batgrbproduct Analysis for Trigger=688452

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jun  2 12:55:56 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger688452
======================================================================

  Trigger: 00688452      Segment: 000

  BAT Trigger Time: 486484998.776   [s; MET]
      Trigger Stop: 486484998.84   [s; MET]
               UTC: 2016-06-01T14:43:02.422720    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 235.033918410918   Dec: 64.4946031295717  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.25
     Image Trigger?:     NO
     Rate S/N Ratio:     32.2955105239103  [ if not an image trigger ]
     Image S/N Ratio:    7.25

  Flight Position:   [ source = BAT ]
    RA: 235.033918410918   Dec: 64.4946031295717  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 234.92326072297   Dec: 64.5315244634172  [deg; J2000]  
        { 15h 39m 41.6s , +64d 31' 53.5" }
         +/- 1.85603085712621 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.744474882577185 [arcmin] (formal 1-sigma fit error)
    SNR: 12.5726043316096
 
  Angular difference between Flight and Ground position is 3.615229 arcmin
 
  Partial Coding Fraction: 0.6640625    [ including projection effects ]

  Duration
     T90: 0.119999945163727 +/- 0.0226274207069314
        Measured from: -0.0120000243186951
                   to: 0.107999920845032     [s; relative to TRIGTIME]
     T50: 0.0559999346733093 +/- 0.0169705971403055
        Measured from: 0.0199999809265137
                   to: 0.075999915599823     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.448000013828278     
                   to: 0.551999986171722     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0200000405311584     
                   to: 0.120000004768372     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.017305   0.031920   0.033988   0.010134
           0.003738   0.004232   0.004301   0.003447 [error]
 Peak      0.019055   0.039388   0.041758   0.010757
           0.007715   0.008002   0.007104   0.006169 [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 5.17e-09 1.26e-08 2.45e-08 1.18e-07 6.64e-08 1.60e-07   erg/cm2
              Error 1.35e-09 1.97e-09 4.04e-09 4.43e-08 1.05e-08 4.69e-08   erg/cm2
Peak flux Power-law 2.03e-01 2.74e-01 2.72e-01 4.89e-01 9.07e-01 1.24e+00   ph/cm2/s
              Error 8.34e-02 6.92e-02 5.67e-02 2.22e-01 1.85e-01 2.61e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.11e-09 1.27e-08 2.47e-08 1.07e-07 6.62e-08 1.49e-07   erg/cm2
              Error 1.51e-09 2.13e-09 4.42e-09 6.98e-08 1.09e-08 6.68e-08   erg/cm2
Peak flux Cutoff-PL 1.62e-01 2.77e-01 2.96e-01 2.76e-01 8.76e-01 1.01e+00   ph/cm2/s
              Error 1.04e-01 7.83e-02 7.20e-02 2.19e-01 1.94e-01 3.17e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.70e-01 2.78e-01 2.92e-01 3.00e-01 8.83e-01 1.04e+00   ph/cm2/s
              Error -------- -------- -------- 1.64e-01 1.89e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.040    0.243    -      -           4.44e-02 6.07e-03   52.430 57
CPL   1.034    0.609    9995.5    0.0      4.47e-02 0.00e+00   52.430 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.009    0.345    -      -           7.88e-03 1.57e-03   68.380 57
CPL   0.292    1.354     144.6    0.0      1.56e-02 3.15e-02   67.450 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: 0.064000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.140   -0.020    0.120
T90     0.120   -0.012    0.108
T50     0.056    0.020    0.076
Peak    1.000   -0.448    0.552

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  234.9233 +64.5315 0.0153   25.9  144.6       0.1019    12.6  TRIG_00688452       
------------------------------------------
 
Foreground time interval of the image:
 -0.020   0.120 (delta_t =   0.140 [sec])
Background time interval of the image:
-239.776  -0.020 (delta_t = 239.756 [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   -0.020 sec. to    0.120 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.03986     ( -0.245429   0.240351 )
Norm@50keV  : 4.44480E-02    ( -0.00606623   0.0060662 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.43 using 59 PHA bins.
# Reduced chi-squared =         0.9199 for     57 degrees of freedom 
# Null hypothesis probability =   6.468620e-01
 
Photon flux (15-150 keV)    in 0.14 sec: 5.12979 ( -0.70564  0.706111 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.63599e-08 ( -1.04767e-08  1.06014e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.020 sec. to    0.120 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.03450     ( -0.863857   0.354474 )
Epeak [keV] : 9995.47      ( -9994.03 -9994.03 )
Norm@50keV  : 4.47071E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.43 using 59 PHA bins.
# Reduced chi-squared =         0.9363 for     56 degrees of freedom 
# Null hypothesis probability =   6.107892e-01
 
