batgrbproduct Analysis for Trigger=623158

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jan  2 15:52:59 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger623158/batgroup_hand_proc
======================================================================

  Trigger: 00623158      Segment: 000

  BAT Trigger Time: 441786546.692   [s; MET]
      Trigger Stop: 441786546.756   [s; MET]
               UTC: 2015-01-01T06:28:53.699400    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 312.631006525829   Dec: 36.727689408524  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.46
     Image Trigger?:     NO
     Rate S/N Ratio:     19.4422220952236  [ if not an image trigger ]
     Image S/N Ratio:    7.46

  Flight Position:   [ source = BAT ]
    RA: 312.631006525829   Dec: 36.727689408524  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 312.598527825013   Dec: 36.6688263563512  [deg; J2000]  
        { 20h 50m 23.6s , +36d 40' 07.8" }
         +/- 2.4795073189542 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.57888992092569 [arcmin] (formal 1-sigma fit error)
    SNR: 8.31264521014016
 
  Angular difference between Flight and Ground position is 3.861970 arcmin
 
  Partial Coding Fraction: 0.9140625    [ including projection effects ]

  Duration
     T90: 0.059999942779541 +/- 0.0144221847352656
        Measured from: 0.00400012731552124
                   to: 0.0640000700950623     [s; relative to TRIGTIME]
     T50: 0.031999945640564 +/- 0.0200000405311584
        Measured from: 0.020000159740448
                   to: 0.052000105381012     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.46399998664856     
                   to: 0.53600001335144     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.0680000185966492     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.008859   0.015623   0.013816   0.001131
           0.002283   0.002669   0.002776   0.002059 [error]
 Peak     -0.001793   0.024743   0.012229   0.009154
           0.006914   0.007027   0.006066   0.005422 [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 2.32e-09 4.93e-09 8.23e-09 3.13e-08 2.27e-08 4.68e-08   erg/cm2
              Error 7.62e-10 1.08e-09 2.05e-09 1.57e-08 5.24e-09 1.74e-08   erg/cm2
Peak flux Power-law 5.96e-02 9.15e-02 1.05e-01 2.32e-01 3.25e-01 4.89e-01   ph/cm2/s
              Error 6.47e-02 5.70e-02 4.58e-02 2.94e-01 1.49e-01 2.53e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.76e-09 5.70e-09 9.81e-09 8.49e-09 2.24e-08 2.58e-08   erg/cm2
              Error 9.23e-10 1.42e-09 2.77e-09 1.59e-08 5.41e-09 1.52e-08   erg/cm2
Peak flux Cutoff-PL 4.98e-02 1.04e-01 1.16e-01 7.07e-02 3.15e-01 3.35e-01   ph/cm2/s
              Error 6.33e-02 1.12e-01 7.32e-02 -------- 2.35e-01 3.11e-01   ph/cm2/s
 
Fluence        Band 1.83e-09 5.54e-09 9.68e-09 1.08e-08 2.29e-08 2.81e-08   erg/cm2
              Error 1.34e-09 -------- -------- -------- -------- --------   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    1.260    0.309    -      -           3.34e-02 6.98e-03   51.050 57
CPL  -0.131    1.703      84.7  416.9      1.52e-01 6.21e-01   48.120 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.797    0.871    -      -           2.83e-03 2.07e-03   68.340 57
CPL   3.791    0.000     238.2   66.5      1.85e-14 -3.37e+03   68.000 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    0.068    0.000    0.068
T90     0.060    0.004    0.064
T50     0.032    0.020    0.052
Peak    1.000   -0.464    0.536

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  312.5985    36.6688   0.0231    13.9419  -104.5558         0.0428160      8.313 TRIG_00623158                 
 
Foreground time interval of the image:
  0.000   0.068 (delta_t =   0.068 [sec])
Background time interval of the image:
-126.591   0.000 (delta_t = 126.591 [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    0.000 sec. to    0.068 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25966     ( -0.304507   0.312973 )
Norm@50keV  : 3.33772E-02    ( -0.00698725   0.00696971 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.05 using 59 PHA bins.
# Reduced chi-squared =         0.8957 for     57 degrees of freedom 
# Null hypothesis probability =   6.965444e-01
 
Photon flux (15-150 keV)    in 0.068 sec: 3.95391 ( -0.827017  0.827504 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.26571e-08 ( -5.21976e-09  5.26215e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.068 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.131044     ( -2.0251   1.38077 )
Epeak [keV] : 84.6676      ( -24.2727 809.47 )
Norm@50keV  : 0.152089    ( -0.152091   1.08994 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.12 using 59 PHA bins.
# Reduced chi-squared =         0.8593 for     56 degrees of freedom 
# Null hypothesis probability =   7.638749e-01
 
