Click here for the BAT GCN circular template 
Image
Pre-slew 15.0-350.0 keV image (Event data)
 
#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  266.2199    15.8356   0.0111    38.2124   166.0697         2.7812294     17.184 TRIG_00419404                 
 
Foreground time interval of the image:
 -3.408  64.021 (delta_t =  67.429 [sec])
Background time interval of the image:
-239.080  -3.408 (delta_t = 235.672 [sec])
Lightcurves
Notes:
- 1) The mask-weighted light curves are using the flight position.
- 2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
- 4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
- 5) Time of each bin is in the middle of the bin.
 1 s binning
 From T0-310 s to T0+310 s 
 
 From T100_start - 20 s to T100_end + 30 s 
 
 Full time interval 
 
 64 ms binning
 Full time interval 
 
 From T100_start to T100_end 
 
 From T0-5 sec to T0+5 sec 
 
 16 ms binning
 From T100_start-5 s to T100_start+5 s 
 
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000
 8 ms binning
 From T100_start-3 s to T100_start+3 s
 
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000
 2 ms binning
 From T100_start-1 s to T100_start+1 s
 
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000
 SN=5 or 10 sec. binning (whichever binning is satisfied first)
 
 SN=5 or 10 sec. binning (T < 200 sec) 
 
 Quad-rate summed light curves (from T0-300s to T0+1000s)
 
Spectral Evolution
 
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
- 3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
Time averaged spectrum fit using the average DRM
Power-law model
 
Time interval is from   -3.408 sec. to  223.068 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.09722     ( -0.0697919   0.0690107 )
Norm@50keV  : 2.60687E-03    ( -9.59708e-05   9.56086e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.97 using 59 PHA bins.
# Reduced chi-squared =         0.9644 for     57 degrees of freedom 
# Null hypothesis probability =   5.516766e-01
 
Photon flux (15-150 keV)    in 226.5 sec: 0.302297 ( -0.0118406  0.0118831 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.17883e-06 ( -2.27023e-07  2.27614e-07 ) ergs/cm2
 
Cutoff power-law model
 
Time interval is from   -3.408 sec. to  223.068 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.09399     ( -0.0724982   0.0674622 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 2.62162E-03    ( -4.89278e-05   0.000420925 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.03 using 59 PHA bins.
# Reduced chi-squared =         0.9827 for     56 degrees of freedom 
# Null hypothesis probability =   5.115448e-01
 
Photon flux (15-150 keV)    in 226.5 sec: 0.302451 ( -0.012142  0.011606 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.17706e-06 ( -2.23918e-07  2.26591e-07 ) ergs/cm2
 
Band function
 
Time interval is from   -3.408 sec. to  223.068 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.880262   ( 0.880259   0.880259 )
beta        : -1.09720    ( -0.0689726   0.0698689 )
Epeak [keV] : 52.5211      ( -52.5236 -52.5236 )
Norm@50keV   : 4.57434E-03    ( -0.00168372   119063 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.97 using 59 PHA bins.
# Reduced chi-squared =         0.9994 for     55 degrees of freedom 
# Null hypothesis probability =   4.758318e-01
 
Photon flux (15-150 keV)    in 226.5 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 23.6093  (  )
R^2/D10^2   : 8.14956E-03  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         210.89 using 59 PHA bins.
# Reduced chi-squared =         3.6998 for     57 degrees of freedom 
# Null hypothesis probability =   1.621762e-19
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.841e-07   1.451e-08
25- 50  1.013e-06   5.844e-08
50-150  4.213e-06   2.299e-07
15-150  5.411e-06   2.220e-07
Thermal bremsstrahlung (OTTB)
 
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 1.30986       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         198.07 using 59 PHA bins.
# Reduced chi-squared =         3.4750 for     57 degrees of freedom 
# Null hypothesis probability =   1.793719e-17
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.388e-07   2.899e-08
25- 50  1.421e-06   5.311e-08
50-150  3.117e-06   1.166e-07
15-150  5.277e-06   2.061e-07
Double BB
 
