batgrbproduct Analysis for Trigger=650977

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Aug  2 05:14:43 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger650977/GCN5_download_cron
======================================================================

  Trigger: 00650977      Segment: 000

  BAT Trigger Time: 460161723.584   [s; MET]
      Trigger Stop: 460161723.84   [s; MET]
               UTC: 2015-08-01T22:41:48.648820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 82.9589982137698   Dec: -5.38743125075409  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.7
     Image Trigger?:     NO
     Rate S/N Ratio:     13  [ if not an image trigger ]
     Image S/N Ratio:    7.7

  Flight Position:   [ source = BAT ]
    RA: 82.9589982137698   Dec: -5.38743125075409  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 82.9611236422524   Dec: -5.37445203540923  [deg; J2000]  
        { 05h 31m 50.7s , -05d 22' 28.0" }
         +/- 1.42604283956656 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.439884871595265 [arcmin] (formal 1-sigma fit error)
    SNR: 18.3201485560979
 
  Angular difference between Flight and Ground position is 0.789035 arcmin
 
  Partial Coding Fraction: 0.625    [ including projection effects ]

  Duration
     T90: 426.115999937057 +/- 30.2632755209732
        Measured from: -17.9719998836517
                   to: 408.144000053406     [s; relative to TRIGTIME]
     T50: 361.219999969006 +/- 6.6891867884209
        Measured from: 6.19600009918213
                   to: 367.416000068188     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 9.32400000095367     
                   to: 10.3240000009537     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -30.1599999666214     
                   to: 433.944000005722     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.806577   1.909110   1.260018   0.269281
           0.120257   0.123075   0.105091   0.088158 [error]
 Peak      0.093422   0.109874   0.072123   0.012215
           0.008300   0.008931   0.007570   0.005542 [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 5.82e-07 8.72e-07 9.77e-07 2.07e-06 3.05e-06 4.50e-06   erg/cm2
              Error 6.79e-08 6.22e-08 1.08e-07 4.81e-07 2.47e-07 5.75e-07   erg/cm2
Peak flux Power-law 1.03e+00 8.57e-01 4.86e-01 4.08e-01 2.55e+00 2.78e+00   ph/cm2/s
              Error 1.39e-01 7.63e-02 6.27e-02 1.02e-01 2.28e-01 2.46e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.82e-07 8.72e-07 9.76e-07 2.05e-06 3.05e-06 4.48e-06   erg/cm2
              Error 6.92e-08 6.44e-08 8.10e-08 6.30e-07 2.43e-07 7.86e-07   erg/cm2
Peak flux Cutoff-PL 9.68e-01 9.07e-01 4.95e-01 2.23e-01 2.51e+00 2.59e+00   ph/cm2/s
              Error 1.59e-01 1.00e-01 6.83e-02 1.80e-01 2.34e-01 2.99e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   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    1.836    0.138    -      -           7.16e-04 5.70e-05   50.660 57
CPL   1.834    0.536    9998.7    0.0      7.17e-04 0.00e+00   50.670 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.819    0.155    -      -           1.84e-02 1.83e-03   63.320 57
CPL   1.331    0.650      61.9  -22.3      3.41e-02 3.40e-02   61.490 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: 399.424000 sec.
T50 in the 50-300 keV band: 362.880000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  464.104  -30.160  433.944
T90   426.116  -17.972  408.144
T50   361.220    6.196  367.416
Peak    1.000    9.324   10.324

Image

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

 
Foreground time interval of the image:
-30.160   8.917 (delta_t =  39.077 [sec])
Background time interval of the image:
-239.584 -30.160 (delta_t = 209.424 [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  -30.160 sec. to  433.944 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.83576     ( -0.135797   0.139229 )
Norm@50keV  : 7.15705E-04    ( -5.73898e-05   5.65694e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.66 using 59 PHA bins.
# Reduced chi-squared =         0.8888 for     57 degrees of freedom 
# Null hypothesis probability =   7.102078e-01
 
Photon flux (15-150 keV)    in 464.1 sec: 0.100023 ( -0.00729823  0.00731649 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.05485e-06 ( -2.45807e-07  2.47967e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -30.160 sec. to  433.944 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.83441     ( -0.397684   0.673871 )
Epeak [keV] : 9998.72      (   )
Norm@50keV  : 7.16570E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.67 using 59 PHA bins.
# Reduced chi-squared =         0.9047 for     56 degrees of freedom 
# Null hypothesis probability =   6.763357e-01
 
Photon flux (15-150 keV)    in 464.1 sec: 0.100074 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.05315e-06 ( -2.40436e-07  2.45657e-07 ) ergs/cm2
 