Photon flux (15-150 keV)    in 0.068 sec: 3.92600 ( -0.83391  0.83193 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.23976e-08 ( -5.39111e-09  5.42375e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.068 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.131097   ( -1.06705   4.3814 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 84.6515      ( -21.5046 193.724 )
Norm@50keV   : 0.152120    ( -0.15212   1.08661 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.12 using 59 PHA bins.
# Reduced chi-squared =         0.8749 for     55 degrees of freedom 
# Null hypothesis probability =   7.327502e-01
 
Photon flux (15-150 keV)    in 0.068 sec: 3.96292 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.28602e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 18.2288  (-3.56522  4.52064)
R^2/D10^2   : 0.276437  (-0.146635   0.28714)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.42 using 59 PHA bins.
# Reduced chi-squared =         0.8671 for     57 degrees of freedom 
# Null hypothesis probability =   7.519077e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.245e-09   4.864e-10
25- 50  5.814e-09   2.061e-09
50-150  1.407e-08   5.221e-09
15-150  2.113e-08   6.552e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 16.1190       (-3.41196     3.40844)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.53 using 59 PHA bins.
# Reduced chi-squared =         0.9216 for     57 degrees of freedom 
# Null hypothesis probability =   6.431967e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.745e-09   1.639e-09
25- 50  5.281e-09   3.079e-09
50-150  1.158e-08   6.790e-09
15-150  1.961e-08   1.160e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.48379        (-3.47775      -3.47775)
R1^2/D10^2  : 29.5912        (-29.7491      1.18242e+07)
kT2 [keV]   : 19.8890        (-4.38091      -19.8871)
R2^2/D10^2  : 0.196055    (-0.196127   0.146862)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.74 using 59 PHA bins.
# Reduced chi-squared =         0.8679 for     55 degrees of freedom 
# Null hypothesis probability =   7.457916e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.918e-09   8.320e-10
25- 50  5.271e-09   2.544e-09
50-150  1.482e-08   9.058e-09
15-150  2.201e-08   1.190e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.464 sec. to    0.536 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.797022     ( -1.01693   0.724131 )
Norm@50keV  : 2.82860E-03    ( -0.00282863   0.0013118 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.34 using 59 PHA bins.
# Reduced chi-squared =          1.199 for     57 degrees of freedom 
# Null hypothesis probability =   1.443979e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.325136 ( -0.147278  0.151605 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.30958e-08 ( -1.45961e-08  1.48498e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.464 sec. to    0.536 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.79137     (     )
Epeak [keV] : 238.208      ( -238.208 -105.28 )
Norm@50keV  : 1.84796E-14    ( 6737.89   -1.84796e-14 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.00 using 59 PHA bins.
# Reduced chi-squared =          1.214 for     56 degrees of freedom 
# Null hypothesis probability =   1.306236e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.315068 ( -0.315068  0.155739 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.01632e-08 ( -3.01632e-08  1.72733e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.464 sec. to    0.536 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.93764   ( -4.93764   -4.93764 )
beta        : -1.83361    ( 1.83361   1.55636 )
Epeak [keV] : 51.8422      ( -51.8422 23.1694 )
Norm@50keV   : 3.47739    ( -1.40699   647050 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.56 using 59 PHA bins.
# Reduced chi-squared =          1.210 for     55 degrees of freedom 
# Null hypothesis probability =   1.365157e-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]    : 19.2102  (-7.48823  34.2819)
R^2/D10^2   : 1.89327E-02  (-0.0189232   0.080059)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.38 using 59 PHA bins.
# Reduced chi-squared =          1.200 for     57 degrees of freedom 
# Null hypothesis probability =   1.437158e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.368e-09   9.115e-10
25- 50  6.630e-09   4.173e-09
50-150  1.802e-08   1.280e-08
15-150  2.602e-08   1.761e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-121.142      -199.363)
Norm        : 1.34518       (-0.636807     0.636807)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.02 using 59 PHA bins.
# Reduced chi-squared =          1.246 for     57 degrees of freedom 
# Null hypothesis probability =   1.003144e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.350e-09   2.235e-09
25- 50  6.443e-09   4.204e-09
50-150  1.413e-08   9.345e-09
15-150  2.393e-08   1.545e-08
Double BB
R1^2/D10^2  : 4.89327E-02        (      )
kT2 [keV]   : 199.363        (-199.363      -199.363)
R2^2/D10^2  : 6.45278E-05    (-6.45903e-05   0.0537483)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.38 using 59 PHA bins.
#Fit statistic : Chi-Squared =          66.66 using 59 PHA bins.
#Fit statistic : Chi-Squared =          66.64 using 59 PHA bins.
# Reduced chi-squared =          1.243 for     55 degrees of freedom 
# Reduced chi-squared =          1.212 for     55 degrees of freedom 
# Reduced chi-squared =          1.212 for     55 degrees of freedom 
# Null hypothesis probability =   1.061296e-01
# Null hypothesis probability =   1.348233e-01
# Null hypothesis probability =   1.350574e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00
Plot creation:
Fri Jan  2 16:02:00 EST 2015