batgrbproduct Analysis for Trigger=630876

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Feb 13 04:31:29 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger630876/GCN5_download_cron
======================================================================

  Trigger: 00630876      Segment: 000

  BAT Trigger Time: 445431452.224   [s; MET]
      Trigger Stop: 445431452.736   [s; MET]
               UTC: 2015-02-12T10:57:19.047700    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 285.521339180983   Dec: 47.407424552007  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.9
     Image Trigger?:     NO
     Rate S/N Ratio:     18.5472369909914  [ if not an image trigger ]
     Image S/N Ratio:    7.9

  Flight Position:   [ source = BAT ]
    RA: 285.521339180983   Dec: 47.407424552007  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 285.490552502772   Dec: 47.384391076634  [deg; J2000]  
        { 19h 01m 57.7s , +47d 23' 03.8" }
         +/- 1.11290779829678 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.496399011282676 [arcmin] (formal 1-sigma fit error)
    SNR: 26.1064677415542
 
  Angular difference between Flight and Ground position is 1.863734 arcmin
 
  Partial Coding Fraction: 0.7109375    [ including projection effects ]

  Duration
     T90: 14.5120000243187 +/- 3.20519580051343
        Measured from: 0.248000144958496
                   to: 14.7600001692772     [s; relative to TRIGTIME]
     T50: 5.15200006961823 +/- 0.780235838101835
        Measured from: 1.62400013208389
                   to: 6.77600020170212     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.828000009059906     
                   to: 1.82800000905991     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.296000003814697     
                   to: 18.9360000491142     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.370215   0.552267   0.424069   0.088964
           0.026713   0.028409   0.025329   0.021564 [error]
 Peak      0.046823   0.102184   0.073344   0.015549
           0.006580   0.007581   0.006914   0.005503 [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 1.21e-07 2.21e-07 3.12e-07 9.22e-07 8.92e-07 1.57e-06   erg/cm2
              Error 1.24e-08 1.37e-08 2.49e-08 1.59e-07 5.97e-08 1.78e-07   erg/cm2
Peak flux Power-law 5.24e-01 6.09e-01 5.09e-01 7.17e-01 1.90e+00 2.36e+00   ph/cm2/s
              Error 8.55e-02 6.12e-02 5.53e-02 1.62e-01 1.73e-01 2.27e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.16e-07 2.27e-07 3.16e-07 6.37e-07 8.75e-07 1.30e-06   erg/cm2
              Error 1.45e-08 1.63e-08 2.65e-08 -------- 6.65e-08 3.27e-07   erg/cm2
Peak flux Cutoff-PL 5.06e-01 6.22e-01 5.19e-01 5.56e-01 1.89e+00 2.20e+00   ph/cm2/s
              Error 9.59e-02 5.44e-02 6.29e-02 2.62e-01 1.77e-01 3.45e-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    1.505    0.106    -      -           4.89e-03 2.96e-04   48.430 57
CPL   1.268    0.362     154.7  -42.3      6.44e-03 3.18e-03   47.420 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.259    0.154    -      -           1.60e-02 1.45e-03   62.720 57
CPL   1.054    0.471     235.5    0.0      2.03e-02 1.40e-02   62.380 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: 12.608000 sec.
T50 in the 50-300 keV band: 4.352000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   19.232   -0.296   18.936
T90    14.512    0.248   14.760
T50     5.152    1.624    6.776
Peak    1.000    0.828    1.828

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  285.4906 +47.3844 0.0074   20.5  -94.3       1.4490    26.1  TRIG_00630876       
------------------------------------------
 
Foreground time interval of the image:
 -0.296  18.936 (delta_t =  19.232 [sec])
Background time interval of the image:
-239.224 -51.614 (delta_t = 187.610 [sec])
-50.224  -0.296 (delta_t =  49.928 [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   -0.296 sec. to   18.936 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50526     ( -0.10599   0.106766 )
Norm@50keV  : 4.89350E-03    ( -0.000296842   0.000295748 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.43 using 59 PHA bins.
# Reduced chi-squared =         0.8497 for     57 degrees of freedom 
# Null hypothesis probability =   7.833324e-01
 
Photon flux (15-150 keV)    in 19.23 sec: 0.611768 ( -0.036762  0.0368045 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.91932e-07 ( -5.94951e-08  5.98957e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.296 sec. to   18.936 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26829     ( -0.433913   0.289924 )
Epeak [keV] : 154.660      ( -70.1571 -154.664 )
Norm@50keV  : 6.44236E-03    ( -0.00229009   0.00407366 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.42 using 59 PHA bins.
# Reduced chi-squared =         0.8467 for     56 degrees of freedom 
# Null hypothesis probability =   7.860178e-01
 
