batgrbproduct Analysis for Trigger=665268

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Nov 28 04:03:36 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger665268/GCN5_download_cron
======================================================================

  Trigger: 00665268      Segment: 000

  BAT Trigger Time: 470308145.28   [s; MET]
      Trigger Stop: 470308145.536   [s; MET]
               UTC: 2015-11-27T09:08:49.807240    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 19.7778363516866   Dec: -82.773849221241  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.86
     Image Trigger?:     NO
     Rate S/N Ratio:     12.5299640861417  [ if not an image trigger ]
     Image S/N Ratio:    6.86

  Flight Position:   [ source = BAT ]
    RA: 19.7778363516866   Dec: -82.773849221241  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 19.6618507665897   Dec: -82.7612211712065  [deg; J2000]  
        { 01h 18m 38.8s , -82d 45' 40.4" }
         +/- 2.79524268928748 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.34911191178279 [arcmin] (formal 1-sigma fit error)
    SNR: 7.00448497674242
 
  Angular difference between Flight and Ground position is 1.158306 arcmin
 
  Partial Coding Fraction: 0.9609375    [ including projection effects ]

  Duration
     T90: 0.187999904155731 +/- 0.042520585314364
        Measured from: 0.0240001678466797
                   to: 0.212000072002411     [s; relative to TRIGTIME]
     T50: 0.0959999561309814 +/- 0.042520585314364
        Measured from: 0.0760001540184021
                   to: 0.172000110149384     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.379999995231628     
                   to: 0.620000004768372     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.0160000324249268     
                   to: 0.220000028610229     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.006516   0.014940   0.016307   0.002626
           0.002753   0.003118   0.003043   0.002395 [error]
 Peak      0.006884   0.025712   0.015422   0.001150
           0.005878   0.006076   0.005503   0.004808 [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 2.37e-09 5.05e-09 8.43e-09 3.20e-08 2.32e-08 4.79e-08   erg/cm2
              Error 9.28e-10 1.32e-09 2.16e-09 1.63e-08 5.63e-09 1.79e-08   erg/cm2
Peak flux Power-law 8.80e-02 1.18e-01 1.16e-01 2.04e-01 3.88e-01 5.26e-01   ph/cm2/s
              Error 6.12e-02 5.12e-02 4.27e-02 1.75e-01 1.37e-01 1.97e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.78e-09 5.88e-09 1.02e-08 8.57e-09 2.31e-08 2.64e-08   erg/cm2
              Error 1.06e-09 1.68e-09 2.93e-09 1.46e-08 5.73e-09 1.39e-08   erg/cm2
Peak flux Cutoff-PL 8.65e-02 1.20e-01 1.17e-01 1.56e-01 3.87e-01 4.70e-01   ph/cm2/s
              Error 6.27e-02 5.04e-02 4.68e-02 1.72e-01 1.38e-01 2.30e-01   ph/cm2/s
 
Fluence        Band 1.79e-09 5.84e-09 1.01e-08 8.89e-09 2.32e-08 2.73e-08   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    1.261    0.333    -      -           1.14e-02 2.66e-03   47.180 57
CPL  -0.194    1.628      84.0  149.0      5.52e-02 1.66e-01   43.820 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.025    0.634    -      -           3.37e-03 1.17e-03   54.240 57
CPL   0.926    2.822     535.3    0.0      3.78e-03 5.78e+01   54.230 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.204    0.016    0.220
T90     0.188    0.024    0.212
T50     0.096    0.076    0.172
Peak    1.000   -0.380    0.620

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   19.6619 -82.7612 0.0274   20.0   -2.3       0.0405     7.0  TRIG_00665268       
------------------------------------------
 
Foreground time interval of the image:
  0.016   0.220 (delta_t =   0.204 [sec])
Background time interval of the image:
-203.879   0.016 (delta_t = 203.895 [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    0.016 sec. to    0.220 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26071     ( -0.339192   0.327437 )
Norm@50keV  : 1.13927E-02    ( -0.00265839   0.00265574 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.18 using 59 PHA bins.
# Reduced chi-squared =         0.8278 for     57 degrees of freedom 
# Null hypothesis probability =   8.198050e-01
 
Photon flux (15-150 keV)    in 0.204 sec: 1.34995 ( -0.326859  0.328197 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.31934e-08 ( -5.61916e-09  5.64237e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.016 sec. to    0.220 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.194323     ( -1.89453   1.36217 )
Epeak [keV] : 84.0179      ( -23.3448 274.661 )
Norm@50keV  : 5.52161E-02    ( -0.0552266   0.275807 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.82 using 59 PHA bins.
# Reduced chi-squared =         0.7825 for     56 degrees of freedom 
# Null hypothesis probability =   8.815409e-01
 
Photon flux (15-150 keV)    in 0.204 sec: 1.34563 ( -0.32749  0.32923 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.3114e-08 ( -5.71918e-09  5.73689e-09 ) ergs/cm2
 