Band function
Time interval is from  -30.160 sec. to  433.944 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.49065   ( 1.50542   1.50542 )
beta        : -1.83530    ( -0.139352   0.135703 )
Epeak [keV] : 20.9417      ( -18.0921 -18.0921 )
Norm@50keV   : 1.56018E-03    ( -0.00071198   0.103373 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.66 using 59 PHA bins.
# Reduced chi-squared =         0.9212 for     55 degrees of freedom 
# Null hypothesis probability =   6.408666e-01
 
Photon flux (15-150 keV)    in 464.1 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]    : 12.0245  (  )
R^2/D10^2   : 2.26149E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         114.26 using 59 PHA bins.
# Reduced chi-squared =         2.0046 for     57 degrees of freedom 
# Null hypothesis probability =   1.038995e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.210e-07   4.379e-08
25- 50  1.013e-06   8.655e-08
50-150  8.817e-07   1.564e-07
15-150  2.215e-06   1.947e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.6789       (-22.2962      44.8879)
Norm        : 0.435681       (-0.0479062     0.0481581)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.06 using 59 PHA bins.
# Reduced chi-squared =         0.9660 for     57 degrees of freedom 
# Null hypothesis probability =   5.482031e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.285e-07   6.098e-08
25- 50  9.133e-07   7.356e-08
50-150  1.477e-06   4.817e-07
15-150  2.919e-06   5.374e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.48659        (-1.21471      1.41266)
R1^2/D10^2  : 0.310295        (-0.178712      0.571999)
kT2 [keV]   : 22.0158        (-4.2162      7.33763)
R2^2/D10^2  : 1.93534E-03    (-0.0012634   0.0015451)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.73 using 59 PHA bins.
# Reduced chi-squared =         0.9950 for     55 degrees of freedom 
# Null hypothesis probability =   4.850290e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.812e-07   1.824e-07
25- 50  8.345e-07   1.655e-07
50-150  1.569e-06   5.119e-07
15-150  2.984e-06   7.495e-07

Peak spectrum fit

Power-law model
Time interval is from    9.324 sec. to   10.324 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.81899     ( -0.15236   0.157246 )
Norm@50keV  : 1.83636E-02    ( -0.00184064   0.00181397 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.32 using 59 PHA bins.
# Reduced chi-squared =          1.111 for     57 degrees of freedom 
# Null hypothesis probability =   2.632508e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.54934 ( -0.227817  0.22797 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.68957e-07 ( -1.70474e-08  1.72151e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    9.324 sec. to   10.324 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33141     ( -0.726521   0.573635 )
Epeak [keV] : 61.8878      ( -17.2122 -61.8891 )
Norm@50keV  : 3.40858E-02    ( -0.0165983   0.0513369 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.49 using 59 PHA bins.
# Reduced chi-squared =          1.098 for     56 degrees of freedom 
# Null hypothesis probability =   2.859765e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.50719 ( -0.23493  0.23398 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.62384e-07 ( -1.915e-08  1.9183e-08 ) ergs/cm2
 
Band function
Time interval is from    9.324 sec. to   10.324 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.04600   ( 1.0426   1.0426 )
beta        : -2.18976    ( 2.18688   0.436946 )
Epeak [keV] : 50.7100      ( -50.3275 -50.3275 )
Norm@50keV   : 5.13288E-02    ( -0.052414   1589.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.82 using 59 PHA bins.
# Reduced chi-squared =          1.106 for     55 degrees of freedom 
# Null hypothesis probability =   2.745309e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.62584e-07 ( -1.62577e-07  -1.8383e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.3957  (-1.14735  1.29892)
R^2/D10^2   : 0.745288  (-0.249022   0.366174)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          86.54 using 59 PHA bins.
# Reduced chi-squared =          1.518 for     57 degrees of freedom 
# Null hypothesis probability =   7.032162e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.035e-08   3.705e-09
25- 50  6.016e-08   6.625e-09
50-150  4.531e-08   9.415e-09
15-150  1.258e-07   1.370e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 96.0285       (-25.671      43.7881)
Norm        : 11.4170       (-1.38278     1.62775)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.45 using 59 PHA bins.
# Reduced chi-squared =          1.078 for     57 degrees of freedom 
# Null hypothesis probability =   3.197774e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.983e-08   3.840e-09
25- 50  5.116e-08   4.980e-09
50-150  8.099e-08   3.006e-08
15-150  1.620e-07   3.415e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.60147        (-2.30106      2.58269)
R1^2/D10^2  : 3.80853        (-2.36567      13.0491)
kT2 [keV]   : 21.7653        (-6.90568      26.1147)
R2^2/D10^2  : 4.62273E-02    (-0.0409248   0.170271)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.18 using 59 PHA bins.
# Reduced chi-squared =          1.149 for     55 degrees of freedom 
# Null hypothesis probability =   2.099054e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.906e-08   1.303e-08
25- 50  5.186e-08   1.786e-08
50-150  7.978e-08   4.095e-08
15-150  1.607e-07   6.252e-08
Plot creation:
Sun Aug  2 15:47:31 EDT 2015