e-10	-3.881889322e-10
165.8621	0.2881	-0.3097	3.416711277e-09	5.09400325e-10	-5.09486139e-10
166.4950	0.3241	-0.3449	3.053236055e-09	4.55212794e-10	-4.55290588e-10
167.1168	0.3588	-0.2977	3.107024591e-09	4.63240413e-10	-4.63323019e-10
167.9269	0.3280	-0.4513	2.578138874e-09	3.917307246e-10	-3.917989347e-10
168.6534	0.4590	-0.3986	2.342836886e-09	3.559781661e-10	-3.560401607e-10
169.4817	0.3298	-0.3693	2.831856787e-09	4.38576507e-10	-4.38651093e-10
170.3226	0.3625	-0.5110	2.299846879e-09	3.49449846e-10	-3.495120411e-10
171.0511	0.3848	-0.3660	2.714614813e-09	4.04740528e-10	-4.04815515e-10
171.8425	0.4812	-0.4066	2.29572901e-09	3.422818106e-10	-3.423434844e-10
172.7427	0.4883	-0.4190	2.246244006e-09	3.349012853e-10	-3.349605932e-10
173.6685	0.5161	-0.4375	2.137268647e-09	3.186625898e-10	-3.187222185e-10
174.5577	0.3974	-0.3730	2.607927961e-09	3.962787463e-10	-3.963546155e-10
175.4419	0.4649	-0.4869	2.141280652e-09	3.192695835e-10	-3.193321395e-10
176.3951	0.5045	-0.4883	2.052992883e-09	3.061034703e-10	-3.061628183e-10
177.420	0.494	-0.521	1.982421294e-09	3.012277113e-10	-3.012841721e-10
178.3797	0.4947	-0.4660	2.129188096e-09	3.174761912e-10	-3.175407522e-10
179.3310	0.4934	-0.4566	2.091721864e-09	3.239630078e-10	-3.24022035e-10
180.446	0.542	-0.621	1.70791915e-09	2.645315998e-10	-2.645823664e-10
181.450	0.621	-0.462	1.861018544e-09	2.828076159e-10	-2.828660416e-10
182.765	0.765	-0.694	1.382152765e-09	2.100260758e-10	-2.100676194e-10
184.142	0.564	-0.612	1.714634697e-09	2.60554562e-10	-2.606072133e-10
185.468	0.733	-0.762	1.368765781e-09	2.041019825e-10	-2.041452905e-10
186.900	0.665	-0.699	1.49906231e-09	2.235267032e-10	-2.235734598e-10
188.377	0.703	-0.811	1.333820235e-09	2.02699485e-10	-2.027421915e-10
189.572	0.698	-0.492	1.698682516e-09	2.581393791e-10	-2.581928725e-10
191.078	0.684	-0.809	1.354508627e-09	2.058399566e-10	-2.058829438e-10
192.439	0.603	-0.677	1.580623304e-09	2.402088245e-10	-2.402596713e-10
193.791	0.711	-0.749	1.404239043e-09	2.094198039e-10	-2.094666808e-10
195.231	0.766	-0.729	1.372507913e-09	2.046816681e-10	-2.047272618e-10
196.801	0.801	-0.804	1.278125746e-09	1.906070092e-10	-1.906494751e-10
198.368	0.825	-0.767	1.27526421e-09	1.938126032e-10	-1.938541869e-10
199.828	0.727	-0.634	1.533590014e-09	2.33087265e-10	-2.331377108e-10
201.462	0.934	-0.907	1.149905595e-09	1.714972339e-10	-1.715357299e-10
203.028	0.616	-0.631	1.697838411e-09	2.532271692e-10	-2.532839909e-10
204.507	0.807	-0.864	1.249409334e-09	1.899034948e-10	-1.89944477e-10
206.084	0.699	-0.770	1.440890443e-09	2.148873186e-10	-2.149353985e-10
207.617	1.044	-0.833	1.128117661e-09	1.682369836e-10	-1.682745172e-10
209.659	0.971	-0.998	1.063280372e-09	1.585981466e-10	-1.586331539e-10
211.562	1.304	-0.932	9.08963542e-10	1.381631465e-10	-1.381927804e-10
214.203	1.371	-1.337	7.39835376e-10	1.146256896e-10	-1.146491882e-10
216.818	1.556	-1.244	7.04889429e-10	1.11330833e-10	-1.113529281e-10
219.590	1.506	-1.216	7.50352002e-10	1.140652119e-10	-1.140889912e-10
222.307	1.409	-1.210	8.11735478e-10	1.21074732e-10	-1.211016792e-10
225.035	1.220	-1.320	8.36736625e-10	1.248142174e-10	-1.248413651e-10
227.564	1.704	-1.308	7.05771629e-10	1.052774573e-10	-1.053003945e-10
230.471	1.149	-1.203	8.71638863e-10	1.350623739e-10	-1.350887597e-10
