batgrbproduct Analysis for Trigger=660671

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Oct 22 07:34:50 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger660671/GCN5_download_cron
======================================================================

  Trigger: 00660671      Segment: 000

  BAT Trigger Time: 467083767.872   [s; MET]
      Trigger Stop: 467083768.896   [s; MET]
               UTC: 2015-10-21T01:29:12.571160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 337.611486078815   Dec: -33.1989135771919  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.89
     Image Trigger?:     NO
     Rate S/N Ratio:     35.028559776274  [ if not an image trigger ]
     Image S/N Ratio:    6.89

  Flight Position:   [ source = BAT ]
    RA: 337.611486078815   Dec: -33.1989135771919  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 337.64722823962   Dec: -33.189361845312  [deg; J2000]  
        { 22h 30m 35.3s , -33d 11' 21.7" }
         +/- 0.957435471806299 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.297263540177833 [arcmin] (formal 1-sigma fit error)
    SNR: 32.3671745017648
 
  Angular difference between Flight and Ground position is 1.883876 arcmin
 
  Partial Coding Fraction: 0.1054688    [ including projection effects ]

  Duration
     T90: 110.243999958038 +/- 3.64878062317384
        Measured from: -15.2639998793602
                   to: 94.9800000786781     [s; relative to TRIGTIME]
     T50: 35.5039999485016 +/- 2.49856280825218
        Measured from: 0.556000113487244
                   to: 36.0600000619888     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.131999969482422     
                   to: 0.868000030517578     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -21.6279999613762     
                   to: 127.424000024796     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    10.609886  14.979416  11.878519   3.659418
           0.176595   0.198113   0.188011   0.147730 [error]
 Peak      0.293783   0.355495   0.372549   0.129422
           0.026126   0.031316   0.032659   0.024516 [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 4.01e-06 7.06e-06 9.52e-06 2.64e-05 2.76e-05 4.70e-05   erg/cm2
              Error 1.65e-07 1.66e-07 2.11e-07 1.38e-06 5.30e-07 1.45e-06   erg/cm2
Peak flux Power-law 3.04e+00 3.20e+00 2.38e+00 2.87e+00 9.73e+00 1.15e+01   ph/cm2/s
              Error 4.66e-01 2.94e-01 2.67e-01 6.75e-01 8.40e-01 1.02e+00   ph/cm2/s
 
Fluence   Cutoff-PL 3.94e-06 7.07e-06 9.53e-06 2.46e-05 2.76e-05 4.52e-05   erg/cm2
              Error 2.08e-07 1.61e-07 1.65e-07 2.26e-06 5.26e-07 1.85e-06   erg/cm2
Peak flux Cutoff-PL 3.08e+00 3.21e+00 2.37e+00 2.79e+00 9.74e+00 1.14e+01   ph/cm2/s
              Error 4.59e-01 2.92e-01 2.69e-01 7.98e-01 8.40e-01 1.05e+00   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   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    1.569    0.037    -      -           1.99e-02 3.79e-04   35.030 57
CPL   1.567    0.100    9998.8    0.0      2.00e-02 1.50e-03   35.040 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.425    0.156    -      -           7.94e-02 6.97e-03   48.170 57
CPL   1.423    0.212    9999.4    0.0      7.97e-02 5.41e-02   48.200 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: 102.336000 sec.
T50 in the 50-300 keV band: 29.888000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  149.052  -21.628  127.424
T90   110.244  -15.264   94.980
T50    35.504    0.556   36.060
Peak    1.000   -0.132    0.868

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  337.6472 -33.1894 0.0060   43.6   37.6      21.7187    32.4  TRIG_00660671       
------------------------------------------
 
Foreground time interval of the image:
-21.628  14.629 (delta_t =  36.257 [sec])
Background time interval of the image:
-239.872 -55.286 (delta_t = 184.586 [sec])
-53.872 -21.628 (delta_t =  32.244 [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
Multiple GTIs in the spectrum
tstart tstop
-21.628000 36.658000
38.128000 127.424000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56910     ( -0.0367903   0.0367934 )
Norm@50keV  : 1.99289E-02    ( -0.000379421   0.000379296 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.03 using 59 PHA bins.
# Reduced chi-squared =         0.6146 for     57 degrees of freedom 
# Null hypothesis probability =   9.903413e-01
 
Photon flux (15-150 keV)    in 147.6 sec: 2.53705 ( -0.0579321  0.0581848 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.76185e-05 ( -5.2963e-07  5.29835e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-21.628000 36.658000
38.128000 127.424000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56658     ( -0.108631   0.0921146 )
Epeak [keV] : 9998.79      ( -9998.8 -9998.8 )
Norm@50keV  : 1.99803E-02    ( -0.000378518   0.00261561 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.04 using 59 PHA bins.
# Reduced chi-squared =         0.6258 for     56 degrees of freedom 
# Null hypothesis probability =   9.873177e-01
 