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.96953        (-0.988495      1.14718)
R1^2/D10^2  : 0.254623        (-0.106671      0.200956)
kT2 [keV]   : 33.8924        (-3.31599      4.50433)
R2^2/D10^2  : 2.38614E-03    (-0.000758047   0.000917422)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.36 using 59 PHA bins.
# Reduced chi-squared =         0.9519 for     55 degrees of freedom 
# Null hypothesis probability =   5.763138e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.378e-07   9.298e-08
25- 50  1.189e-06   1.249e-07
50-150  4.547e-06   3.296e-07
15-150  6.274e-06   4.677e-07
Peak spectrum fit
Power-law model
 
Time interval is from  116.780 sec. to  117.780 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.672348     ( -0.400736   0.353862 )
Norm@50keV  : 5.53998E-03    ( -0.00120543   0.00113633 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.83 using 59 PHA bins.
# Reduced chi-squared =         0.9620 for     57 degrees of freedom 
# Null hypothesis probability =   5.568173e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.641868 ( -0.124073  0.125303 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.8479e-08 ( -1.29507e-08  1.30161e-08 ) ergs/cm2
 
Cutoff power-law model
 
Time interval is from  116.780 sec. to  117.780 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.664205     ( -1.04918   0.442813 )
Epeak [keV] : 1.00000E+04      (   )
Norm@50keV  : 5.58288E-03    ( -0.00120732   -0.00558337 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.85 using 59 PHA bins.
# Reduced chi-squared =         0.9794 for     56 degrees of freedom 
# Null hypothesis probability =   5.185142e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.644150 ( -0.126235  0.12292 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.81521e-08 ( -1.26559e-08  1.32494e-08 ) ergs/cm2
 
Band function
 
Time interval is from  116.780 sec. to  117.780 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -5   -5 )
beta        : -0.679760    ( -0.355964   0.402049 )
Epeak [keV] : 21.4073      ( -19.0344 -19.0344 )
Norm@50keV   : 660.130    ( -126.463   843979 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.78 using 59 PHA bins.
# Reduced chi-squared =         0.9960 for     55 degrees of freedom 
# Null hypothesis probability =   4.829236e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 29.3155  (-7.81563  15.049)
R^2/D10^2   : 1.02633E-02  (-0.00685205   0.015361)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.59 using 59 PHA bins.
# Reduced chi-squared =          1.063 for     57 degrees of freedom 
# Null hypothesis probability =   3.475382e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.399e-09   5.761e-10
25- 50  8.550e-09   3.589e-09
50-150  5.236e-08   1.898e-08
15-150  6.231e-08   2.228e-08
Thermal bremsstrahlung (OTTB)
 
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 2.60047       (-0.523849     0.523783)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.03 using 59 PHA bins.
# Reduced chi-squared =          1.264 for     57 degrees of freedom 
# Null hypothesis probability =   8.664641e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.480e-09   3.759e-09
25- 50  1.247e-08   7.240e-09
50-150  2.734e-08   1.581e-08
15-150  4.629e-08   2.679e-08
Double BB
 
R1^2/D10^2  : 6.28142E-02        (      )
kT2 [keV]   : 200.000        (      )
R2^2/D10^2  : 1.59452E-04    (-7.51819e-05   5.21785e-05)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.79 using 59 PHA bins.
#Fit statistic : Chi-Squared =          53.29 using 59 PHA bins.
#Fit statistic : Chi-Squared =          53.23 using 59 PHA bins.
# Reduced chi-squared =         0.9781 for     55 degrees of freedom 
# Reduced chi-squared =         0.9690 for     55 degrees of freedom 
# Reduced chi-squared =         0.9678 for     55 degrees of freedom 
# Null hypothesis probability =   5.208160e-01
# Null hypothesis probability =   5.400328e-01
# Null hypothesis probability =   5.424893e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.860e-09   1.640e-09
25- 50  1.110e-08   6.565e-09
50-150  5.506e-08   4.037e-08
15-150  6.902e-08   4.123e-08
Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)
Power-law model
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.910928     ( -0.149789   0.14417 )
Norm@50keV  : 2.70738E-03    ( -0.000231253   0.000227245 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.72 using 59 PHA bins.
# Reduced chi-squared =         0.8022 for     57 degrees of freedom 
# Null hypothesis probability =   8.580298e-01
 
Photon flux (15-150 keV)    in 67.43 sec: 0.310773 ( -0.0264413  0.0267398 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.04016e-06 ( -1.53555e-07  1.53752e-07 ) ergs/cm2
 
