batgrbproduct Analysis for Trigger=548760

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Feb 15 09:46:56 EST 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger548760/GCN5_download_cron
======================================================================

  Trigger: 00548760      Segment: 000

  BAT Trigger Time: 382584700.416   [s; MET]
      Trigger Stop: 382584716.8   [s; MET]
               UTC: 2013-02-15T01:31:30.197800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 43.4794556448911   Dec: 13.3706926231607  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.16
     Image Trigger?:     NO
     Rate S/N Ratio:     19.6468827043885  [ if not an image trigger ]
     Image S/N Ratio:    8.16

  Flight Position:   [ source = BAT ]
    RA: 43.4794556448911   Dec: 13.3706926231607  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 43.4862689501498   Dec: 13.3871086018421  [deg; J2000]  
        { 02h 53m 56.7s , +13d 23' 13.6" }
         +/- 1.48979340414527 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.607932542896142 [arcmin] (formal 1-sigma fit error)
    SNR: 17.2105779821753
 
  Angular difference between Flight and Ground position is 1.062220 arcmin
 
  Partial Coding Fraction: 0.08398438    [ including projection effects ]

  Duration
     T90: 65.7440000772476 +/- 10.8000118319369
        Measured from: -2.66399991512299
                   to: 63.0800001621246     [s; relative to TRIGTIME]
     T50: 28.6400000452995 +/- 7.31892888315766
        Measured from: 6.76000010967255
                   to: 35.4000001549721     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 11.1639999747276     
                   to: 12.1639999747276     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -5.83200001716614     
                   to: 73.3840000033379     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.760010   2.683351   2.383934   0.575057
           0.187221   0.200493   0.184482   0.165419 [error]
 Peak      0.049933   0.118487   0.086800   0.026547
           0.022491   0.023712   0.022633   0.020141 [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 7.93e-07 1.38e-06 1.84e-06 5.02e-06 5.37e-06 9.04e-06   erg/cm2
              Error 1.10e-07 1.18e-07 1.84e-07 1.07e-06 4.53e-07 1.21e-06   erg/cm2
Peak flux Power-law 8.70e-01 8.40e-01 5.66e-01 5.96e-01 2.52e+00 2.87e+00   ph/cm2/s
              Error 3.93e-01 2.42e-01 1.79e-01 3.78e-01 6.96e-01 7.54e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.24e-07 1.44e-06 1.92e-06 2.80e-06 5.25e-06 6.89e-06   erg/cm2
              Error 1.33e-07 1.39e-07 2.11e-07 1.95e-06 4.76e-07 1.34e-06   erg/cm2
Peak flux Cutoff-PL 6.31e-01 9.19e-01 6.50e-01 2.13e-01 2.36e+00 2.41e+00   ph/cm2/s
              Error 4.94e-01 2.94e-01 2.32e-01 4.20e-01 7.39e-01 1.03e+00   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 2.50e+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    1.586    0.135    -      -           7.23e-03 5.79e-04    0.000 57
CPL   1.126    0.545     100.5  -34.8      1.21e-02 7.82e-03    0.000 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.570    0.442    -      -           1.98e-02 5.24e-03    0.000 57
CPL   0.162    2.978      69.9    0.0      9.15e-02 0.00e+00    0.000 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: 40.576000 sec.
T50 in the 50-300 keV band: 18.304000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   79.216   -5.832   73.384
T90    65.744   -2.664   63.080
T50    28.640    6.760   35.400
Peak    1.000   11.164   12.164

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   43.4863 +13.3871 0.0112   53.9  -31.6       8.0896    17.2  TRIG_00548760       
------------------------------------------
 
Foreground time interval of the image:
 -5.832  73.384 (delta_t =  79.216 [sec])
Background time interval of the image:
-239.416  -5.832 (delta_t = 233.584 [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   -5.832 sec. to   73.384 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.58588     ( -0.134746   0.135992 )
Norm@50keV  : 7.23038E-03    ( -0.000579619   0.000577703 )
------------------------------------------------------------
#Test statistic : Chi-Squared =          63.78 using 59 PHA bins.
# Reduced chi-squared =          1.119 for     57 degrees of freedom 
# Null hypothesis probability =   2.503578e-01
 
Photon flux (15-150 keV)    in 79.22 sec: 0.925121 ( -0.0776224  0.0778817 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.36623e-06 ( -4.51819e-07  4.53331e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -5.832 sec. to   73.384 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.12589     ( -0.582353   0.507486 )
Epeak [keV] : 100.475      ( -30.9226 -100.475 )
Norm@50keV  : 1.20710E-02    ( -0.00505327   0.0105866 )
------------------------------------------------------------
#Test statistic : Chi-Squared =          61.49 using 59 PHA bins.
# Reduced chi-squared =          1.098 for     56 degrees of freedom 
# Null hypothesis probability =   2.858402e-01
 
Photon flux (15-150 keV)    in 79.22 sec: 0.905386 ( -0.080511  0.080778 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.25195e-06 ( -4.77142e-07  4.75241e-07 ) ergs/cm2
 
