batgrbproduct Analysis for Trigger=684098

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Apr 26 18:29:42 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger684098/GCN5_download_cron
======================================================================

  Trigger: 00684098      Segment: 000

  BAT Trigger Time: 483319587.52   [s; MET]
      Trigger Stop: 483319587.776   [s; MET]
               UTC: 2016-04-25T23:26:11.341240    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 280.313549845198   Dec: -54.3595799473253  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.8
     Image Trigger?:     NO
     Rate S/N Ratio:     32.9545141065682  [ if not an image trigger ]
     Image S/N Ratio:    11.8

  Flight Position:   [ source = BAT ]
    RA: 280.313549845198   Dec: -54.3595799473253  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 280.336863191682   Dec: -54.3166496109706  [deg; J2000]  
        { 18h 41m 20.8s , -54d 18' 59.9" }
         +/- 3.54446517661953 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.42627624666371 [arcmin] (formal 1-sigma fit error)
    SNR: 4.98937252953942
 
  Angular difference between Flight and Ground position is 2.701831 arcmin
 
  Partial Coding Fraction: 0.71875    [ including projection effects ]

  Duration
     T90: 304.583999931812 +/- 15.0418216869062
        Measured from: 0.196000158786774
                   to: 304.780000090599     [s; relative to TRIGTIME]
     T50: 116.351999938488 +/- 105.681125315048
        Measured from: 165.460000157356
                   to: 281.812000095844     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.271999955177307     
                   to: 0.728000044822693     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.532000005245209     
                   to: 319.800000011921     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.748797   1.580206   0.753576   0.169345
           0.115540   0.113049   0.096228   0.085798 [error]
 Peak      0.098729   0.123133   0.099649   0.018383
           0.008859   0.009168   0.008113   0.005846 [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 5.57e-07 6.70e-07 5.84e-07 8.72e-07 2.12e-06 2.68e-06   erg/cm2
              Error 6.68e-08 5.61e-08 9.42e-08 2.79e-07 2.09e-07 3.83e-07   erg/cm2
Peak flux Power-law 9.59e-01 9.41e-01 6.47e-01 6.99e-01 2.83e+00 3.25e+00   ph/cm2/s
              Error 1.27e-01 7.81e-02 6.66e-02 1.45e-01 2.26e-01 2.60e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.54e-07 6.75e-07 5.82e-07 7.70e-07 2.10e-06 2.58e-06   erg/cm2
              Error 7.16e-08 6.60e-08 9.90e-08 4.53e-07 2.44e-07 5.53e-07   erg/cm2
Peak flux Cutoff-PL 9.13e-01 9.71e-01 6.64e-01 4.96e-01 2.80e+00 3.04e+00   ph/cm2/s
              Error 1.46e-01 9.21e-02 7.36e-02 2.48e-01 2.31e-01 3.56e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 9.06e-01 9.73e-01 6.66e-01 4.83e-01 2.79e+00 3.03e+00   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.199    0.177    -      -           7.03e-04 8.04e-05   54.250 57
CPL   1.992    0.286       1.7   21.1      9.19e-04 0.00e+00   54.360 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.542    0.135    -      -           2.24e-02 1.83e-03   58.950 57
CPL   1.249    0.444     127.5    0.0      3.16e-02 0.00e+00   57.840 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: 286.272000 sec.
T50 in the 50-300 keV band: 199.616000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  320.332   -0.532  319.800
T90   304.584    0.196  304.780
T50   116.352  165.460  281.812
Peak    1.000   -0.272    0.728

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  280.3369 -54.3166 0.0386   24.7 -127.1       0.9373     5.0  TRIG_00684098       
------------------------------------------
 
Foreground time interval of the image:
 -0.532 140.781 (delta_t = 141.313 [sec])
Background time interval of the image:
-239.520  -0.532 (delta_t = 238.988 [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   -0.532 sec. to  319.800 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.19875     ( -0.171979   0.181208 )
Norm@50keV  : 7.03148E-04    ( -8.12717e-05   7.94801e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.25 using 59 PHA bins.
# Reduced chi-squared =         0.9517 for     57 degrees of freedom 
# Null hypothesis probability =   5.790543e-01
 
Photon flux (15-150 keV)    in 320.3 sec: 0.116332 ( -0.00962806  0.00964025 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.11716e-06 ( -2.06699e-07  2.10825e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.532 sec. to  319.800 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99204     ( -0.55011   0.0215451 )
Epeak [keV] : 1.65548      ( -0.824294 41.3437 )
Norm@50keV  : 9.19251E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.36 using 59 PHA bins.
# Reduced chi-squared =         0.9707 for     56 degrees of freedom 
# Null hypothesis probability =   5.371894e-01
 
