batgrbproduct Analysis for Trigger=540964

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Dec 10 09:42:45 EST 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger540964/GCN5_download_cron
======================================================================

  Trigger: 00540964      Segment: 000

  BAT Trigger Time: 376783161.344   [s; MET]
      Trigger Stop: 376783162.368   [s; MET]
               UTC: 2012-12-09T21:59:11.377440    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 326.800843695798   Dec: -8.24449430194564  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.49
     Image Trigger?:     NO
     Rate S/N Ratio:     14.247806848775  [ if not an image trigger ]
     Image S/N Ratio:    7.49

  Flight Position:   [ source = BAT ]
    RA: 326.800843695798   Dec: -8.24449430194564  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 326.800052748399   Dec: -8.23217534948005  [deg; J2000]  
        { 21h 47m 12.0s , -08d 13' 55.8" }
         +/- 1.73623545890979 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.919630800654299 [arcmin] (formal 1-sigma fit error)
    SNR: 13.8299416968907
 
  Angular difference between Flight and Ground position is 0.740628 arcmin
 
  Partial Coding Fraction: 0.609375    [ including projection effects ]

  Duration
     T90: 42.7359999418259 +/- 2.04418786715703
        Measured from: -0.0199998617172241
                   to: 42.7160000801086     [s; relative to TRIGTIME]
     T50: 13.4319999814034 +/- 1.60428423201527
        Measured from: 14.7640001177788
                   to: 28.1960000991821     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 27.9079999923706     
                   to: 28.9079999923706     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.1599999666214     
                   to: 44.2840000391006     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.057314   1.618835   1.309819   0.346062
           0.055818   0.058388   0.052653   0.046081 [error]
 Peak      0.064334   0.148023   0.163218   0.064009
           0.009142   0.010704   0.010527   0.008751 [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 3.56e-07 6.84e-07 1.02e-06 3.26e-06 2.87e-06 5.32e-06   erg/cm2
              Error 2.80e-08 3.15e-08 5.21e-08 3.77e-07 1.28e-07 4.08e-07   erg/cm2
Peak flux Power-law 6.86e-01 9.92e-01 1.07e+00 2.14e+00 3.41e+00 4.89e+00   ph/cm2/s
              Error 1.08e-01 9.52e-02 8.10e-02 3.56e-01 2.55e-01 3.98e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.38e-07 6.96e-07 1.04e-06 2.35e-06 4.42e-06 0.00e+00   erg/cm2
              Error 3.47e-08 3.52e-08 5.78e-08 9.29e-07 9.34e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 6.39e-01 1.01e+00 1.10e+00 1.65e+00 3.38e+00 4.40e+00   ph/cm2/s
              Error 1.18e-01 1.01e-01 1.04e-01 7.01e-01 2.60e-01 7.38e-01   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.426    0.075    -      -           6.43e-03 2.63e-04   37.280 57
CPL   1.193    0.285     184.6  -54.5      8.29e-03 2.59e-03   35.360 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.893    0.128    -      -           2.97e-02 2.21e-03   66.410 57
CPL   0.634    0.424     309.4    0.0      3.86e-02 1.82e-02   65.560 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: 43.072000 sec.
T50 in the 50-300 keV band: 11.264000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   46.444   -2.160   44.284
T90    42.736   -0.020   42.716
T50    13.432   14.764   28.196
Peak    1.000   27.908   28.908

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  326.8001  -8.2322 0.0139   33.2  166.0       0.9569    13.8  TRIG_00540964       
------------------------------------------
 
Foreground time interval of the image:
 -2.160  13.857 (delta_t =  16.017 [sec])
Background time interval of the image:
-60.344  -2.160 (delta_t =  58.184 [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   -2.160 sec. to   44.284 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.42638     ( -0.0752909   0.0752668 )
Norm@50keV  : 6.42566E-03    ( -0.000263489   0.00026338 )
------------------------------------------------------------
# Chi-Squared =          37.28 using 59 PHA bins.
# Reduced chi-squared =         0.6540 for     57 degrees of freedom 
# Null hypothesis probability =   9.799542e-01
 
Photon flux (15-150 keV)    in 46.44 sec: 0.787340 ( -0.0341806  0.0342568 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.86831e-06 ( -1.27564e-07  1.27946e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.160 sec. to   44.284 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.19273     ( -0.307071   0.262857 )
Epeak [keV] : 184.551      ( -75.6347 -184.551 )
Norm@50keV  : 8.29079E-03    ( -0.00198832   0.00319082 )
------------------------------------------------------------
# Chi-Squared =          35.36 using 59 PHA bins.
# Reduced chi-squared =         0.6315 for     56 degrees of freedom 
# Null hypothesis probability =   9.858959e-01
 
Photon flux (15-150 keV)    in 46.44 sec: 0.776248 ( -0.036631  0.03668 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.41671e-06 ( -7.58296e-07  1.11067e-06 ) ergs/cm2
 