Photon flux (15-150 keV)    in 19.23 sec: 0.604299 ( -0.038795  0.038763 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.75025e-07 ( -6.65858e-08  6.64454e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.296 sec. to   18.936 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.636277   ( 0.774649   5.76571 )
beta        : -1.58951    ( 1.58631   0.158484 )
Epeak [keV] : 52.4395      ( -52.6535 604.114 )
Norm@50keV   : 1.74318E-02    ( -0.0179615   404465 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.12 using 59 PHA bins.
# Reduced chi-squared =         0.8566 for     55 degrees of freedom 
# Null hypothesis probability =   7.662784e-01
 
Photon flux (15-150 keV)    in 19.23 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]    : 15.0276  (-1.17636  1.28884)
R^2/D10^2   : 6.76147E-02  (-0.0168938   0.0224058)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         113.16 using 59 PHA bins.
# Reduced chi-squared =         1.9852 for     57 degrees of freedom 
# Null hypothesis probability =   1.393328e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.146e-08   7.557e-09
25- 50  2.446e-07   1.856e-08
50-150  3.763e-07   4.519e-08
15-150  6.823e-07   5.250e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 2.49282       (-0.146445     0.146445)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.14 using 59 PHA bins.
# Reduced chi-squared =         0.8446 for     57 degrees of freedom 
# Null hypothesis probability =   7.919955e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.196e-07   8.173e-09
25- 50  2.301e-07   2.125e-08
50-150  5.047e-07   1.007e-07
15-150  8.545e-07   1.257e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.72567        (-1.18181      1.35659)
R1^2/D10^2  : 0.709150        (-0.323504      0.70052)
kT2 [keV]   : 25.4860        (-4.01447      6.47469)
R2^2/D10^2  : 8.65304E-03    (-0.00474431   0.00443349)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.48 using 59 PHA bins.
# Reduced chi-squared =         0.8451 for     55 degrees of freedom 
# Null hypothesis probability =   7.864283e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.135e-07   2.663e-08
25- 50  2.266e-07   4.189e-08
50-150  5.284e-07   1.619e-07
15-150  8.684e-07   1.806e-07

Peak spectrum fit

Power-law model
Time interval is from    0.828 sec. to    1.828 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25946     ( -0.154218   0.153378 )
Norm@50keV  : 1.60405E-02    ( -0.00145108   0.00144815 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.72 using 59 PHA bins.
# Reduced chi-squared =          1.100 for     57 degrees of freedom 
# Null hypothesis probability =   2.806193e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.90012 ( -0.173223  0.173343 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.60136e-07 ( -1.63445e-08  1.64721e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.828 sec. to    1.828 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.05447     ( -0.656378   0.285614 )
Epeak [keV] : 235.506      ( -235.587 -235.587 )
Norm@50keV  : 2.03438E-02    ( -0.0055762   0.0223341 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.38 using 59 PHA bins.
# Reduced chi-squared =          1.114 for     56 degrees of freedom 
# Null hypothesis probability =   2.599673e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.88680 ( -0.17754  0.17729 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.57776e-07 ( -1.8121e-08  1.7814e-08 ) ergs/cm2
 
Band function
Time interval is from    0.828 sec. to    1.828 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.29518   ( -0.450262   -0.450262 )
beta        : -1.42787    ( 1.4136   0.223576 )
Epeak [keV] : 40.3972      ( -14.7516 127.461 )
Norm@50keV   : 0.773233    ( -0.89716   154.825 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.90 using 59 PHA bins.
# Reduced chi-squared =          1.089 for     55 degrees of freedom 
# Null hypothesis probability =   3.023663e-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]    : 16.6454  (-1.95407  2.29488)
R^2/D10^2   : 0.158497  (-0.055832   0.0831949)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          88.50 using 59 PHA bins.
# Reduced chi-squared =          1.553 for     57 degrees of freedom 
# Null hypothesis probability =   4.738510e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.994e-09   1.648e-09
25- 50  3.912e-08   5.045e-09
50-150  7.685e-08   1.358e-08
15-150  1.250e-07   1.540e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 7.79617       (-0.709617     0.709593)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.51 using 59 PHA bins.
# Reduced chi-squared =          1.255 for     57 degrees of freedom 
# Null hypothesis probability =   9.348694e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.941e-08   7.209e-09
25- 50  3.734e-08   1.465e-08
50-150  8.189e-08   3.757e-08
15-150  1.386e-07   6.606e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.17992        (-2.29496      2.87503)
R1^2/D10^2  : 0.802893        (-0.41407      1.00218)
kT2 [keV]   : 40.7314        (-15.7777      -42.2084)
R2^2/D10^2  : 6.59224E-03    (-0.00516372   0.0121317)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.94 using 59 PHA bins.
# Reduced chi-squared =          1.090 for     55 degrees of freedom 
# Null hypothesis probability =   3.011265e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.470e-08   4.948e-09
25- 50  3.871e-08   1.218e-08
50-150  1.051e-07   5.023e-08
15-150  1.586e-07   7.121e-08
Plot creation:
Fri Feb 13 04:35:25 EST 2015