batgrbproduct Analysis for Trigger=553918

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Apr 20 07:38:36 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger553918/GCN5_download_cron
======================================================================

  Trigger: 00553918      Segment: 000

  BAT Trigger Time: 388071040   [s; MET]
      Trigger Stop: 388071152   [s; MET]
               UTC: 2013-04-19T13:30:29.541280    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 355.270512385986   Dec: 9.97717701299357  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.58
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.58

  Flight Position:   [ source = BAT ]
    RA: 355.270512385986   Dec: 9.97717701299357  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 355.2779188581   Dec: 9.90017882356512  [deg; J2000]  
        { 23h 41m 06.7s , +09d 54' 00.6" }
         +/- 2.57973007370883 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.14644646918521 [arcmin] (formal 1-sigma fit error)
    SNR: 7.85516192654548
 
  Angular difference between Flight and Ground position is 4.640581 arcmin
 
  Partial Coding Fraction: 0.828125    [ including projection effects ]

  Duration
     T90: 75.6479999423027 +/- 49.6427516774232
        Measured from: 44.7760001420975
                   to: 120.4240000844     [s; relative to TRIGTIME]
     T50: 40.191999912262 +/- 18.3168975960744
        Measured from: 55.8040001392365
                   to: 95.9960000514984     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 55.4319999814034     
                   to: 56.4319999814034     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 40.0920000076294     
                   to: 169.508000016212     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.299611   0.478988   0.309717   0.129209
           0.065759   0.067691   0.059072   0.051127 [error]
 Peak      0.014825   0.014315   0.008671   0.014119
           0.005865   0.006079   0.005337   0.004396 [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 9.75e-08 1.86e-07 2.76e-07 8.78e-07 7.79e-07 1.44e-06   erg/cm2
              Error 2.66e-08 3.13e-08 5.84e-08 4.02e-07 1.42e-07 4.47e-07   erg/cm2
Peak flux Power-law 1.20e-01 1.10e-01 6.96e-02 6.75e-02 3.28e-01 3.67e-01   ph/cm2/s
              Error 1.08e-01 5.25e-02 5.86e-02 1.34e-01 2.35e-01 1.64e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.90e-08 1.97e-07 2.86e-07 4.06e-07 7.48e-07 9.78e-07   erg/cm2
              Error 3.25e-08 3.97e-08 6.47e-08 4.98e-07 1.59e-07 4.85e-07   erg/cm2
Peak flux Cutoff-PL 1.30e-01 1.11e-01 6.51e-02 5.77e-02 3.29e-01 3.56e-01   ph/cm2/s
              Error 8.57e-02 4.80e-02 5.84e-02 9.00e-02 1.43e-01 2.67e-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    1.434    0.281    -      -           6.28e-04 1.03e-04   60.550 57
CPL   0.891    1.167     102.4    0.0      1.18e-03 0.00e+00   59.950 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.657    1.154    -      -           2.50e-03 1.32e-03   54.830 57
CPL   2.118    1.211      45.5    0.0      1.33e-03 0.00e+00   54.200 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: 43.264000 sec.
T50 in the 50-300 keV band: 20.672000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  129.416   40.092  169.508
T90    75.648   44.776  120.424
T50    40.192   55.804   95.996
Peak    1.000   55.432   56.432

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  355.2779  +9.9002 0.0244   23.2 -133.2       1.1631     7.9  TRIG_00553918       
------------------------------------------
 
Foreground time interval of the image:
 40.092 169.508 (delta_t = 129.416 [sec])
Background time interval of the image:
-239.000  40.092 (delta_t = 279.092 [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   40.092 sec. to  169.508 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.43436     ( -0.279231   0.282537 )
Norm@50keV  : 6.27540E-04    ( -0.000103201   0.000102355 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.55 using 59 PHA bins.
# Reduced chi-squared =          1.062 for     57 degrees of freedom 
# Null hypothesis probability =   3.490748e-01
 
Photon flux (15-150 keV)    in 129.4 sec: 7.70401E-02 ( -0.0124762  0.0124977 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.79341e-07 ( -1.41218e-07  1.43656e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   40.092 sec. to  169.508 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.890919     ( -1.54322   0.790457 )
Epeak [keV] : 102.386      (   )
Norm@50keV  : 1.17891E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.95 using 59 PHA bins.
# Reduced chi-squared =          1.071 for     56 degrees of freedom 
# Null hypothesis probability =   3.345366e-01
 
Photon flux (15-150 keV)    in 129.4 sec: 7.52133E-02 ( -0.0132763  0.0131176 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.47799e-07 ( -1.57899e-07  1.59123e-07 ) ergs/cm2
 
