batgrbproduct Analysis for Trigger=553977

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Apr 20 18:56:17 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger553977/GCN5_download_cron
======================================================================

  Trigger: 00553977      Segment: 000

  BAT Trigger Time: 388135720   [s; MET]
      Trigger Stop: 388135784   [s; MET]
               UTC: 2013-04-20T07:28:29.538420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 196.099811619603   Dec: 59.4236969469464  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.77
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    12.77

  Flight Position:   [ source = BAT ]
    RA: 196.099811619603   Dec: 59.4236969469464  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 196.120153062262   Dec: 59.4220828110946  [deg; J2000]  
        { 13h 04m 28.8s , +59d 25' 19.5" }
         +/- 0.618331522279855 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.187343589833511 [arcmin] (formal 1-sigma fit error)
    SNR: 60.446831521145
 
  Angular difference between Flight and Ground position is 0.628367 arcmin
 
  Partial Coding Fraction: 0.8671875    [ including projection effects ]

  Duration
     T90: 121.12399995327 +/- 11.7367307263019
        Measured from: 37.3280001282692
                   to: 158.452000081539     [s; relative to TRIGTIME]
     T50: 27.0319999456406 +/- 2.07638632578738
        Measured from: 99.4360001087189
                   to: 126.468000054359     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 110.667999982834     
                   to: 111.667999982834     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -14.9879999756813     
                   to: 188.128000020981     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     5.354855   5.805814   2.557744   0.381191
           0.089882   0.092675   0.079992   0.068840 [error]
 Peak      0.124165   0.165979   0.092327   0.012802
           0.008028   0.008646   0.006986   0.005313 [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 1.97e-06 2.39e-06 2.11e-06 3.19e-06 7.58e-06 9.66e-06   erg/cm2
              Error 9.03e-08 6.30e-08 8.39e-08 2.72e-07 1.98e-07 3.40e-07   erg/cm2
Peak flux Power-law 1.36e+00 1.15e+00 6.65e-01 5.72e-01 3.43e+00 3.75e+00   ph/cm2/s
              Error 1.33e-01 7.31e-02 5.79e-02 9.67e-02 2.18e-01 2.33e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.75e-06 2.51e-06 2.09e-06 1.29e-06 7.12e-06 7.64e-06   erg/cm2
              Error 1.14e-07 7.54e-08 9.25e-08 3.88e-07 2.53e-07 4.80e-07   erg/cm2
Peak flux Cutoff-PL 1.23e+00 1.25e+00 6.85e-01 2.43e-01 3.33e+00 3.41e+00   ph/cm2/s
              Error 1.53e-01 9.54e-02 6.52e-02 1.26e-01 2.25e-01 2.56e-01   ph/cm2/s
 
Fluence        Band 8.25e-06 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 1.16e+00 1.31e+00 6.42e-01 4.18e-01 3.32e+00 3.54e+00   ph/cm2/s
              Error 1.70e-01 1.10e-01 6.31e-02 9.18e-02 2.25e-01 2.52e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.183    0.053    -      -           3.98e-03 1.13e-04   65.900 57
CPL   1.518    0.251      33.4    6.6      8.85e-03 2.69e-03   41.760 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.793    0.107    -      -           2.49e-02 1.70e-03   61.360 57
CPL   1.030    0.486      58.0   15.6      6.48e-02 4.29e-02   52.650 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: 120.000000 sec.
T50 in the 50-300 keV band: 21.248000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  203.116  -14.988  188.128
T90   121.124   37.328  158.452
T50    27.032   99.436  126.468
Peak    1.000  110.668  111.668

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  196.1202 +59.4221 0.0032   28.6  -19.1      15.1388    60.4  TRIG_00553977       
------------------------------------------
 
Foreground time interval of the image:
-14.988 188.128 (delta_t = 203.116 [sec])
Background time interval of the image:
-239.000 -174.620 (delta_t =  64.380 [sec])
-174.000 -14.988 (delta_t = 159.012 [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  -14.988 sec. to  188.128 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.18323     ( -0.052891   0.0533573 )
Norm@50keV  : 3.98106E-03    ( -0.000113478   0.000113039 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.90 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     57 degrees of freedom 
# Null hypothesis probability =   1.962340e-01
 
Photon flux (15-150 keV)    in 203.1 sec: 0.653323 ( -0.0193523  0.01946 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.58465e-06 ( -1.98034e-07  1.98207e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -14.988 sec. to  188.128 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51754     ( -0.25866   0.242973 )
Epeak [keV] : 33.3863      ( -8.33086 4.94237 )
Norm@50keV  : 8.84503E-03    ( -0.00219989   0.00318403 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.76 using 59 PHA bins.
# Reduced chi-squared =         0.7456 for     56 degrees of freedom 
# Null hypothesis probability =   9.216515e-01
 
Photon flux (15-150 keV)    in 203.1 sec: 0.616737 ( -0.022663  0.022835 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.11725e-06 ( -2.52108e-07  2.53286e-07 ) ergs/cm2
 