Photon flux (15-150 keV)    in 320.3 sec: 0.115943 ( -0.010281  0.009918 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.10322e-06 ( -2.50135e-07  2.38748e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.532 sec. to  319.800 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.67819   ( 2.67819   2.67819 )
beta        : -2.19875    ( -0.181212   0.17206 )
Epeak [keV] : 11.1896      ( -11.1896 -11.1896 )
Norm@50keV   : 9.55680E-02    ( -0.0110461   0.0108023 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.25 using 59 PHA bins.
# Reduced chi-squared =         0.9863 for     55 degrees of freedom 
# Null hypothesis probability =   5.034068e-01
 
Photon flux (15-150 keV)    in 320.3 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]    : 8.75131  (-0.895878  1.0109)
R^2/D10^2   : 8.47416E-02  (-0.029909   0.0462248)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          91.69 using 59 PHA bins.
# Reduced chi-squared =          1.609 for     57 degrees of freedom 
# Null hypothesis probability =   2.433610e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.986e-07   6.081e-08
25- 50  8.105e-07   8.552e-08
50-150  2.836e-07   8.361e-08
15-150  1.493e-06   1.549e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 50.5171       (-11.1544      16.539)
Norm        : 0.641477       (-0.0951698     0.1221)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.90 using 59 PHA bins.
# Reduced chi-squared =          1.016 for     57 degrees of freedom 
# Null hypothesis probability =   4.420340e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.036e-07   5.717e-08
25- 50  7.259e-07   6.358e-08
50-150  7.116e-07   1.579e-07
15-150  1.941e-06   2.079e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.14194        (-1.23223      1.25733)
R1^2/D10^2  : 0.546383        (-0.309162      0.878714)
kT2 [keV]   : 18.6430        (-4.7755      8.39253)
R2^2/D10^2  : 3.10210E-03    (-0.00233846   0.00744251)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.03 using 59 PHA bins.
# Reduced chi-squared =          1.019 for     55 degrees of freedom 
# Null hypothesis probability =   4.359771e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.438e-07   2.090e-07
25- 50  6.568e-07   2.132e-07
50-150  8.405e-07   4.580e-07
15-150  2.041e-06   6.842e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.272 sec. to    0.728 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54155     ( -0.134167   0.135834 )
Norm@50keV  : 2.23845E-02    ( -0.00183625   0.00182573 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.95 using 59 PHA bins.
# Reduced chi-squared =          1.034 for     57 degrees of freedom 
# Null hypothesis probability =   4.039588e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.82686 ( -0.226173  0.226354 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.10987e-07 ( -1.8769e-08  1.89e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.272 sec. to    0.728 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.24873     ( -0.524279   0.362804 )
Epeak [keV] : 127.504      (   )
Norm@50keV  : 3.16460E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.84 using 59 PHA bins.
# Reduced chi-squared =          1.033 for     56 degrees of freedom 
# Null hypothesis probability =   4.070587e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.79700 ( -0.23122  0.23119 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.06961e-07 ( -2.014e-08  2.0079e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.272 sec. to    0.728 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.24893   ( -0.277676   0.586117 )
beta        : -10.0000    ( 10   0 )
Epeak [keV] : 127.529      ( -40.3191 -127.529 )
Norm@50keV   : 3.16353E-02    ( -0.0106047   0.0261555 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.84 using 59 PHA bins.
# Reduced chi-squared =          1.052 for     55 degrees of freedom 
# Null hypothesis probability =   3.707567e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.79242 (    ) 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]    : 14.5435  (-1.58554  1.79604)
R^2/D10^2   : 0.352946  (-0.118264   0.177508)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         102.21 using 59 PHA bins.
# Reduced chi-squared =         1.7932 for     57 degrees of freedom 
# Null hypothesis probability =   2.220924e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.570e-08   2.530e-09
25- 50  6.061e-08   6.625e-09
50-150  8.601e-08   1.435e-08
15-150  1.623e-07   1.680e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (-61.7902      -199.363)
Norm        : 11.5556       (-0.905789     0.90683)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.87 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     57 degrees of freedom 
# Null hypothesis probability =   4.430597e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.877e-08   2.750e-09
25- 50  5.535e-08   9.035e-09
50-150  1.214e-07   3.550e-08
15-150  2.055e-07   4.215e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.64652        (-1.17492      1.39041)
R1^2/D10^2  : 3.74034        (-1.80275      3.83276)
kT2 [keV]   : 26.4340        (-4.77698      7.62807)
R2^2/D10^2  : 3.45301E-02    (-0.0200865   0.036493)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.10 using 59 PHA bins.
# Reduced chi-squared =         0.9655 for     55 degrees of freedom 
# Null hypothesis probability =   5.474598e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.914e-08   8.895e-09
25- 50  5.470e-08   1.342e-08
50-150  1.259e-07   4.448e-08
15-150  2.097e-07   6.498e-08
Plot creation:
Tue Apr 26 18:34:26 EDT 2016