batgrbproduct Analysis for Trigger=554635

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Apr 28 06:02:10 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger554635/GCN5_download_cron
======================================================================

  Trigger: 00554635      Segment: 000

  BAT Trigger Time: 388761652.288   [s; MET]
      Trigger Stop: 388761653.312   [s; MET]
               UTC: 2013-04-27T13:20:41.798740    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 314.890834623513   Dec: -22.5305015261419  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.7
     Image Trigger?:     NO
     Rate S/N Ratio:     12.1655250605964  [ if not an image trigger ]
     Image S/N Ratio:    8.7

  Flight Position:   [ source = BAT ]
    RA: 314.890834623513   Dec: -22.5305015261419  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 314.900441084028   Dec: -22.5424434741654  [deg; J2000]  
        { 20h 59m 36.1s , -22d 32' 32.8" }
         +/- 1.30997858456463 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.410171618898988 [arcmin] (formal 1-sigma fit error)
    SNR: 20.6822650822762
 
  Angular difference between Flight and Ground position is 0.892646 arcmin
 
  Partial Coding Fraction: 0.2226562    [ including projection effects ]

  Duration
     T90: 28.4319999814034 +/- 8.45389189457727
        Measured from: -0.0399998426437378
                   to: 28.3920001387596     [s; relative to TRIGTIME]
     T50: 5.02400004863739 +/- 3.6999805775911
        Measured from: 1.59200012683868
                   to: 6.61600017547607     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.972000002861023     
                   to: 1.97200000286102     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.61599999666214     
                   to: 36.8080000281334     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.634619   0.988006   0.597165   0.163727
           0.075270   0.075463   0.064175   0.054228 [error]
 Peak      0.091718   0.141238   0.119967   0.044383
           0.015560   0.017758   0.015926   0.010891 [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 2.30e-07 3.93e-07 5.12e-07 1.35e-06 1.50e-06 2.48e-06   erg/cm2
              Error 3.47e-08 3.71e-08 6.28e-08 3.47e-07 1.51e-07 3.99e-07   erg/cm2
Peak flux Power-law 1.01e+00 1.06e+00 7.93e-01 9.57e-01 3.23e+00 3.82e+00   ph/cm2/s
              Error 2.23e-01 1.49e-01 1.20e-01 2.90e-01 4.25e-01 4.93e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.18e-07 4.12e-07 5.20e-07 7.30e-07 1.46e-06 1.88e-06   erg/cm2
              Error 3.91e-08 4.69e-08 6.73e-08 6.10e-07 1.69e-07 6.09e-07   erg/cm2
Peak flux Cutoff-PL 9.68e-01 1.09e+00 8.17e-01 8.31e-01 3.22e+00 3.61e+00   ph/cm2/s
              Error 2.56e-01 1.75e-01 1.42e-01 3.11e-01 4.28e-01 6.35e-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    1.619    0.157    -      -           4.30e-03 4.07e-04   43.190 57
CPL   1.229    0.594      93.8  -29.6      6.93e-03 5.91e-03   41.940 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.424    0.207    -      -           2.64e-02 3.38e-03   40.640 57
CPL   1.182    0.646     176.3    0.0      3.49e-02 3.61e-02   40.350 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: 10.496000 sec.
T50 in the 50-300 keV band: 2.496000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   37.424   -0.616   36.808
T90    28.432   -0.040   28.392
T50     5.024    1.592    6.616
Peak    1.000    0.972    1.972

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  314.9004 -22.5424 0.0093   37.5  -70.9       1.9976    20.7  TRIG_00554635       
------------------------------------------
 
Foreground time interval of the image:
 -0.616   8.313 (delta_t =   8.929 [sec])
Background time interval of the image:
-239.288  -0.616 (delta_t = 238.672 [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   -0.616 sec. to   36.808 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.61931     ( -0.156327   0.15762 )
Norm@50keV  : 4.30356E-03    ( -0.000407848   0.000405382 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.19 using 59 PHA bins.
# Reduced chi-squared =         0.7577 for     57 degrees of freedom 
# Null hypothesis probability =   9.117889e-01
 
Photon flux (15-150 keV)    in 37.42 sec: 0.556387 ( -0.0521314  0.0522267 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.50265e-06 ( -1.50808e-07  1.51992e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.616 sec. to   36.808 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.22930     ( -0.686872   0.500505 )
Epeak [keV] : 93.8458      ( -34.7217 -93.858 )
Norm@50keV  : 6.92505E-03    ( -0.00291006   0.00890708 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.94 using 59 PHA bins.
# Reduced chi-squared =         0.7489 for     56 degrees of freedom 
# Null hypothesis probability =   9.184862e-01
 