Photon flux (15-150 keV)    in 0.14 sec: 5.12263 ( -0.72623  0.71361 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.6186e-08 ( -1.1019e-08  1.07549e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.020 sec. to    0.120 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.882922   ( 0.882922   0.882922 )
beta        : -1.03986    ( 1.03986   0.24609 )
Epeak [keV] : 49.1561      ( -49.1561 -49.1561 )
Norm@50keV   : 7.09469E-02    ( -0.0325331   6.79465 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.43 using 59 PHA bins.
# Reduced chi-squared =         0.9533 for     55 degrees of freedom 
# Null hypothesis probability =   5.733269e-01
 
Photon flux (15-150 keV)    in 0.14 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]    : 21.5799  (-4.14624  5.38602)
R^2/D10^2   : 0.191878  (-0.094204   0.181462)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.63 using 59 PHA bins.
# Reduced chi-squared =          1.134 for     57 degrees of freedom 
# Null hypothesis probability =   2.275182e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.335e-09   6.552e-10
25- 50  1.221e-08   3.299e-09
50-150  4.245e-08   1.188e-08
15-150  5.699e-08   1.197e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-38.155      -200)
Norm        : 20.0650       (-2.87215     2.87215)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.03 using 59 PHA bins.
# Reduced chi-squared =          1.123 for     57 degrees of freedom 
# Null hypothesis probability =   2.435143e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.037e-09   4.027e-09
25- 50  1.354e-08   7.658e-09
50-150  2.969e-08   1.642e-08
15-150  5.026e-08   2.813e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.61025        (-3.28463      3.96986)
R1^2/D10^2  : 3.00263        (-2.14855      18.931)
kT2 [keV]   : 35.2713        (-10.7205      35.7388)
R2^2/D10^2  : 3.69544E-02    (-0.0310378   0.0791953)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.62 using 59 PHA bins.
# Reduced chi-squared =         0.9385 for     55 degrees of freedom 
# Null hypothesis probability =   6.047216e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.138e-09   2.946e-09
25- 50  1.272e-08   6.649e-09
50-150  4.968e-08   2.768e-08
15-150  6.754e-08   3.493e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.448 sec. to    0.552 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00864     ( -0.355243   0.335193 )
Norm@50keV  : 7.87568E-03    ( -0.00158049   0.0015654 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.38 using 59 PHA bins.
# Reduced chi-squared =          1.200 for     57 degrees of freedom 
# Null hypothesis probability =   1.436481e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.907235 ( -0.184585  0.186107 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.49277e-08 ( -1.76383e-08  1.77567e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.448 sec. to    0.552 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.292343     ( -1.77835   0.929423 )
Epeak [keV] : 144.591      ( -144.737 -144.737 )
Norm@50keV  : 1.56382E-02    ( -0.00897959   0.0540346 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.45 using 59 PHA bins.
# Reduced chi-squared =          1.204 for     56 degrees of freedom 
# Null hypothesis probability =   1.405678e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.875981 ( -0.194075  0.194109 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.28776e-08 ( -1.82517e-08  1.83164e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.448 sec. to    0.552 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.337842   ( -0.583117   1.89082 )
beta        : -10.0000    ( 10   10 )
Epeak [keV] : 148.284      ( -68.1893 192.203 )
Norm@50keV   : 1.51663E-02    ( -0.00846927   0.0545471 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.45 using 59 PHA bins.
# Reduced chi-squared =          1.226 for     55 degrees of freedom 
# Null hypothesis probability =   1.209162e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.883397 ( 6.1166  -0.195167 ) 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]    : 24.0989  (-5.44813  7.80898)
R^2/D10^2   : 2.46196E-02  (-0.0141661   0.0307318)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.72 using 59 PHA bins.
# Reduced chi-squared =          1.223 for     57 degrees of freedom 
# Null hypothesis probability =   1.201666e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.532e-09   1.031e-09
25- 50  1.409e-08   5.882e-09
50-150  6.095e-08   2.466e-08
15-150  7.757e-08   2.976e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-56.5317      -200)
Norm        : 3.75960       (-0.769299     0.769299)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          75.16 using 59 PHA bins.
# Reduced chi-squared =          1.319 for     57 degrees of freedom 
# Null hypothesis probability =   5.380511e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.361e-09   5.485e-09
25- 50  1.801e-08   1.064e-08
50-150  3.949e-08   2.295e-08
15-150  6.686e-08   3.868e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.79879        (-5.33734      9.78266)
R1^2/D10^2  : 0.593687        (-0.574715      1920.68)
kT2 [keV]   : 29.7786        (-8.58823      24.1157)
R2^2/D10^2  : 1.16362E-02    (-0.00993305   0.0187128)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.34 using 59 PHA bins.
# Reduced chi-squared =          1.206 for     55 degrees of freedom 
# Null hypothesis probability =   1.405885e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.895e-09   3.394e-09
25- 50  1.550e-08   7.855e-09
50-150  6.347e-08   3.647e-08
15-150  8.486e-08   4.430e-08
Plot creation:
Thu Jun  2 13:02:53 EDT 2016