Band function
Time interval is from    0.016 sec. to    0.220 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.200848   ( -1.51835   1.71444 )
beta        : -10.0000    ( 10   8.88178e-15 )
Epeak [keV] : 83.8696      ( -21.904 159.627 )
Norm@50keV   : 5.56025E-02    ( -0.0556016   0.274924 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.82 using 59 PHA bins.
# Reduced chi-squared =         0.7967 for     55 degrees of freedom 
# Null hypothesis probability =   8.607209e-01
 
Photon flux (15-150 keV)    in 0.204 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.3165e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 19.2469  (-4.17691  5.13631)
R^2/D10^2   : 7.84794E-02  (-0.0445172   0.10038)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.13 using 59 PHA bins.
# Reduced chi-squared =         0.7917 for     57 degrees of freedom 
# Null hypothesis probability =   8.721005e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.160e-09   5.247e-10
25- 50  5.631e-09   2.285e-09
50-150  1.537e-08   6.162e-09
15-150  2.216e-08   8.820e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-78.4203      -200)
Norm        : 5.75038       (-1.35348     1.35348)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.24 using 59 PHA bins.
# Reduced chi-squared =         0.8463 for     57 degrees of freedom 
# Null hypothesis probability =   7.890662e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.921e-09   1.777e-09
25- 50  5.619e-09   3.302e-09
50-150  1.232e-08   7.374e-09
15-150  2.087e-08   1.228e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 23.3852        (-10.6906      -23.2965)
R1^2/D10^2  : 3.37056E-02        (-0.0339817      0.0861086)
kT2 [keV]   : 7.74163        (-7.61211      -7.61211)
R2^2/D10^2  : 0.596626    (-0.621889   -0.621889)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.17 using 59 PHA bins.
# Reduced chi-squared =         0.7848 for     55 degrees of freedom 
# Null hypothesis probability =   8.762482e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.962e-09   1.183e-09
25- 50  5.825e-09   2.966e-09
50-150  1.561e-08   9.003e-09
15-150  2.340e-08   1.300e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.380 sec. to    0.620 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.02478     ( -0.690706   0.576801 )
Norm@50keV  : 3.36948E-03    ( -0.00117933   0.00115783 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.24 using 59 PHA bins.
# Reduced chi-squared =         0.9516 for     57 degrees of freedom 
# Null hypothesis probability =   5.793350e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.388379 ( -0.136349  0.137909 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.61245e-08 ( -1.30961e-08  1.34438e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.380 sec. to    0.620 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.926027     ( -6.27418   -0.629982 )
Epeak [keV] : 535.332      ( -468.214 -468.214 )
Norm@50keV  : 3.78363E-03    ( -0.00160809   115.66 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.23 using 59 PHA bins.
# Reduced chi-squared =         0.9684 for     56 degrees of freedom 
# Null hypothesis probability =   5.421384e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.386583 ( -0.136902  0.139301 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.52559e-08 ( -1.95082e-08  1.42551e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.380 sec. to    0.620 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.95614   ( -4.95614   -4.95614 )
beta        : -1.53464    ( -1.87874   0.87288 )
Epeak [keV] : 35.5077      ( -35.5077 17.657 )
Norm@50keV   : 37.0814    ( -12.0171   796558 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.97 using 59 PHA bins.
# Reduced chi-squared =         0.9450 for     55 degrees of freedom 
# Null hypothesis probability =   5.909453e-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]    : 15.1611  (-5.33667  17.8973)
R^2/D10^2   : 4.52152E-02  (-0.0446623   0.158849)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.79 using 59 PHA bins.
# Reduced chi-squared =         0.9788 for     57 degrees of freedom 
# Null hypothesis probability =   5.204402e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.172e-09   1.403e-09
25- 50  8.715e-09   5.400e-09
50-150  1.370e-08   9.695e-09
15-150  2.459e-08   1.580e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-113.195      -199.363)
Norm        : 1.60471       (-0.5687     0.568721)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.20 using 59 PHA bins.
# Reduced chi-squared =         0.9859 for     57 degrees of freedom 
# Null hypothesis probability =   5.052410e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.996e-09   2.509e-09
25- 50  7.687e-09   4.926e-09
50-150  1.686e-08   1.068e-08
15-150  2.854e-08   1.747e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.6002        (-3.80744      6.04744)
R1^2/D10^2  : 0.124891        (-0.104426      0.387037)
kT2 [keV]   : 199.198        (-199.29      -199.29)
R2^2/D10^2  : 7.26055E-05    (-5.13527e-05   0.0076244)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.79 using 59 PHA bins.
#Fit statistic : Chi-Squared =          51.54 using 59 PHA bins.
# Reduced chi-squared =          1.014 for     55 degrees of freedom 
# Reduced chi-squared =         0.9372 for     55 degrees of freedom 
# Null hypothesis probability =   4.448184e-01
# Null hypothesis probability =   6.074357e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00
Plot creation:
Sat Nov 28 04:08:45 EST 2015