Cutoff power-law model
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.822594     ( -0.607243   0.218075 )
Epeak [keV] : 875.949      ( -875.907 -875.907 )
Norm@50keV  : 2.92438E-03    ( -0.000365584   0.00191633 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.65 using 59 PHA bins.
# Reduced chi-squared =         0.8152 for     56 degrees of freedom 
# Null hypothesis probability =   8.368670e-01
 
Photon flux (15-150 keV)    in 67.43 sec: 0.309507 ( -0.029352  0.027802 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.03653e-06 ( -1.57186e-07  1.5639e-07 ) ergs/cm2
 
Band function
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.98906   ( 0.822496   1.98906 )
beta        : -0.910625    ( -0.14427   0.149799 )
Epeak [keV] : 9998.95      ( -9996.1 -9996.1 )
Norm@50keV   : 2.70706E-03    ( 0.822496   -0.00270716 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.72 using 59 PHA bins.
# Reduced chi-squared =         0.8313 for     55 degrees of freedom 
# Null hypothesis probability =   8.092576e-01
 
Photon flux (15-150 keV)    in 67.43 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
 S(25-50 keV) vs. S(50-100 keV) plot 
 
S(25-50 keV)  = 1.22e-06
S(50-100 keV) = 2.28e-06
 T90 vs. Hardness ratio plot 
 
T90                                   = 192.63999992609 sec.
Hardness ratio (energy fluence ratio) = 1.86885
 Color vs. Color plot 
 
Count Ratio  (25-50 keV) / (15-25 keV) = 1.45161
Count Ratio (50-100 keV) / (15-25 keV) = 1.59507
 Mask shadow pattern 
 
IMX = -7.641177845530357E-01, IMY = -1.895293253531387E-01
 TIME vs. PHA plot around the trigger time 
 
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000
 TIME vs. DetID plot around the trigger time 
 
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000
 100 us light curve (15-350 keV)
 
