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Image
Pre-slew 15.0-350.0 keV image (Event data)
 
#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  230.0560     0.6218   0.0247    30.7640   -98.9325         1.5354404      7.821 TRIG_00563980                 
 
Foreground time interval of the image:
 -9.832 103.400 (delta_t = 113.232 [sec])
Background time interval of the image:
-239.368  -9.832 (delta_t = 229.536 [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 8.192000
 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 8.192000
 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 8.192000
 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)
 
 The mask-weighted light curves based on cleaned DPHs 
 
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   -9.832 sec. to  103.400 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.60299     ( -0.299385   0.303868 )
Norm@50keV  : 9.23266E-04    ( -0.000147323   0.0001452 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.02 using 59 PHA bins.
# Reduced chi-squared =         0.9829 for     57 degrees of freedom 
# Null hypothesis probability =   5.116970e-01
 
Photon flux (15-150 keV)    in 113.2 sec: 0.118754 ( -0.0189952  0.0190817 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.77074e-07 ( -1.65992e-07  1.68289e-07 ) ergs/cm2
 
Cutoff power-law model
 
Time interval is from   -9.832 sec. to  103.400 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.61558     ( -0.603992   0.292436 )
Epeak [keV] : 9999.35      ( -9999.36 -9999.36 )
Norm@50keV  : 9.18506E-04    ( -0.000146129   0.00083812 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.04 using 59 PHA bins.
# Reduced chi-squared =          1.001 for     56 degrees of freedom 
# Null hypothesis probability =   4.733010e-01
 
Photon flux (15-150 keV)    in 113.2 sec: 0.119467 ( -0.0197172  0.018483 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.75141e-07 ( -1.63901e-07  1.70296e-07 ) ergs/cm2
 
Band function
 
Time interval is from   -9.832 sec. to  103.400 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.25182   ( 1.25179   6.23808 )
beta        : -1.60307    ( 1.60317   0.300153 )
Epeak [keV] : 34.3751      ( -34.6977 -34.6977 )
Norm@50keV   : 1.95162E-03    ( -0.00102563   140570 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.02 using 59 PHA bins.
# Reduced chi-squared =          1.019 for     55 degrees of freedom 
# Null hypothesis probability =   4.362349e-01
 
Photon flux (15-150 keV)    in 113.2 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]    : 14.1724  (-3.35726  4.62058)
R^2/D10^2   : 1.50188E-02  (-0.0148187   0.0248294)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          75.18 using 59 PHA bins.
# Reduced chi-squared =          1.319 for     57 degrees of freedom 
# Null hypothesis probability =   5.364167e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.205e-08   2.264e-08
25- 50  2.712e-07   7.737e-08
50-150  3.609e-07   1.166e-07
15-150  7.042e-07   1.945e-07
Thermal bremsstrahlung (OTTB)
 
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-106.348      -199.363)
Norm        : 0.475112       (-0.0728113     0.0922042)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.45 using 59 PHA bins.
# Reduced chi-squared =          1.008 for     57 degrees of freedom 
# Null hypothesis probability =   4.584847e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.339e-07   7.562e-08
25- 50  2.576e-07   1.462e-07
50-150  5.650e-07   3.232e-07
15-150  9.566e-07   5.384e-07
Double BB
 
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.72407        (-2.00505      2.82059)
R1^2/D10^2  : 0.183641        (-0.130977      0.418132)
kT2 [keV]   : 39.1123        (-16.6451      -39.1806)
R2^2/D10^2  : 4.28477E-04    (-0.000373237   0.00203444)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.78 using 59 PHA bins.
# Reduced chi-squared =         0.9961 for     55 degrees of freedom 
# Null hypothesis probability =   4.828120e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.543e-07   8.677e-08
25- 50  2.488e-07   1.298e-07
50-150  6.389e-07   3.568e-07
15-150  1.042e-06   4.939e-07
Peak spectrum fit
Power-law model
 
Time interval is from    2.972 sec. to    3.972 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.15835     ( -0.787642   0.702017 )
Norm@50keV  : 4.92765E-03    ( -0.00171275   0.00160687 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.29 using 59 PHA bins.
# Reduced chi-squared =          1.180 for     57 degrees of freedom 
# Null hypothesis probability =   1.654217e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.575179 ( -0.203167  0.206067 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.0605e-08 ( -1.75156e-08  1.76639e-08 ) ergs/cm2
 
Cutoff power-law model
 
Time interval is from    2.972 sec. to    3.972 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.19831     ( -1.06169   0.666357 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 4.91767E-03    ( -0.00172779   0.011335 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.31 using 59 PHA bins.
# Reduced chi-squared =          1.202 for     56 degrees of freedom 
# Null hypothesis probability =   1.431764e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.585280 ( -0.213651  0.197129 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.02741e-08 ( -1.70813e-08  1.73108e-08 ) ergs/cm2
 