Photon flux (15-150 keV)    in 37.42 sec: 0.547887 ( -0.053743  0.053747 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.45522e-06 ( -1.70066e-07  1.68697e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.616 sec. to   36.808 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.40992   ( -5.35436   -4.40992 )
beta        : -1.82967    ( -0.225656   0.206054 )
Epeak [keV] : 28.5879      ( -4.81895 4.32632 )
Norm@50keV   : 89.0237    ( -8.01731   1218.63 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.91 using 59 PHA bins.
# Reduced chi-squared =         0.6893 for     55 degrees of freedom 
# Null hypothesis probability =   9.617994e-01
 
Photon flux (15-150 keV)    in 37.42 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]    : 12.8153  (-1.45127  1.70626)
R^2/D10^2   : 0.107617  (-0.0395963   0.0600864)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.05 using 59 PHA bins.
# Reduced chi-squared =          1.194 for     57 degrees of freedom 
# Null hypothesis probability =   1.499894e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.403e-07   2.402e-08
25- 50  4.757e-07   5.332e-08
50-150  4.897e-07   9.862e-08
15-150  1.106e-06   1.308e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 163.479       (-58.4448      -162.857)
Norm        : 2.28786       (-0.228253     0.284801)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.85 using 59 PHA bins.
# Reduced chi-squared =         0.7343 for     57 degrees of freedom 
# Null hypothesis probability =   9.337556e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.181e-07   2.801e-08
25- 50  4.093e-07   1.627e-07
50-150  8.361e-07   4.543e-07
15-150  1.464e-06   6.379e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.20823        (-1.5506      1.68512)
R1^2/D10^2  : 0.413198        (-0.188944      0.405913)
kT2 [keV]   : 34.3903        (-11.0919      37.0344)
R2^2/D10^2  : 2.31763E-03    (-0.00198882   0.00386264)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.80 using 59 PHA bins.
# Reduced chi-squared =         0.6691 for     55 degrees of freedom 
# Null hypothesis probability =   9.718960e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.066e-07   7.056e-08
25- 50  4.465e-07   1.418e-07
50-150  8.472e-07   4.261e-07
15-150  1.500e-06   5.392e-07

Peak spectrum fit

Power-law model
Time interval is from    0.972 sec. to    1.972 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.42376     ( -0.207099   0.20716 )
Norm@50keV  : 2.64130E-02    ( -0.00337919   0.00337315 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.64 using 59 PHA bins.
# Reduced chi-squared =         0.7130 for     57 degrees of freedom 
# Null hypothesis probability =   9.500518e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.23440 ( -0.424496  0.425092 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.54013e-07 ( -3.50306e-08  3.51905e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.972 sec. to    1.972 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.18206     ( -0.866065   0.426397 )
Epeak [keV] : 176.294      ( -176.304 -176.304 )
Norm@50keV  : 3.49107E-02    ( -0.0155721   0.0566565 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.35 using 59 PHA bins.
# Reduced chi-squared =         0.7206 for     56 degrees of freedom 
# Null hypothesis probability =   9.428723e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.21856 ( -0.42754  0.42788 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.3289e-07 ( -3.4605e-08  3.5911e-08 ) ergs/cm2
 
Band function
Time interval is from    0.972 sec. to    1.972 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.72875   ( -4.72875   -4.72875 )
beta        : -1.58225    ( -0.278049   0.254589 )
Epeak [keV] : 28.5864      ( -8.46171 6.22443 )
Norm@50keV   : 780.001    ( -98.4052   1.21086e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.59 using 59 PHA bins.
# Reduced chi-squared =         0.7016 for     55 degrees of freedom 
# Null hypothesis probability =   9.544072e-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]    : 16.3965  (-2.65313  3.18419)
R^2/D10^2   : 0.280193  (-0.128448   0.236616)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.53 using 59 PHA bins.
# Reduced chi-squared =          1.009 for     57 degrees of freedom 
# Null hypothesis probability =   4.555445e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.549e-08   3.910e-09
25- 50  6.653e-08   1.484e-08
50-150  1.262e-07   3.021e-08
15-150  2.082e-07   3.610e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 13.4630       (-1.71388     1.71375)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.55 using 59 PHA bins.
# Reduced chi-squared =         0.7289 for     57 degrees of freedom 
# Null hypothesis probability =   9.381976e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.353e-08   1.883e-08
25- 50  6.449e-08   3.568e-08
50-150  1.415e-07   7.730e-08
15-150  2.395e-07   1.330e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.51996        (-2.27803      3.39536)
R1^2/D10^2  : 2.72664        (-1.85577      6.07477)
kT2 [keV]   : 30.3927        (-9.18163      52.4551)
R2^2/D10^2  : 2.59919E-02    (-0.0243257   0.0412792)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.17 using 59 PHA bins.
# Reduced chi-squared =         0.7122 for     55 degrees of freedom 
# Null hypothesis probability =   9.472783e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.025e-08   1.688e-08
25- 50  6.468e-08   3.480e-08
50-150  1.589e-07   8.847e-08
15-150  2.538e-07   1.316e-07
Plot creation:
Sun Apr 28 06:19:26 EDT 2013