233.619	2.459	-1.999	3.877001533e-10	6.49107121e-11	-6.49212183e-11
237.624	2.107	-1.545	3.764297676e-10	6.8757465e-11	-6.87673296e-11
242.130	2.339	-2.399	4.29576864e-10	6.53099878e-11	-6.53229e-11
246.268	1.753	-1.800	5.73362231e-10	8.71694201e-11	-8.71867032e-11
250.298	2.026	-2.276	3.202567252e-10	5.85008474e-11	-5.85088674e-11
254.461	1.908	-2.138	3.333670192e-10	6.2649433e-11	-6.26577738e-11
258.061	2.006	-1.691	3.7371195e-10	7.16736573e-11	-7.16824793e-11
262.481	2.508	-2.415	2.800344202e-10	5.11522818e-11	-5.11594196e-11
266.647	2.267	-1.657	3.513845106e-10	6.41897542e-11	-6.41982153e-11
271.017	1.983	-2.104	3.302405826e-10	6.20632111e-11	-6.20713113e-11
275.719	2.621	-2.718	2.641960831e-10	4.82549365e-11	-4.82619941e-11
281.102	2.241	-2.762	2.826536319e-10	5.16294718e-11	-5.163677e-11
286.791	3.499	-3.448	1.900133688e-10	3.675147356e-11	-3.675620536e-11
294.028	3.487	-3.738	1.863155072e-10	3.501353154e-11	-3.501823928e-11
NO	NO	NO	NO	NO
! PC data
!Time    	T_+ve   	T_-ve   	Flux    	Fluxpos 	Fluxneg
312.931	10.357	-9.701	1.025813739e-10	2.144163441e-11	-2.144163441e-11
332.711	8.129	-9.422	1.11576646e-10	2.388905771e-11	-2.388905771e-11
354.281	16.646	-13.442	5.85017697e-11	1.317930209e-11	-1.317930209e-11
394.663	26.410	-23.736	3.554882243e-11	7.97859675e-12	-7.97859675e-12
448.734	40.037	-27.661	2.767793027e-11	6.05588596e-12	-6.05588596e-12
538.973	55.104	-50.203	9.37207977e-12	2.115789483e-12	-2.115789483e-12
649.783	104.762	-55.706	6.17081256e-12	1.390418578e-12	-1.390418578e-12
830.913	89.115	-76.368	5.95659836e-12	1.347317494e-12	-1.347317494e-12
1061.581	179.382	-141.554	2.260796296e-12	6.02848964e-13	-6.02848964e-13
1385.274	239.304	-144.310	3.693484284e-12	7.01510202e-13	-7.01510202e-13
4966.167	99.514	-161.247	2.943701301e-12	7.60738303e-13	-7.60738303e-13
5164.708	106.573	-99.027	3.558901466e-12	9.36595249e-13	-9.36595249e-13
5372.149	114.761	-100.867	4.48196096e-12	1.018139401e-12	-1.018139401e-12
5577.068	107.919	-90.158	3.684862784e-12	9.63884903e-13	-9.63884903e-13
5790.288	85.256	-105.300	3.864647124e-12	1.012953268e-12	-1.012953268e-12
5986.722	89.406	-111.179	3.664483162e-12	9.51843675e-13	-9.51843675e-13
6166.225	123.024	-90.097	3.689001906e-12	9.36211893e-13	-9.36211893e-13
6424.567	170.565	-135.318	2.7122838e-12	6.65413786e-13	-6.65413786e-13
10844.818	178.782	-154.691	2.277965913e-12	6.03147308e-13	-6.03147308e-13
11233.375	299.209	-209.776	1.503646141e-12	3.933463937e-13	-3.933463937e-13
11764.026	217.360	-231.442	2.713674067e-12	5.61854734e-13	-5.61854734e-13
16473.548	96.846	-113.769	3.668791105e-12	9.59505582e-13	-9.59505582e-13
16779.654	156.808	-209.260	2.145192006e-12	5.60721508e-13	-5.60721508e-13
17095.655	146.700	-159.193	2.561187401e-12	6.71338962e-13	-6.71338962e-13
17428.603	132.180	-186.249	2.446708317e-12	6.40611134e-13	-6.40611134e-13
17747.053	112.100	-186.270	2.641116726e-12	6.86497965e-13	-6.86497965e-13
18238.081	320.600	-378.928	1.637141046e-12	3.542591192e-13	-3.542591192e-13
34216.943	455.800	-604.788	1.181552114e-12	2.440386552e-13	-2.440386552e-13
75592.285	467.895	-528.524	1.00688694e-12	2.462318846e-13	-2.462318846e-13
81149.039	731.265	-642.736	8.56883667e-13	2.167827654e-13	-2.167827654e-13
98291.609	508.541	-379.043	6.68478228e-13	2.241111206e-13	-1.846273774e-13