Band function
 
Time interval is from    2.972 sec. to    3.972 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.951315   ( 0.951269   0.951269 )
beta        : -1.15828    ( 1.15801   0.787937 )
Epeak [keV] : 45.5685      ( -45.5088 -45.5088 )
Norm@50keV   : 8.64418E-03    ( -0.00529585   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.29 using 59 PHA bins.
# Reduced chi-squared =          1.223 for     55 degrees of freedom 
# Null hypothesis probability =   1.237319e-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]    : 29.2010  (-14.5904  48.328)
R^2/D10^2   : 7.74058E-03  (-0.00763647   0.0587946)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.81 using 59 PHA bins.
# Reduced chi-squared =          1.260 for     57 degrees of freedom 
# Null hypothesis probability =   8.946970e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.050e-09   6.870e-10
25- 50  6.403e-09   4.069e-09
50-150  3.896e-08   2.402e-08
15-150  4.641e-08   2.952e-08
Thermal bremsstrahlung (OTTB)
 
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-119.842      -199.363)
Norm        : 2.43606       (-0.806541     0.806541)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.90 using 59 PHA bins.
# Reduced chi-squared =          1.209 for     57 degrees of freedom 
# Null hypothesis probability =   1.342704e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.066e-09   3.867e-09
25- 50  1.167e-08   7.035e-09
50-150  2.559e-08   1.609e-08
15-150  4.333e-08   2.673e-08
Double BB
 
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.77158        (-2.82771      5.65901)
R1^2/D10^2  : 1.54084        (-1.46319      33.9945)
kT2 [keV]   : 52.5906        (-30.283      -52.5917)
R2^2/D10^2  : 1.45928E-03    (-0.00137538   0.00383328)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.43 using 59 PHA bins.
# Reduced chi-squared =          1.190 for     55 degrees of freedom 
# Null hypothesis probability =   1.586172e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.860e-09   4.159e-09
25- 50  8.987e-09   5.095e-09
50-150  4.014e-08   2.302e-08
15-150  5.599e-08   2.866e-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: 1.60299     ( -0.299385   0.303868 )
Norm@50keV  : 9.23266E-04    ( -0.000147323   0.0001452 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.02 using 59 PHA bins.
# Reduced chi-squared =         0.9829 for     57 degrees of freedom 
# Null hypothesis probability =   5.116970e-01
 
Photon flux (15-150 keV)    in 113.2 sec: 0.118754 ( -0.0189952  0.0190817 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.77074e-07 ( -1.65992e-07  1.68289e-07 ) ergs/cm2
 
Cutoff power-law model
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.61558     ( -0.603992   0.292436 )
Epeak [keV] : 9999.35      ( -9999.36 -9999.36 )
Norm@50keV  : 9.18506E-04    ( -0.000146129   0.00083812 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.04 using 59 PHA bins.
# Reduced chi-squared =          1.001 for     56 degrees of freedom 
# Null hypothesis probability =   4.733010e-01
 
Photon flux (15-150 keV)    in 113.2 sec: 0.119467 ( -0.0197172  0.018483 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.75141e-07 ( -1.63901e-07  1.70296e-07 ) ergs/cm2
 
Band function
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.25182   ( 1.25179   6.23808 )
beta        : -1.60307    ( 1.60317   0.300153 )
Epeak [keV] : 34.3751      ( -34.6977 -34.6977 )
Norm@50keV   : 1.95162E-03    ( -0.00102563   140570 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.02 using 59 PHA bins.
# Reduced chi-squared =          1.019 for     55 degrees of freedom 
# Null hypothesis probability =   4.362349e-01
 
Photon flux (15-150 keV)    in 113.2 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)  = 2.54e-07
S(50-100 keV) = 3.34e-07
 T90 vs. Hardness ratio plot 
 
T90                                   = 101.520000040531 sec.
Hardness ratio (energy fluence ratio) = 1.31496
 Color vs. Color plot 
 
Count Ratio  (25-50 keV) / (15-25 keV) = 1.01237
Count Ratio (50-100 keV) / (15-25 keV) = 0.765021
 Mask shadow pattern 
 
IMX = -9.242808461085956E-02, IMY = 5.880481593022540E-01
 TIME vs. PHA plot around the trigger time 
 
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
 TIME vs. DetID plot around the trigger time 
 
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
 100 us light curve (15-350 keV)
 