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000
 Spacecraft aspect plot 
 
 Bright source in the pre-burst/pre-slew/post-slew images 
 Pre-burst image of 15-350 keV band 
Time interval of the image:
-239.080000 -3.408000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9843 -15.6378    0.3  22.8   92.0  12.8548  43.4    0.3	Sco X-1                       
256.0664 -37.7453    3.0  18.5   20.1   0.8745   3.9    7.0	4U 1700-377                   
256.3747 -36.4705    3.8  17.4   22.0   0.6832   3.1    4.1	GX 349+2                      
263.1683 -24.7845   11.8   5.1   49.3   0.1982   1.0    9.0	GX 1+4                        
264.6151 -44.3079    8.5  22.2   -4.5  -0.3151  -1.4   10.1	4U 1735-44                    
268.3279  -1.4303   10.9  20.9  169.7   0.2423   1.1    2.8	SW J1753.5-0127               
270.2620 -25.0644    1.9   3.4  -47.0   1.4424   6.1    1.5	GX 5-1                        
270.3016 -25.6859    5.5   3.9  -42.0   0.5316   2.3    3.4	GRS 1758-258                  
273.9199 -14.0709    2.9  10.0 -156.1   0.9580   3.9    5.4	GX 17+2                       
275.7293 -30.4955    0.0  10.7  -49.5   0.4229   1.8   12.7	H1820-303                     
284.9803 -24.8146   18.7  15.7  -88.6   0.1424   0.6    7.0	HT1900.1-2455                 
288.8278  10.9117    2.0  39.0 -157.5   2.2155   5.7    2.7	GRS 1915+105                  
262.9330 -33.7513   29.3  12.3    9.4  -0.0936  -0.4    5.7	GX 354-0                      
231.5467 -63.2112    2.3  47.6   10.2   2.3781   5.0 ------	UNKNOWN                       
255.6974 -48.7611    1.0  28.2    6.3   2.9702  11.2 ------	UNKNOWN                       
312.0093 -32.4634    3.0  40.0  -76.7   3.6974   4.0 ------	UNKNOWN                       
 Pre-slew background subtracted image of 15-350 keV band 
Time interval of the image:
-3.408000 64.020610
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
245.0681 -15.5815   14.6  22.7   92.2  -0.1129  -0.8    6.2	Sco X-1                       
255.8344 -37.7454    3.5  18.7   20.5   0.3328   3.3    9.3	4U 1700-377                   
256.4863 -36.5436   11.6  17.4   21.6  -0.1016  -1.0    7.6	GX 349+2                      
262.8632 -24.7528    4.1   5.3   51.0   0.2716   2.8    8.0	GX 1+4                        
264.7779 -44.4243    9.0  22.3   -4.9   0.1312   1.3    2.1	4U 1735-44                    
268.2665  -1.5863   38.2  20.7  169.5  -0.0297  -0.3   10.1	SW J1753.5-0127               
270.3805 -25.2428    5.9   3.6  -46.7   0.2813   2.9   11.1	GX 5-1                        
270.2058 -25.5802    5.5   3.8  -41.7   0.3398   3.5   11.1	GRS 1758-258                  
274.0102 -13.8854    5.3  10.2 -156.3   0.2040   2.2    9.1	GX 17+2                       
275.9259 -30.3391   45.7  10.7  -50.7   0.0254   0.3    1.7	H1820-303                     
284.8831 -24.7655    0.0  15.6  -88.8  -0.1843  -1.7   12.5	HT1900.1-2455                 
288.8372  11.0492   13.6  39.1 -157.6  -0.1159  -0.9    6.6	GRS 1915+105                  
263.1055 -34.0124    8.6  12.5    8.3  -0.1262  -1.3   12.1	GX 354-0                      
234.0814 -46.5065    2.4  36.5   29.2   0.7977   4.8 ------	UNKNOWN                       
266.2199  15.8356    0.7  38.2  166.1   2.7808  17.2 ------	UNKNOWN                       
278.9668  23.5301    2.5  47.1 -177.4   0.9642   4.6 ------	UNKNOWN                       
295.3630  -9.5797    2.1  29.1 -122.7   0.6990   5.4 ------	UNKNOWN                       
 Post-slew image of 15-350 keV band 
Time interval of the image:
128.820600 963.007800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9916 -15.6474    0.4  37.8   51.8  30.6731  28.7    0.8	Sco X-1                       
254.6561  35.3116    5.6  22.1  171.3   1.1151   2.1    9.9	Her X-1                       
263.0144 -24.7138    4.9  40.7   21.6   2.0007   2.4    1.9	GX 1+4                        
268.2858  -1.5061    3.8  17.4   10.3   1.5486   3.0    5.9	SW J1753.5-0127               
270.2843 -25.0790    2.6  41.1   11.5   3.7834   4.5    0.0	GX 5-1                        
270.3032 -25.7406   76.0  41.8   11.6   0.1324   0.2    0.2	GRS 1758-258                  
274.0243 -14.0540    1.6  30.9    2.3   4.1933   7.3    1.5	GX 17+2                       
275.9245 -30.4335   14.5  47.2    5.7  -0.8092  -0.8    4.0	H1820-303                     
285.1920 -25.0263    0.0  44.8   -7.5  -1.2510  -1.4   10.6	HT1900.1-2455                 
288.8019  10.9463    0.5  22.5  -63.1  12.7760  22.4    0.2	GRS 1915+105                  
299.5856  35.2104    0.4  35.5 -112.2  31.0656  31.5    0.6	Cyg X-1                       
308.1567  40.8736    2.4  44.0 -116.2  10.5864   4.8    5.2	Cyg X-3                       
262.9071 -33.8328   10.3  49.8   20.8   1.7397   1.1    4.1	GX 354-0                      
220.4891  48.2250    3.0  49.4  158.2   7.1779   3.8 ------	UNKNOWN                       
240.5718  21.1704    2.5  24.9  123.5   2.8901   4.6 ------	UNKNOWN                       
245.9394  13.7884    2.7  19.7  103.9   2.4877   4.3 ------	UNKNOWN                       
266.2195  15.8682    1.8   0.0 -172.8   3.8639   6.3 ------	UNKNOWN                       
237.7679  70.2878    3.8  57.2 -173.9  10.0554   3.1 ------	UNKNOWN                       
287.2001 -13.9407    3.5  36.3  -18.8   1.9586   3.3 ------	UNKNOWN                       
310.0166 -10.4425    3.8  50.7  -44.5   8.9572   3.0 ------	UNKNOWN                       
307.9718  44.7094    2.3  45.4 -121.2   9.8880   4.9 ------	UNKNOWN                       
Plot creation:
Sun May 31 01:53:50 EDT 2015