Band function
Time interval is from   40.092 sec. to  169.508 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.782950   ( 0.782825   0.782825 )
beta        : -1.87873    ( 1.88047   0.68961 )
Epeak [keV] : 89.8137      ( -89.8388 -89.8388 )
Norm@50keV   : 1.36084E-03    ( -0.000822326   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.91 using 59 PHA bins.
# Reduced chi-squared =          1.089 for     55 degrees of freedom 
# Null hypothesis probability =   3.021629e-01
 
Photon flux (15-150 keV)    in 129.4 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]    : 15.3702  (-2.67025  3.44113)
R^2/D10^2   : 8.23578E-03  (-0.00416863   0.00780476)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.15 using 59 PHA bins.
# Reduced chi-squared =          1.143 for     57 degrees of freedom 
# Null hypothesis probability =   2.142650e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.249e-08   1.691e-08
25- 50  2.132e-07   5.899e-08
50-150  3.465e-07   1.181e-07
15-150  6.122e-07   1.341e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-86.0153      -199.363)
Norm        : 0.316975       (-0.0505247     0.0505258)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.60 using 59 PHA bins.
# Reduced chi-squared =          1.063 for     57 degrees of freedom 
# Null hypothesis probability =   3.473327e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.021e-07   5.919e-08
25- 50  1.965e-07   1.108e-07
50-150  4.309e-07   2.404e-07
15-150  7.295e-07   4.151e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.19636        (-1.81108      10.7381)
R1^2/D10^2  : 16.3331        (-17.0114      2784.68)
kT2 [keV]   : 17.1066        (-3.30611      -17.0901)
R2^2/D10^2  : 5.43477E-03    (-0.00477411   0.00505907)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.24 using 59 PHA bins.
# Reduced chi-squared =          1.077 for     55 degrees of freedom 
# Null hypothesis probability =   3.234833e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.470e-08   3.288e-08
25- 50  1.879e-07   6.526e-08
50-150  3.895e-07   1.531e-07
15-150  6.621e-07   2.197e-07

Peak spectrum fit

Power-law model
Time interval is from   55.432 sec. to   56.432 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65676     ( -1.17397   1.13474 )
Norm@50keV  : 2.50388E-03    ( -0.00143694   0.00120618 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.83 using 59 PHA bins.
# Reduced chi-squared =         0.9619 for     57 degrees of freedom 
# Null hypothesis probability =   5.568926e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.327725 ( -0.327725  0.143039 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.32488e-08 ( -2.32488e-08  1.34052e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   55.432 sec. to   56.432 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.11809     ( -2.34286   0.0794675 )
Epeak [keV] : 45.5238      (   )
Norm@50keV  : 1.32603E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.20 using 59 PHA bins.
# Reduced chi-squared =         0.9678 for     56 degrees of freedom 
# Null hypothesis probability =   5.434740e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.328723 ( -0.143463  0.142835 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.15467e-08 ( -2.15467e-08  1.41742e-08 ) ergs/cm2
 
Band function
Time interval is from   55.432 sec. to   56.432 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.96327   ( -4.96327   -4.96327 )
beta        : -2.06820    ( 2.0682   1.50211 )
Epeak [keV] : 26.9530      ( -26.953 45.1733 )
Norm@50keV   : 200.736    ( -86.5555   5.75968e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.70 using 59 PHA bins.
# Reduced chi-squared =         0.9945 for     55 degrees of freedom 
# Null hypothesis probability =   4.861061e-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]    : 6.97609  (-2.45812  5.36579)
R^2/D10^2   : 0.595681  (-0.595681   2.94444)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.78 using 59 PHA bins.
# Reduced chi-squared =         0.9962 for     57 degrees of freedom 
# Null hypothesis probability =   4.832603e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.641e-09   3.057e-09
25- 50  6.313e-09   4.358e-09
50-150  1.033e-09   1.071e-09
15-150  1.199e-08   8.160e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.357       (-199.362      -199.362)
Norm        : 1.29512       (-0.573836     2.48004)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.47 using 59 PHA bins.
# Reduced chi-squared =         0.9732 for     57 degrees of freedom 
# Null hypothesis probability =   5.325866e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.225e-09   2.165e-09
25- 50  6.204e-09   3.907e-09
50-150  1.361e-08   8.950e-09
15-150  2.303e-08   1.531e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.37291        (-1.90605      2.63272)
R1^2/D10^2  : 0.773315        (-0.656077      1.69684)
kT2 [keV]   : 199.363        (-199.363      -199.363)
R2^2/D10^2  : 7.24327E-05    (-4.58423e-05   0.0017879)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.08 using 59 PHA bins.
# Reduced chi-squared =         0.9105 for     55 degrees of freedom 
# Null hypothesis probability =   6.627126e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.621e-09   2.872e-09
25- 50  5.922e-09   3.671e-09
50-150  1.978e-08   5.570e-09
15-150  3.032e-08   8.730e-09
Plot creation:
Sat Apr 20 08:05:40 EDT 2013