batgrbproduct Analysis for Trigger=649916

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jul 23 07:38:26 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger649916/GCN5_download_cron
======================================================================

  Trigger: 00649916      Segment: 000

  BAT Trigger Time: 459251888   [s; MET]
      Trigger Stop: 459251952   [s; MET]
               UTC: 2015-07-22T09:57:53.112440    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 218.271508942397   Dec: -35.1965701114099  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.92
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.92

  Flight Position:   [ source = BAT ]
    RA: 218.271508942397   Dec: -35.1965701114099  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 218.297307634795   Dec: -35.1959408549076  [deg; J2000]  
        { 14h 33m 11.4s , -35d 11' 45.4" }
         +/- 2.8358600278728 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.26129253676311 [arcmin] (formal 1-sigma fit error)
    SNR: 6.8616067005444
 
  Angular difference between Flight and Ground position is 1.265498 arcmin
 
  Partial Coding Fraction: 0.9453125    [ including projection effects ]

  Duration
     T90: 67 +/- 12.5299640861417
        Measured from: -23.9999998807907
                   to: 43.0000001192093     [s; relative to TRIGTIME]
     T50: 38 +/- 17.2046505340853
        Measured from: -3.99999988079071
                   to: 34.0000001192093     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 15     
                   to: 16     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -26     
                   to: 48     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.385123   0.388015   0.262982   0.037141
           0.051545   0.048640   0.040464   0.033212 [error]
 Peak      0.014349   0.020389   0.007075   0.005540
           0.006075   0.005698   0.004836   0.003956 [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 1.11e-07 1.70e-07 1.96e-07 4.34e-07 6.06e-07 9.11e-07   erg/cm2
              Error 2.37e-08 2.24e-08 4.12e-08 1.94e-07 9.38e-08 2.29e-07   erg/cm2
Peak flux Power-law 1.76e-01 1.36e-01 7.10e-02 5.34e-02 4.08e-01 4.37e-01   ph/cm2/s
              Error 8.62e-02 4.56e-02 3.86e-02 6.54e-02 1.37e-01 1.48e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.10e-07 1.70e-07 1.97e-07 4.41e-07 6.07e-07 8.94e-07   erg/cm2
              Error 2.37e-08 2.24e-08 4.12e-08 2.31e-07 9.32e-08 2.70e-07   erg/cm2
Peak flux Cutoff-PL 1.64e-01 1.48e-01 6.95e-02 2.00e-02 3.97e-01 4.02e-01   ph/cm2/s
              Error 1.31e-01 6.79e-02 5.66e-02 6.35e-02 1.49e-01 1.68e-01   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    1.794    0.260    -      -           8.89e-04 1.34e-04   41.780 57
CPL   2.079    0.000      32.9    0.0      6.29e-04 0.00e+00   41.090 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.942    0.666    -      -           2.79e-03 1.17e-03   41.180 57
CPL   1.197    4.581      44.5   -7.2      7.57e-03 1.28e+02   41.020 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   74.000  -26.000   48.000
T90    67.000  -24.000   43.000
T50    38.000   -4.000   34.000
Peak    1.000   15.000   16.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  218.2973 -35.1959 0.0281   23.3  -24.6       0.7041     6.9  TRIG_00649916       
------------------------------------------
 
Foreground time interval of the image:
-26.000  48.000 (delta_t =  74.000 [sec])
Background time interval of the image:
-239.000 -26.000 (delta_t = 213.000 [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  -26.000 sec. to   48.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.79437     ( -0.25438   0.266238 )
Norm@50keV  : 8.88772E-04    ( -0.000135956   0.000131566 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.78 using 59 PHA bins.
# Reduced chi-squared =         0.7329 for     57 degrees of freedom 
# Null hypothesis probability =   9.348857e-01
 
Photon flux (15-150 keV)    in 74 sec: 0.122205 ( -0.0162527  0.0162957 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.056e-07 ( -9.29803e-08  9.47008e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -26.000 sec. to   48.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.07927     (     )
Epeak [keV] : 32.8864      (   )
Norm@50keV  : 6.28878E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.09 using 59 PHA bins.
# Reduced chi-squared =         0.7337 for     56 degrees of freedom 
# Null hypothesis probability =   9.323863e-01
 
Photon flux (15-150 keV)    in 74 sec: 0.122443 ( -0.0245725  0.016064 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.06622e-07 ( -9.39844e-08  9.24734e-08 ) ergs/cm2
 
Band function
Time interval is from  -26.000 sec. to   48.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.50298   ( 1.50298   1.50298 )
beta        : -1.79434    ( 1.79434   0.254368 )
Epeak [keV] : 12.0146      ( -12.0144 -12.0144 )
Norm@50keV   : 2.10542E-03    ( -0.00134191   0.022755 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.78 using 59 PHA bins.
# Reduced chi-squared =         0.7596 for     55 degrees of freedom 
# Null hypothesis probability =   9.055771e-01
 
