batgrbproduct Analysis for Trigger=556870

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed May 29 11:10:57 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger556870/GCN5_download_cron
======================================================================

  Trigger: 00556870      Segment: 000

  BAT Trigger Time: 391452094.528   [s; MET]
      Trigger Stop: 391452095.04   [s; MET]
               UTC: 2013-05-28T16:41:23.919600    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 138.910917852021   Dec: 87.2757530719287  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.71
     Image Trigger?:     NO
     Rate S/N Ratio:     20.8326666559997  [ if not an image trigger ]
     Image S/N Ratio:    9.71

  Flight Position:   [ source = BAT ]
    RA: 138.910917852021   Dec: 87.2757530719287  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 139.404792911949   Dec: 87.3004295631328  [deg; J2000]  
        { 09h 17m 37.2s , +87d 18' 01.5" }
         +/- 0.642374679724852 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.176270236983183 [arcmin] (formal 1-sigma fit error)
    SNR: 57.2408876357184
 
  Angular difference between Flight and Ground position is 2.039067 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 59.3999999761581 +/- 3.5477232088438
        Measured from: 1.72800010442734
                   to: 61.1280000805855     [s; relative to TRIGTIME]
     T50: 40.3719999790192 +/- 0.767885409983051
        Measured from: 7.34000009298325
                   to: 47.7120000720024     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 6.05599999427795     
                   to: 7.05599999427795     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.120000004768372     
                   to: 79.3360000252724     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.656877   3.385198   2.322493   0.474820
           0.055420   0.058327   0.051164   0.042682 [error]
 Peak      0.053464   0.127815   0.155940   0.047600
           0.006603   0.008046   0.008143   0.005958 [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 8.44e-07 1.40e-06 1.77e-06 4.44e-06 5.25e-06 8.46e-06   erg/cm2
              Error 4.00e-08 3.76e-08 5.50e-08 3.16e-07 1.31e-07 3.46e-07   erg/cm2
Peak flux Power-law 5.74e-01 8.51e-01 9.43e-01 1.97e+00 2.97e+00 4.34e+00   ph/cm2/s
              Error 7.51e-02 6.82e-02 6.16e-02 2.78e-01 1.87e-01 3.11e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.92e-07 1.42e-06 1.80e-06 3.08e-06 5.14e-06 7.10e-06   erg/cm2
              Error 5.21e-08 4.09e-08 5.97e-08 7.57e-07 1.52e-07 7.74e-07   erg/cm2
Peak flux Cutoff-PL 4.93e-01 8.70e-01 1.01e+00 1.21e+00 2.91e+00 3.58e+00   ph/cm2/s
              Error 9.61e-02 7.42e-02 8.15e-02 4.81e-01 1.92e-01 5.11e-01   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.666    0.047    -      -           7.14e-03 1.71e-04   48.600 57
CPL   1.394    0.191     118.3   79.7      9.58e-03 1.94e-03   42.310 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.852    0.106    -      -           2.58e-02 1.64e-03   66.190 57
CPL   0.316    0.464     187.4  274.4      4.39e-02 2.04e-02   61.740 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: 52.864000 sec.
T50 in the 50-300 keV band: 23.872000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   79.216    0.120   79.336
T90    59.400    1.728   61.128
T50    40.372    7.340   47.712
Peak    1.000    6.056    7.056

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  139.4048 +87.3004 0.0034   18.3   -9.4       2.5774    57.2  TRIG_00556870       
------------------------------------------
 
Foreground time interval of the image:
  0.120   8.173 (delta_t =   8.053 [sec])
Background time interval of the image:
-60.528   0.120 (delta_t =  60.648 [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    0.120 sec. to   79.336 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.66610     ( -0.0468788   0.0469912 )
Norm@50keV  : 7.14264E-03    ( -0.000171257   0.000171191 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.60 using 59 PHA bins.
# Reduced chi-squared =         0.8526 for     57 degrees of freedom 
# Null hypothesis probability =   7.781697e-01
 
Photon flux (15-150 keV)    in 79.22 sec: 0.937663 ( -0.025168  0.0252644 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.25434e-06 ( -1.30909e-07  1.311e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.120 sec. to   79.336 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39374     ( -0.195014   0.186953 )
Epeak [keV] : 118.339      ( -28.3879 131.041 )
Norm@50keV  : 9.57572E-03    ( -0.00170342   0.00217721 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.31 using 59 PHA bins.
# Reduced chi-squared =         0.7556 for     56 degrees of freedom 
# Null hypothesis probability =   9.118593e-01
 
Photon flux (15-150 keV)    in 79.22 sec: 0.915860 ( -0.028747  0.028906 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.14317e-06 ( -1.52055e-07  1.51611e-07 ) ergs/cm2
 
