batgrbproduct Analysis for Trigger=652643

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Aug 20 04:19:07 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger652643/GCN5_download_cron
======================================================================

  Trigger: 00652643      Segment: 000

  BAT Trigger Time: 461638224   [s; MET]
      Trigger Stop: 461638288   [s; MET]
               UTC: 2015-08-19T00:50:08.987220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 42.336760697218   Dec: 9.78396975898111  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.26
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.26

  Flight Position:   [ source = BAT ]
    RA: 42.336760697218   Dec: 9.78396975898111  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 42.3183646129201   Dec: 9.78849796127067  [deg; J2000]  
        { 02h 49m 16.4s , +09d 47' 18.6" }
         +/- 2.49710286628119 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.10107887685605 [arcmin] (formal 1-sigma fit error)
    SNR: 8.22909444828654
 
  Angular difference between Flight and Ground position is 1.121123 arcmin
 
  Partial Coding Fraction: 0.9375    [ including projection effects ]

  Duration
     T90: 51.7120000720024 +/- 13.6750329753984
        Measured from: 17.1920000910759
                   to: 68.9040001630783     [s; relative to TRIGTIME]
     T50: 23.120000064373 +/- 10.7074941552983
        Measured from: 28.3760001063347
                   to: 51.4960001707077     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 17.6759999990463     
                   to: 18.6759999990463     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 13.9760000109673     
                   to: 73.4480000138283     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.264046   0.319732   0.175145   0.098470
           0.043360   0.044122   0.038233   0.033838 [error]
 Peak      0.016803   0.011375   0.007274   0.006764
           0.005552   0.005727   0.004839   0.004493 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 7.91e-08 1.27e-07 1.54e-07 3.64e-07 4.64e-07 7.24e-07   erg/cm2
              Error 1.82e-08 1.96e-08 3.66e-08 1.77e-07 8.62e-08 2.13e-07   erg/cm2
Peak flux Power-law 1.64e-01 1.02e-01 4.09e-02 2.20e-02 3.18e-01 3.29e-01   ph/cm2/s
              Error 8.48e-02 5.01e-02 3.72e-02 4.29e-02 1.32e-01 1.41e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.48e-08 1.37e-07 1.52e-07 1.31e-07 4.34e-07 4.95e-07   erg/cm2
              Error 2.05e-08 2.79e-08 4.22e-08 2.65e-07 1.01e-07 2.86e-07   erg/cm2
Peak flux Cutoff-PL 1.66e-01 1.01e-01 3.89e-02 1.98e-02 3.18e-01 3.28e-01   ph/cm2/s
              Error 1.05e-01 5.59e-02 -------- 4.28e-02 -------- 1.40e-01   ph/cm2/s
 
Fluence        Band 7.30e-08 1.40e-07 1.47e-07 2.29e-07 4.39e-07 5.90e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.724    0.276    -      -           8.44e-04 1.49e-04   45.290 57
CPL   1.112    1.200      62.8   -9.4      1.88e-03 6.81e-03   44.520 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.321    1.112    -      -           1.80e-03 1.52e-03   56.390 57
CPL   1.888    0.000      12.0    0.0      3.12e-03 0.00e+00   56.560 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   59.472   13.976   73.448
T90    51.712   17.192   68.904
T50    23.120   28.376   51.496
Peak    1.000   17.676   18.676

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   42.3184  +9.7885 0.0232   22.8   -5.4       0.7615     8.2  TRIG_00652643       
------------------------------------------
 
Foreground time interval of the image:
 13.976  70.901 (delta_t =  56.925 [sec])
Background time interval of the image:
-239.000  13.976 (delta_t = 252.976 [sec])

Lightcurves

Notes:

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

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Spectra

Notes:

Time averaged spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   13.976 sec. to   73.448 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72412     ( -0.269205   0.281936 )
Norm@50keV  : 8.44369E-04    ( -0.000151114   0.000147345 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.29 using 59 PHA bins.
# Reduced chi-squared =         0.7945 for     57 degrees of freedom 
# Null hypothesis probability =   8.684328e-01
 
Photon flux (15-150 keV)    in 59.47 sec: 0.113103 ( -0.0175382  0.0175435 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.64103e-07 ( -8.50849e-08  8.73834e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   13.976 sec. to   73.448 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.11179     ( -1.55263   0.84835 )
Epeak [keV] : 62.7503      ( -43.9295 -62.7692 )
Norm@50keV  : 1.87628E-03    ( -0.00115705   0.0124678 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.52 using 59 PHA bins.
# Reduced chi-squared =         0.7951 for     56 degrees of freedom 
# Null hypothesis probability =   8.653585e-01
 
Photon flux (15-150 keV)    in 59.47 sec: 0.110565 ( -0.0182809  0.018218 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.34372e-07 ( -9.74862e-08  1.03628e-07 ) ergs/cm2
 