Band function
Time interval is from   -5.832 sec. to   73.384 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.12589   ( -0.418607   0.602275 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 100.459      ( -25.4879 -100.459 )
Norm@50keV   : 1.20697E-02    ( -0.00505366   0.0105909 )
------------------------------------------------------------
#Test statistic : Chi-Squared =          61.49 using 59 PHA bins.
# Reduced chi-squared =          1.118 for     55 degrees of freedom 
# Null hypothesis probability =   2.548372e-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]    : 15.5649  (-1.50751  1.68109)
R^2/D10^2   : 9.07011E-02  (-0.0279648   0.0400949)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Test statistic : Chi-Squared =          96.95 using 59 PHA bins.
# Reduced chi-squared =          1.701 for     57 degrees of freedom 
# Null hypothesis probability =   7.621597e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.620e-07   5.232e-08
25- 50  1.487e-06   1.699e-07
50-150  2.491e-06   3.319e-07
15-150  4.340e-06   4.175e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 192.037       (      )
Norm        : 3.77076       (-0.307594     0.356165)
------------------------------------------------------------
#Test statistic : Chi-Squared =          61.67 using 59 PHA bins.
# Reduced chi-squared =          1.082 for     57 degrees of freedom 
# Null hypothesis probability =   3.128596e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.424e-07   9.197e-08
25- 50  1.428e-06   2.800e-07
50-150  3.127e-06   1.490e-06
15-150  5.297e-06   1.487e-06
Double BB
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.17195        (-1.57201      1.84588)
R1^2/D10^2  : 0.894190        (-0.477896      1.26642)
kT2 [keV]   : 25.7882        (-4.83665      8.49501)
R2^2/D10^2  : 1.16138E-02    (-0.00750017   0.0142609)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.47 using 59 PHA bins.
#Test statistic : Chi-Squared =          59.47 using 59 PHA bins.
# Reduced chi-squared =          1.081 for     55 degrees of freedom 
# Null hypothesis probability =   3.161093e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.044e-07   2.901e-07
25- 50  1.463e-06   4.400e-07
50-150  3.111e-06   1.494e-06
15-150  5.278e-06   1.864e-06

Peak spectrum fit

Power-law model
Time interval is from   11.164 sec. to   12.164 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57021     ( -0.431847   0.451651 )
Norm@50keV  : 1.97727E-02    ( -0.0052584   0.00523147 )
------------------------------------------------------------
#Test statistic : Chi-Squared =          64.82 using 59 PHA bins.
# Reduced chi-squared =          1.137 for     57 degrees of freedom 
# Null hypothesis probability =   2.225542e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.51804 ( -0.692425  0.69984 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.85622e-07 ( -5.14832e-08  5.20309e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   11.164 sec. to   12.164 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.162354     ( -4.02871   1.9282 )
Epeak [keV] : 69.8600      (   )
Norm@50keV  : 9.15222E-02    (     )
------------------------------------------------------------
#Test statistic : Chi-Squared =          63.57 using 59 PHA bins.
# Reduced chi-squared =          1.135 for     56 degrees of freedom 
# Null hypothesis probability =   2.273652e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.35908 ( -0.73729  0.74154 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.75444e-07 ( -5.5574e-08  5.5442e-08 ) ergs/cm2
 
Band function
Time interval is from   11.164 sec. to   12.164 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.156776   ( -1.44902   5.28538 )
beta        : -10.00000    ( 10   2.09602e-07 )
Epeak [keV] : 69.7831      ( -23.0066 -69.7831 )
Norm@50keV   : 9.20910E-02    ( -0.092091   6.94417 )
------------------------------------------------------------
#Test statistic : Chi-Squared =          63.57 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     55 degrees of freedom 
# Null hypothesis probability =   2.002333e-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]    : 15.5017  (-3.68266  5.11752)
R^2/D10^2   : 0.265546  (-0.172001   0.429905)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Test statistic : Chi-Squared =          64.34 using 59 PHA bins.
# Reduced chi-squared =          1.129 for     57 degrees of freedom 
# Null hypothesis probability =   2.350855e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.328e-08   6.826e-09
25- 50  5.437e-08   2.400e-08
50-150  9.017e-08   5.149e-08
15-150  1.578e-07   8.377e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 192.996       (-120.383      -190.234)
Norm        : 10.3866       (-2.72967     3.75594)
------------------------------------------------------------
#Test statistic : Chi-Squared =          64.26 using 59 PHA bins.
# Reduced chi-squared =          1.127 for     57 degrees of freedom 
# Null hypothesis probability =   2.374080e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.597e-08   1.596e-08
25- 50  4.977e-08   2.926e-08
50-150  1.080e-07   6.225e-08
15-150  1.837e-07   1.054e-07
Double BB
kT1 [keV]   : 1.28367        (-1.71103      16.4491)
R1^2/D10^2  : 8.46524E+04        (      )
kT2 [keV]   : 16.1729        (-3.93985      5.78495)
R2^2/D10^2  : 0.222793    (-0.170411   0.20236)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.53 using 59 PHA bins.
#Test statistic : Chi-Squared =          62.53 using 59 PHA bins.
#Fit statistic : Chi-Squared =          62.37 using 59 PHA bins.
#Test statistic : Chi-Squared =          62.37 using 59 PHA bins.
# Reduced chi-squared =          1.137 for     55 degrees of freedom 
# Reduced chi-squared =          1.134 for     55 degrees of freedom 
# Null hypothesis probability =   2.264255e-01
# Null hypothesis probability =   2.306006e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.175e-08   9.109e-09
25- 50  5.029e-08   2.674e-08
50-150  9.463e-08   6.180e-08
15-150  1.667e-07   9.136e-08
Plot creation:
Fri Feb 15 10:02:20 EST 2013