Band function
Time interval is from   -2.160 sec. to   44.284 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.887116   ( 0.886574   0.886574 )
beta        : -1.52224    ( 1.52248   0.136616 )
Epeak [keV] : 84.0856      ( -84.0006 -84.0006 )
Norm@50keV   : 1.28872E-02    ( -0.00659834   0 )
------------------------------------------------------------
# Chi-Squared =          35.14 using 59 PHA bins.
# Reduced chi-squared =         0.6389 for     55 degrees of freedom 
# Null hypothesis probability =   9.830324e-01
 
Photon flux (15-150 keV)    in 46.44 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]    : 16.7253  (  )
R^2/D10^2   : 6.08506E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         154.36 using 59 PHA bins.
# Reduced chi-squared =         2.7080 for     57 degrees of freedom 
# Null hypothesis probability =   6.549141e-11
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.617e-07   1.331e-08
25- 50  7.061e-07   3.947e-08
50-150  1.403e-06   1.087e-07
15-150  2.271e-06   1.052e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.992       (      )
Norm        : 3.26003       (-3.26003     -3.26003)
------------------------------------------------------------
# Chi-Squared =          45.38 using 59 PHA bins.
# Reduced chi-squared =         0.7961 for     57 degrees of freedom 
# Null hypothesis probability =   8.662858e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.771e-07   1.936e-07
25- 50  7.253e-07   3.720e-07
50-150  1.591e-06   8.143e-07
15-150  2.693e-06   1.374e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.65791        (-1.19492      1.3117)
R1^2/D10^2  : 0.557891        (-0.218526      0.427878)
kT2 [keV]   : 28.8698        (-4.12298      6.48136)
R2^2/D10^2  : 7.54360E-03    (-0.00377471   0.00563602)
------------------------------------------------------------
# Chi-Squared =          37.99 using 59 PHA bins.
# Reduced chi-squared =         0.6908 for     55 degrees of freedom 
# Null hypothesis probability =   9.609626e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.122e-07   5.292e-08
25- 50  7.138e-07   7.779e-08
50-150  1.792e-06   3.290e-07
15-150  2.818e-06   3.706e-07

Peak spectrum fit

Power-law model
Time interval is from   27.908 sec. to   28.908 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.893237     ( -0.129338   0.125764 )
Norm@50keV  : 2.96963E-02    ( -0.00222019   0.00220805 )
------------------------------------------------------------
# Chi-Squared =          66.41 using 59 PHA bins.
# Reduced chi-squared =          1.165 for     57 degrees of freedom 
# Null hypothesis probability =   1.844042e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.40832 ( -0.254471  0.254863 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.34153e-07 ( -2.58981e-08  2.59753e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   27.908 sec. to   28.908 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.634139     ( -0.531463   0.316824 )
Epeak [keV] : 309.387      ( -309.387 -309.387 )
Norm@50keV  : 3.85828E-02    ( -0.0104821   0.0259829 )
------------------------------------------------------------
# Chi-Squared =          65.56 using 59 PHA bins.
# Reduced chi-squared =          1.171 for     56 degrees of freedom 
# Null hypothesis probability =   1.790565e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.37857 ( -0.26022  0.26043 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.01776e-07 ( -2.1951e-07  3.03274e-07 ) ergs/cm2
 
Band function
Time interval is from   27.908 sec. to   28.908 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99999   ( -130526   -130526 )
beta        : -0.956660    ( -0.199516   0.156442 )
Epeak [keV] : 29.2864      ( -29.2446 9.85514 )
Norm@50keV   : 746.087    ( -752.647   3.74074e+06 )
------------------------------------------------------------
# Chi-Squared =          64.48 using 59 PHA bins.
# Reduced chi-squared =          1.172 for     55 degrees of freedom 
# Null hypothesis probability =   1.789711e-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]    : 23.7451  (-2.3598  2.78231)
R^2/D10^2   : 9.89542E-02  (-0.0285128   0.0380894)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          92.72 using 59 PHA bins.
# Reduced chi-squared =          1.627 for     57 degrees of freedom 
# Null hypothesis probability =   1.951412e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.953e-09   1.506e-09
25- 50  5.496e-08   6.225e-09
50-150  2.311e-07   2.560e-08
15-150  2.960e-07   2.670e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 13.6552       (     )
------------------------------------------------------------
# Chi-Squared =         138.20 using 59 PHA bins.
# Reduced chi-squared =         2.4245 for     57 degrees of freedom 
# Null hypothesis probability =   1.076332e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.400e-08   1.790e-08
25- 50  6.541e-08   3.442e-08
50-150  1.435e-07   7.525e-08
15-150  2.429e-07   1.284e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.7044        (-2.9196      3.55922)
R1^2/D10^2  : 0.654636        (-0.337138      0.913895)
kT2 [keV]   : 45.9914        (-13.5374      61.8388)
R2^2/D10^2  : 1.15842E-02    (-0.00988598   0.013295)
------------------------------------------------------------
# Chi-Squared =          63.58 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     55 degrees of freedom 
# Null hypothesis probability =   1.999015e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.843e-08   7.735e-09
25- 50  6.272e-08   2.486e-08
50-150  2.537e-07   1.163e-07
15-150  3.348e-07   1.411e-07
Plot creation:
Mon Dec 10 09:52:23 EST 2012