Band function
Time interval is from   13.976 sec. to   73.448 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.870885   ( 0.853634   0.853634 )
beta        : -2.15348    ( 2.15528   0.640013 )
Epeak [keV] : 53.0490      ( -52.1509 52.5775 )
Norm@50keV   : 2.67880E-03    ( -0.00306438   63.5933 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.20 using 59 PHA bins.
# Reduced chi-squared =         0.8036 for     55 degrees of freedom 
# Null hypothesis probability =   8.511372e-01
 
Photon flux (15-150 keV)    in 59.47 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.39495e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.5343  (-1.92815  2.36709)
R^2/D10^2   : 3.21661E-02  (-0.0160631   0.0309153)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.84 using 59 PHA bins.
# Reduced chi-squared =         0.8918 for     57 degrees of freedom 
# Null hypothesis probability =   7.042051e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.360e-08   1.439e-08
25- 50  1.608e-07   3.467e-08
50-150  1.252e-07   4.600e-08
15-150  3.396e-07   7.999e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 111.833       (-49.2896      -111.454)
Norm        : 0.490238       (-0.0860738     0.122276)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.55 using 59 PHA bins.
# Reduced chi-squared =         0.7816 for     57 degrees of freedom 
# Null hypothesis probability =   8.848698e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.611e-08   1.746e-08
25- 50  1.345e-07   4.383e-08
50-150  2.315e-07   1.476e-07
15-150  4.421e-07   2.125e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.88666        (-3.87294      5.42222)
R1^2/D10^2  : 0.208448        (-0.137394      7.71949)
kT2 [keV]   : 17.9385        (-7.86247      -19.784)
R2^2/D10^2  : 4.63856E-03    (-0.00300801   0.0108108)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.14 using 59 PHA bins.
# Reduced chi-squared =         0.8207 for     55 degrees of freedom 
# Null hypothesis probability =   8.260798e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.330e-08   4.092e-08
25- 50  1.352e-07   7.166e-08
50-150  1.960e-07   1.190e-07
15-150  4.045e-07   2.116e-07

Peak spectrum fit

Power-law model
Time interval is from   17.676 sec. to   18.676 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.32144     ( -0.851974   1.3713 )
Norm@50keV  : 1.80014E-03    ( -0.0018001   0.00122999 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.39 using 59 PHA bins.
# Reduced chi-squared =         0.9893 for     57 degrees of freedom 
# Null hypothesis probability =   4.978250e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.318391 ( -0.13181  0.131892 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.72717e-08 ( -9.24984e-09  1.06314e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   17.676 sec. to   18.676 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.88752     (     )
Epeak [keV] : 12.0369      (   )
Norm@50keV  : 3.12084E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.56 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     56 degrees of freedom 
# Null hypothesis probability =   4.539244e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.317669 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.72293e-08 ( -9.30405e-09  1.04908e-08 ) ergs/cm2
 
Band function
Time interval is from   17.676 sec. to   18.676 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -8.54560   ( 8.5456   8.5456 )
beta        : -2.32147    ( -1.3713   0.852782 )
Epeak [keV] : 23.4045      ( -23.4045 -23.4045 )
Norm@50keV   : 0.244659    ( -0.244659   0.167174 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.39 using 59 PHA bins.
# Reduced chi-squared =          1.025 for     55 degrees of freedom 
# Null hypothesis probability =   4.226345e-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]    : 8.09385  (-5.26385  8.07172)
R^2/D10^2   : 0.317460  (-0.32024   39.9586)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.40 using 59 PHA bins.
# Reduced chi-squared =          1.042 for     57 degrees of freedom 
# Null hypothesis probability =   3.880761e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.680e-09   2.980e-09
25- 50  5.512e-09   3.668e-09
50-150  6.895e-10   6.460e-10
15-150  1.088e-08   7.215e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 42.8220       (-42.8383      -42.8383)
Norm        : 1.96589       (-1.09722     5.78233)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.90 using 59 PHA bins.
# Reduced chi-squared =         0.9982 for     57 degrees of freedom 
# Null hypothesis probability =   4.789467e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.614e-09   2.911e-09
25- 50  6.246e-09   4.077e-09
50-150  5.198e-09   4.461e-09
15-150  1.606e-08   1.082e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.26673        (-2.3767      4.19334)
R1^2/D10^2  : 13.1940        (-12.8358      6176.23)
kT2 [keV]   : 15.0994        (-8.25415      -15.1051)
R2^2/D10^2  : 2.22466E-02    (-0.0221941   0.479254)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.73 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     55 degrees of freedom 
# Null hypothesis probability =   4.470364e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.169e-09   2.862e-09
25- 50  5.039e-09   2.991e-09
50-150  6.601e-09   5.555e-09
15-150  1.681e-08   9.320e-09
Plot creation:
Thu Aug 20 04:23:51 EDT 2015