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
 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:
-239.368000 -9.832000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9882 -15.6435    0.2  19.9 -145.6  11.3759  53.1    0.5	Sco X-1                       
254.4578  35.3425  413.1  38.8  -23.2   0.0078   0.0    0.0	Her X-1                       
256.0140 -37.8332    9.6  35.1  171.2   0.3186   1.2    1.5	4U 1700-377                   
256.4580 -36.4055    2.2  33.6  170.9   1.3636   5.3    1.5	GX 349+2                      
263.0539 -24.7547    2.4  21.9  158.9   0.9973   4.8    2.5	GX 1+4                        
264.9764 -44.3274    0.0  41.5  160.1  -1.0201  -2.5   12.4	4U 1735-44                    
268.2611  -1.2696    0.0   7.8   62.4   0.0947   0.5   12.7	SW J1753.5-0127               
270.3495 -25.0713    1.7  24.0  142.7   1.7031   6.9    3.6	GX 5-1                        
270.3184 -25.7181    4.5  24.6  143.4   0.6399   2.6    1.7	GRS 1758-258                  
273.9744 -13.9686    3.8  17.2  115.4   0.6222   3.0    4.5	GX 17+2                       
276.0337 -30.5191    9.2  31.2  138.6   0.3743   1.3   10.7	H1820-303                     
285.0115 -25.0523    4.3  32.2  120.3   0.9526   2.7    8.0	HT1900.1-2455                 
288.7663  10.9436    1.2  31.3   48.0   2.9124   9.5    1.9	GRS 1915+105                  
299.5455  35.1749   11.9  52.8   25.0   1.0280   1.0    2.7	Cyg X-1                       
262.8209 -33.8424    6.1  30.9  161.3   0.4816   1.9    8.4	GX 354-0                      
225.7647  24.4819    3.2  43.6  -64.1   4.1474   3.6 ------	UNKNOWN                       
219.7413   1.7580    3.7  41.1  -99.1   3.9949   3.1 ------	UNKNOWN                       
217.6091  -6.7886    2.8  43.0 -111.9   4.4950   4.1 ------	UNKNOWN                       
 Pre-slew background subtracted image of 15-350 keV band 
Time interval of the image:
-9.832000 103.400000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9008 -15.6344    2.9  20.0 -145.4   0.5235   4.0    4.6	Sco X-1                       
254.3643  35.4982   10.9  38.9  -23.3  -0.1798  -1.1   10.4	Her X-1                       
255.9143 -37.6735    4.9  35.0  171.3   0.3868   2.4   10.8	4U 1700-377                   
256.5182 -36.3488    9.0  33.6  170.8  -0.2060  -1.3    6.0	GX 349+2                      
263.1572 -24.6244    5.7  21.8  158.6  -0.2588  -2.0   10.9	GX 1+4                        
264.7255 -44.4018    5.9  41.6  160.4   0.4466   1.9    3.0	4U 1735-44                    
268.4750  -1.6355    0.0   8.0   65.3   0.1500   1.2   12.7	SW J1753.5-0127               
270.2701 -24.9835    9.6  23.9  142.8  -0.1661  -1.2    5.8	GX 5-1                        
270.2734 -25.6660    5.8  24.5  143.5  -0.2845  -2.0    4.9	GRS 1758-258                  
273.8758 -14.1571    7.4  17.2  116.1   0.2031   1.6   10.5	GX 17+2                       
275.8867 -30.2214    6.3  30.8  138.5   0.3201   1.8    9.0	H1820-303                     
284.8881 -24.8590   11.2  32.0  120.1   0.2186   1.0    8.9	HT1900.1-2455                 
288.9087  11.0513    5.1  31.4   47.9   0.4328   2.3    9.1	GRS 1915+105                  
299.5098  35.3618    7.7  52.9   24.8  -0.9889  -1.5   10.4	Cyg X-1                       
262.7808 -33.9495    0.0  31.0  161.3  -0.3275  -2.2   12.5	GX 354-0                      
287.6641 -17.3816    2.5  30.2  105.2   0.9667   4.5 ------	UNKNOWN                       
286.8274  36.7721    2.2  46.6   13.9   1.4519   5.2 ------	UNKNOWN                       
237.3271 -23.0008    2.3  30.2 -148.7   0.6728   5.0 ------	UNKNOWN                       
230.0560   0.6218    1.5  30.8  -98.9   1.5349   7.8 ------	UNKNOWN                       
215.0280 -36.1822    2.3  53.5 -149.3   2.3735   5.1 ------	UNKNOWN                       
 Post-slew image of 15-350 keV band 
Time interval of the image:
518.932600 962.702300
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4390  35.3884    8.1  57.8 -177.7  -2.1910  -1.4    2.9	Her X-1                       
299.6246  35.1770    1.9  25.1  155.6   1.7978   6.1    2.2	Cyg X-1                       
308.0900  40.9566    0.9  16.9  164.9   3.0861  13.2    0.9	Cyg X-3                       
326.2711  38.4288    2.3   5.1  114.5   1.1720   4.9    7.9	Cyg X-2                       
353.4634  15.6596    2.3  33.0   28.4   1.6405   5.0 ------	UNKNOWN                       
312.8503  28.2875    2.6  20.1  123.4   1.1800   4.5 ------	UNKNOWN                       
257.0057  33.6614    3.2  56.9  179.2   5.9724   3.5 ------	UNKNOWN                       
 39.9136  24.3719    2.9  58.9  -24.3   7.6391   3.9 ------	UNKNOWN                       
 41.6120  42.6677    4.6  50.7  -44.5   3.5432   2.5 ------	UNKNOWN                       
Plot creation:
Sat May 30 16:05:49 EDT 2015