Photon flux (15-150 keV)    in 74 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]    : 11.9302  (-2.27305  3.00013)
R^2/D10^2   : 2.82626E-02  (-0.0279878   0.0337297)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.44 using 59 PHA bins.
# Reduced chi-squared =          1.166 for     57 degrees of freedom 
# Null hypothesis probability =   1.836384e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.293e-08   1.800e-08
25- 50  1.967e-07   3.955e-08
50-150  1.677e-07   5.043e-08
15-150  4.273e-07   8.540e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 123.004       (-53.9668      -121.591)
Norm        : 0.505844       (-0.0813559     0.120265)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.11 using 59 PHA bins.
# Reduced chi-squared =         0.7738 for     57 degrees of freedom 
# Null hypothesis probability =   8.942123e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.740e-08   1.849e-08
25- 50  1.750e-07   5.247e-08
50-150  3.161e-07   1.784e-07
15-150  5.884e-07   3.085e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.03424        (-1.70166      2.27587)
R1^2/D10^2  : 0.567119        (-0.432701      1.39209)
kT2 [keV]   : 24.0435        (-7.10639      16.982)
R2^2/D10^2  : 1.89503E-03    (-0.00155147   0.00439685)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.19 using 59 PHA bins.
# Reduced chi-squared =         0.7672 for     55 degrees of freedom 
# Null hypothesis probability =   8.972819e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.193e-07   6.214e-08
25- 50  1.495e-07   6.435e-08
50-150  3.469e-07   2.000e-07
15-150  6.157e-07   2.925e-07

Peak spectrum fit

Power-law model
Time interval is from   15.000 sec. to   16.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.94207     ( -0.608283   0.722851 )
Norm@50keV  : 2.79050E-03    ( -0.00121628   0.00113031 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.18 using 59 PHA bins.
# Reduced chi-squared =         0.7224 for     57 degrees of freedom 
# Null hypothesis probability =   9.432508e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.407812 ( -0.136576  0.136673 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.56742e-08 ( -1.00542e-08  1.07128e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   15.000 sec. to   16.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.19688     ( -7.78452   1.37735 )
Epeak [keV] : 44.4513      ( -30.1224 -44.4753 )
Norm@50keV  : 7.57044E-03    ( -0.00752722   256.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.02 using 59 PHA bins.
# Reduced chi-squared =         0.7326 for     56 degrees of freedom 
# Null hypothesis probability =   9.333080e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.396607 ( -0.15364  0.143452 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.37444e-08 ( -1.06303e-08  1.22883e-08 ) ergs/cm2
 
Band function
Time interval is from   15.000 sec. to   16.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.11421   ( 1.2753   1.2753 )
beta        : -2.45364    ( 2.51456   2.42645 )
Epeak [keV] : 42.1738      ( -42.1599 -42.1599 )
Norm@50keV   : 8.68868E-03    ( -0.00869989   988509 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.90 using 59 PHA bins.
# Reduced chi-squared =         0.7437 for     55 degrees of freedom 
# Null hypothesis probability =   9.214611e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.39531e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.1530  (-2.98337  4.54038)
R^2/D10^2   : 0.183874  (-0.183876   0.510329)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.66 using 59 PHA bins.
# Reduced chi-squared =         0.7309 for     57 degrees of freedom 
# Null hypothesis probability =   9.365106e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.880e-09   2.418e-09
25- 50  9.854e-09   6.130e-09
50-150  5.373e-09   4.016e-09
15-150  1.911e-08   1.203e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 71.0763       (-43.9777      -71.0756)
Norm        : 1.99972       (-0.829278     1.63313)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.03 using 59 PHA bins.
# Reduced chi-squared =         0.7198 for     57 degrees of freedom 
# Null hypothesis probability =   9.452313e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.139e-09   3.333e-09
25- 50  8.209e-09   5.170e-09
50-150  1.066e-08   9.175e-09
15-150  2.401e-08   1.602e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.23184        (-1.63749      19.6129)
R1^2/D10^2  : 2.04169E+04        (      )
kT2 [keV]   : 10.9759        (-3.34564      -10.9681)
R2^2/D10^2  : 0.130113    (-0.130905   0.161678)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.21 using 59 PHA bins.
#Fit statistic : Chi-Squared =          40.11 using 59 PHA bins.
# Reduced chi-squared =         0.7311 for     55 degrees of freedom 
# Reduced chi-squared =         0.7294 for     55 degrees of freedom 
# Null hypothesis probability =   9.326904e-01
# Null hypothesis probability =   9.341172e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.625e-09   2.240e-09
25- 50  9.102e-09   5.700e-09
50-150  6.341e-09   4.444e-09
15-150  2.007e-08   1.176e-08
Plot creation:
Thu Jul 23 07:41:52 EDT 2015