Band function
Time interval is from    0.120 sec. to   79.336 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.39372   ( -0.162533   0.134067 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 118.316      ( -18.2151 130.885 )
Norm@50keV   : 9.57441E-03    ( -0.00170285   0.00217815 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.31 using 59 PHA bins.
# Reduced chi-squared =         0.7693 for     55 degrees of freedom 
# Null hypothesis probability =   8.948294e-01
 
Photon flux (15-150 keV)    in 79.22 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]    : 15.0926  (  )
R^2/D10^2   : 9.47746E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         383.75 using 59 PHA bins.
# Reduced chi-squared =         6.7325 for     57 degrees of freedom 
# Null hypothesis probability =   5.764322e-50
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.577e-07   1.881e-08
25- 50  1.429e-06   4.397e-08
50-150  2.222e-06   1.014e-07
15-150  4.009e-06   1.109e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 160.629       (      )
Norm        : 3.78941       (-0.115145     0.12468)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.39 using 59 PHA bins.
# Reduced chi-squared =         0.7612 for     57 degrees of freedom 
# Null hypothesis probability =   9.081973e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.607e-07   3.664e-08
25- 50  1.425e-06   7.764e-08
50-150  2.895e-06   6.274e-07
15-150  5.081e-06   7.062e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.00954        (-0.628496      0.666539)
R1^2/D10^2  : 0.980636        (-0.267069      0.402316)
kT2 [keV]   : 25.0537        (-1.99951      2.50864)
R2^2/D10^2  : 1.21485E-02    (-0.00367078   0.00458742)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.01 using 59 PHA bins.
# Reduced chi-squared =         0.8366 for     55 degrees of freedom 
# Null hypothesis probability =   8.006619e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.189e-07   6.044e-08
25- 50  1.438e-06   7.011e-08
50-150  2.910e-06   1.775e-07
15-150  5.068e-06   2.495e-07

Peak spectrum fit

Power-law model
Time interval is from    6.056 sec. to    7.056 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.851968     ( -0.10746   0.105456 )
Norm@50keV  : 2.58334E-02    ( -0.00163821   0.00163238 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.19 using 59 PHA bins.
# Reduced chi-squared =          1.161 for     57 degrees of freedom 
# Null hypothesis probability =   1.893310e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.96539 ( -0.18667  0.186825 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.95489e-07 ( -1.98598e-08  1.99193e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    6.056 sec. to    7.056 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.316204     ( -0.48972   0.437572 )
Epeak [keV] : 187.405      ( -61.7481 486.954 )
Norm@50keV  : 4.38907E-02    ( -0.015127   0.025762 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.74 using 59 PHA bins.
# Reduced chi-squared =          1.102 for     56 degrees of freedom 
# Null hypothesis probability =   2.785432e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.91433 ( -0.19168  0.19145 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.90116e-07 ( -2.0921e-08  2.0787e-08 ) ergs/cm2
 
Band function
Time interval is from    6.056 sec. to    7.056 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.809271   ( 0.809253   0.809253 )
beta        : -0.851969    ( -0.105455   0.107462 )
Epeak [keV] : 16.6040      (   )
Norm@50keV   : 3.67422E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.19 using 59 PHA bins.
# Reduced chi-squared =          1.204 for     55 degrees of freedom 
# Null hypothesis probability =   1.434386e-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]    : 24.2817  (-1.96259  2.2266)
R^2/D10^2   : 8.26193E-02  (-0.0192329   0.0241914)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          85.33 using 59 PHA bins.
# Reduced chi-squared =          1.497 for     57 degrees of freedom 
# Null hypothesis probability =   8.918365e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.592e-09   1.029e-09
25- 50  4.801e-08   4.620e-09
50-150  2.107e-07   1.890e-08
15-150  2.673e-07   1.915e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 11.4879       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         176.38 using 59 PHA bins.
# Reduced chi-squared =         3.0944 for     57 degrees of freedom 
# Null hypothesis probability =   3.971699e-14
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.861e-08   2.335e-09
25- 50  5.503e-08   5.555e-09
50-150  1.207e-07   3.853e-08
15-150  2.043e-07   3.860e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.78947        (-3.31558      4.79369)
R1^2/D10^2  : 0.723448        (-0.464718      2.45531)
kT2 [keV]   : 33.2014        (-5.92406      17.4652)
R2^2/D10^2  : 2.81449E-02    (-0.0208359   0.0260016)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.26 using 59 PHA bins.
# Reduced chi-squared =          1.132 for     55 degrees of freedom 
# Null hypothesis probability =   2.336004e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.529e-08   6.511e-09
25- 50  5.120e-08   1.687e-08
50-150  2.248e-07   7.746e-08
15-150  2.913e-07   8.615e-08
Plot creation:
Wed May 29 11:23:40 EDT 2013