Photon flux (15-150 keV)    in 147.6 sec: 2.53628 ( -0.0591  0.05636 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.76216e-05 ( -5.25751e-07  5.25308e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-21.628000 36.658000
38.128000 127.424000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.893537   ( 1.05458   5.7005 )
beta        : -1.58155    ( -3.03835   0.042824 )
Epeak [keV] : 48.1902      ( -48.1206 116.436 )
Norm@50keV   : 5.66404E-02    ( -0.0570696   2.25858e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.04 using 59 PHA bins.
# Reduced chi-squared =         0.6188 for     55 degrees of freedom 
# Null hypothesis probability =   9.882318e-01
 
Photon flux (15-150 keV)    in 147.6 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]    : 17.5159  (  )
R^2/D10^2   : 0.155368  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         717.35 using 59 PHA bins.
# Reduced chi-squared =         12.585 for     57 degrees of freedom 
# Null hypothesis probability =  5.751037e-115
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.421e-06   5.343e-08
25- 50  6.435e-06   1.911e-07
50-150  1.423e-05   4.207e-07
15-150  2.208e-05   4.945e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-7.02812      -200)
Norm        : 10.2472       (-0.194315     0.194315)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.84 using 59 PHA bins.
# Reduced chi-squared =         0.9620 for     57 degrees of freedom 
# Null hypothesis probability =   5.567132e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.767e-06   8.339e-08
25- 50  7.247e-06   1.705e-07
50-150  1.589e-05   3.690e-07
15-150  2.691e-05   6.494e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.99911        (-0.528902      0.553223)
R1^2/D10^2  : 1.71714        (-0.355297      0.474754)
kT2 [keV]   : 31.6896        (-2.30121      2.8334)
R2^2/D10^2  : 1.56583E-02    (-0.00400549   0.00480935)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.55 using 59 PHA bins.
# Reduced chi-squared =         0.9010 for     55 degrees of freedom 
# Null hypothesis probability =   6.819842e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.283e-06   2.074e-07
25- 50  7.343e-06   2.812e-07
50-150  1.667e-05   7.528e-07
15-150  2.730e-05   9.077e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.132 sec. to    0.868 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.42506     ( -0.155004   0.157826 )
Norm@50keV  : 7.94457E-02    ( -0.00698797   0.00694293 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.17 using 59 PHA bins.
# Reduced chi-squared =         0.8451 for     57 degrees of freedom 
# Null hypothesis probability =   7.911555e-01
 
Photon flux (15-150 keV)    in 1 sec: 9.73147 ( -0.839351  0.840355 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.63833e-07 ( -7.57294e-08  7.62077e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.132 sec. to    0.868 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.42305     ( -0.265815   0.158037 )
Epeak [keV] : 9999.35      ( -9999.36 -9999.36 )
Norm@50keV  : 7.97043E-02    ( -0.0797053   0.0284194 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.20 using 59 PHA bins.
# Reduced chi-squared =         0.8606 for     56 degrees of freedom 
# Null hypothesis probability =   7.614459e-01
 
Photon flux (15-150 keV)    in 1 sec: 9.74296 ( -0.85127  0.82824 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.58445e-07 ( -7.0685e-08  8.0572e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.132 sec. to    0.868 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.22247   ( 1.22247   1.22247 )
beta        : -1.42501    ( -0.157932   0.1547 )
Epeak [keV] : 15.6146      ( -15.6105 -15.6105 )
Norm@50keV   : 0.161709    ( -0.0891292   74059.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.17 using 59 PHA bins.
# Reduced chi-squared =         0.8759 for     55 degrees of freedom 
# Null hypothesis probability =   7.309680e-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]    : 17.1336  (-2.37968  2.70188)
R^2/D10^2   : 0.692758  (-0.263099   0.445544)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         105.31 using 59 PHA bins.
# Reduced chi-squared =         1.8475 for     57 degrees of freedom 
# Null hypothesis probability =   1.042589e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.133e-08   7.115e-09
25- 50  1.840e-07   2.385e-08
50-150  3.866e-07   6.430e-08
15-150  6.120e-07   7.320e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-36.3832      -200)
Norm        : 39.7840       (-3.40254     3.40254)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.41 using 59 PHA bins.
# Reduced chi-squared =         0.9370 for     57 degrees of freedom 
# Null hypothesis probability =   6.105212e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.905e-08   1.037e-08
25- 50  1.905e-07   2.680e-08
50-150  4.179e-07   2.186e-07
15-150  7.075e-07   1.980e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.01600        (-1.11867      1.35836)
R1^2/D10^2  : 18.9731        (-10.1349      24.2954)
kT2 [keV]   : 31.3650        (-5.95551      9.89354)
R2^2/D10^2  : 8.03701E-02    (-0.0456409   0.0794042)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.95 using 59 PHA bins.
# Reduced chi-squared =         0.7991 for     55 degrees of freedom 
# Null hypothesis probability =   8.574318e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.036e-07   3.501e-08
25- 50  1.674e-07   4.178e-08
50-150  5.238e-07   1.595e-07
15-150  7.948e-07   2.334e-07
Plot creation:
Thu Oct 22 07:40:06 EDT 2015