Band function
Time interval is from  -14.988 sec. to  188.128 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.972227   ( -0.537264   0.899748 )
beta        : -2.50792    ( -0.295794   0.15846 )
Epeak [keV] : 34.0788      ( -3.55743 3.46755 )
Norm@50keV   : 1.91554E-02    ( -0.0102016   0.0560688 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.52 using 59 PHA bins.
# Reduced chi-squared =         0.6639 for     55 degrees of freedom 
# Null hypothesis probability =   9.741228e-01
 
Photon flux (15-150 keV)    in 203.1 sec: 0.589171 ( 6.41083  -0.023844 ) 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]    : 10.7273  (  )
R^2/D10^2   : 0.206116  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         256.03 using 59 PHA bins.
# Reduced chi-squared =         4.4917 for     57 degrees of freedom 
# Null hypothesis probability =   5.002579e-27
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.001e-06   4.885e-08
25- 50  2.740e-06   7.413e-08
50-150  1.746e-06   1.027e-07
15-150  5.487e-06   1.564e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 57.5409       (-4.30024      4.61012)
Norm        : 3.32332       (-0.173931     0.17872)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.94 using 59 PHA bins.
# Reduced chi-squared =         0.7533 for     57 degrees of freedom 
# Null hypothesis probability =   9.162256e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.684e-06   7.393e-08
25- 50  2.530e-06   7.312e-08
50-150  2.779e-06   1.574e-07
15-150  6.994e-06   1.990e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.86544        (-0.66957      0.649734)
R1^2/D10^2  : 0.889255        (-0.235876      0.384854)
kT2 [keV]   : 20.6646        (-2.6291      3.56936)
R2^2/D10^2  : 9.68366E-03    (-0.00470619   0.00799008)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.54 using 59 PHA bins.
# Reduced chi-squared =         0.8644 for     55 degrees of freedom 
# Null hypothesis probability =   7.522602e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.499e-06   1.243e-07
25- 50  2.579e-06   1.493e-07
50-150  2.856e-06   4.011e-07
15-150  6.935e-06   5.768e-07

Peak spectrum fit

Power-law model
Time interval is from  110.668 sec. to  111.668 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.79291     ( -0.105762   0.107643 )
Norm@50keV  : 2.49407E-02    ( -0.00170184   0.00168891 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.36 using 59 PHA bins.
# Reduced chi-squared =          1.077 for     57 degrees of freedom 
# Null hypothesis probability =   3.224264e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.42738 ( -0.217697  0.217895 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.29667e-07 ( -1.59618e-08  1.60579e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  110.668 sec. to  111.668 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.03014     ( -0.514622   0.456964 )
Epeak [keV] : 58.0407      ( -9.06678 22.1344 )
Norm@50keV  : 6.47773E-02    ( -0.0277723   0.0579756 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.65 using 59 PHA bins.
# Reduced chi-squared =         0.9402 for     56 degrees of freedom 
# Null hypothesis probability =   6.024004e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.33324 ( -0.22455  0.22463 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.16548e-07 ( -1.7603e-08  1.7787e-08 ) ergs/cm2
 
Band function
Time interval is from  110.668 sec. to  111.668 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.191328   ( -1.27283   -0.203741 )
beta        : -2.10577    ( -0.638015   0.214684 )
Epeak [keV] : 38.1747      ( -10.4978 19.9673 )
Norm@50keV   : 0.441603    ( -0.475773   703.346 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.85 using 59 PHA bins.
# Reduced chi-squared =         0.9063 for     55 degrees of freedom 
# Null hypothesis probability =   6.713049e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.32302 ( 3.67698  -0.22488 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.20283e-07 ( -2.20276e-07  -1.663e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.7982  (-0.847466  0.92457)
R^2/D10^2   : 0.891802  (-0.221108   0.288998)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          95.51 using 59 PHA bins.
# Reduced chi-squared =          1.676 for     57 degrees of freedom 
# Null hypothesis probability =   1.055567e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.621e-08   2.880e-09
25- 50  8.086e-08   5.835e-09
50-150  6.690e-08   9.030e-09
15-150  1.740e-07   1.315e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.9335       (-19.5201      29.136)
Norm        : 15.2505       (-1.32097     1.44665)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.39 using 59 PHA bins.
# Reduced chi-squared =         0.9367 for     57 degrees of freedom 
# Null hypothesis probability =   6.112957e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.986e-08   4.260e-09
25- 50  6.892e-08   5.245e-09
50-150  1.116e-07   3.318e-08
15-150  2.204e-07   3.645e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.33019        (      )
R1^2/D10^2  : 3.58540        (-1.43161      2.92114)
kT2 [keV]   : 23.4176        (-4.89085      9.01561)
R2^2/D10^2  : 4.53151E-02    (-0.0321112   0.0741351)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.48 using 59 PHA bins.
#Fit statistic : Chi-Squared =          49.19 using 59 PHA bins.
# Reduced chi-squared =         0.9541 for     55 degrees of freedom 
# Reduced chi-squared =         0.8943 for     55 degrees of freedom 
# Null hypothesis probability =   5.715886e-01
# Null hypothesis probability =   6.953489e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.635e-08   1.766e-08
25- 50  6.831e-08   3.103e-08
50-150  9.645e-08   5.124e-08
15-150  2.011e-07   8.759e-08
Plot creation:
Sat Apr 20 19:13:24 EDT 2013