batgrbproduct Analysis for Trigger=609736

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Aug 17 20:19:50 EDT 2014
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger609736/GCN5_download_cron
======================================================================

  Trigger: 00609736      Segment: 000

  BAT Trigger Time: 429951733.76   [s; MET]
      Trigger Stop: 429951734.784   [s; MET]
               UTC: 2014-08-17T07:02:01.353900    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 127.255706670156   Dec: 58.1893395054857  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    21.88
     Image Trigger?:     NO
     Rate S/N Ratio:     88.3345911860127  [ if not an image trigger ]
     Image S/N Ratio:    21.88

  Flight Position:   [ source = BAT ]
    RA: 127.255706670156   Dec: 58.1893395054857  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 127.243638449286   Dec: 58.1908853669834  [deg; J2000]  
        { 08h 28m 58.5s , +58d 11' 27.2" }
         +/- 0.711577096413892 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.200924239440063 [arcmin] (formal 1-sigma fit error)
    SNR: 49.457238606241
 
  Angular difference between Flight and Ground position is 0.392780 arcmin
 
  Partial Coding Fraction: 0.765625    [ including projection effects ]

  Duration
     T90: 243.912000000477 +/- 12.4987079554302
        Measured from: -8.06799989938736
                   to: 235.844000101089     [s; relative to TRIGTIME]
     T50: 213.367999970913 +/- 2.28240225459174
        Measured from: 0.668000102043152
                   to: 214.036000072956     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.64399999380112     
                   to: 3.64399999380112     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -21.2599999904633     
                   to: 270.272000014782     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.909815   2.564266   2.039125   0.493309
           0.087611   0.091266   0.080270   0.070812 [error]
 Peak      0.147630   0.304837   0.333128   0.089470
           0.008211   0.010123   0.010433   0.007373 [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 6.06e-07 1.12e-06 1.61e-06 4.85e-06 4.58e-06 8.19e-06   erg/cm2
              Error 4.73e-08 5.05e-08 8.22e-08 5.65e-07 1.99e-07 6.13e-07   erg/cm2
Peak flux Power-law 1.65e+00 2.19e+00 2.13e+00 3.70e+00 7.18e+00 9.67e+00   ph/cm2/s
              Error 1.18e-01 9.67e-02 8.28e-02 3.04e-01 2.65e-01 3.74e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.05e-07 1.12e-06 1.61e-06 4.48e-06 4.58e-06 7.82e-06   erg/cm2
              Error 4.39e-08 5.23e-08 8.59e-08 8.40e-07 2.04e-07 9.91e-07   erg/cm2
Peak flux Cutoff-PL 1.38e+00 2.26e+00 2.31e+00 2.09e+00 7.01e+00 8.04e+00   ph/cm2/s
              Error 1.50e-01 1.07e-01 1.09e-01 4.43e-01 2.72e-01 5.17e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.44e+00 2.25e+00 2.27e+00 2.35e+00 7.07e+00 8.31e+00   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    1.484    0.076    -      -           1.65e-03 6.63e-05   52.990 57
CPL   1.443    0.182     712.7    0.0      1.73e-03 3.28e-04   53.050 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.039    0.060    -      -           6.22e-02 2.24e-03   64.990 57
CPL   0.378    0.269     143.2   40.1      1.21e-01 3.26e-02   44.690 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: 246.016000 sec.
T50 in the 50-300 keV band: 209.920000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  291.532  -21.260  270.272
T90   243.912   -8.068  235.844
T50   213.368    0.668  214.036
Peak    1.000    2.644    3.644

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  127.2436 +58.1909 0.0039   31.1  -27.4       3.9297    49.5  TRIG_00609736       
------------------------------------------
 
Foreground time interval of the image:
-21.260  12.141 (delta_t =  33.401 [sec])
Background time interval of the image:
-239.760 -21.260 (delta_t = 218.500 [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  -21.260 sec. to  270.272 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48444     ( -0.0760148   0.0759707 )
Norm@50keV  : 1.65105E-03    ( -6.63711e-05   6.63193e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.99 using 59 PHA bins.
# Reduced chi-squared =         0.9297 for     57 degrees of freedom 
# Null hypothesis probability =   6.261017e-01
 
Photon flux (15-150 keV)    in 291.5 sec: 0.205265 ( -0.00880888  0.00884402 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.57751e-06 ( -1.98564e-07  1.99454e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -21.260 sec. to  270.272 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44272     ( -0.291783   0.0728329 )
Epeak [keV] : 712.741      ( -9999.16 -9999.16 )
Norm@50keV  : 1.72812E-03    ( -6.66032e-05   0.000589915 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.05 using 59 PHA bins.
# Reduced chi-squared =         0.9473 for     56 degrees of freedom 
# Null hypothesis probability =   5.871917e-01
 
Photon flux (15-150 keV)    in 291.5 sec: 0.205187 ( -0.008599  0.008756 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.57725e-06 ( -2.08772e-07  1.98395e-07 ) ergs/cm2
 
Band function
Time interval is from  -21.260 sec. to  270.272 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.09003   ( 1.08878   1.08878 )
beta        : -1.48663    ( 1.48663   0.0778189 )
Epeak [keV] : 49.9067      ( -49.5596 -49.5596 )
Norm@50keV   : 3.41656E-03    ( -0.00186703   0.0767348 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.97 using 59 PHA bins.
# Reduced chi-squared =         0.9631 for     55 degrees of freedom 
# Null hypothesis probability =   5.525021e-01
 
Photon flux (15-150 keV)    in 291.5 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]    : 16.4960  (  )
R^2/D10^2   : 1.61349E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         207.42 using 59 PHA bins.
# Reduced chi-squared =         3.6389 for     57 degrees of freedom 
# Null hypothesis probability =   5.857542e-19
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.627e-07   2.086e-08
25- 50  1.134e-06   6.602e-08
50-150  2.182e-06   1.676e-07
15-150  3.579e-06   1.734e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 0.837250       (-0.033963     0.0339661)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.10 using 59 PHA bins.
# Reduced chi-squared =          1.054 for     57 degrees of freedom 
# Null hypothesis probability =   3.641434e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.109e-07   2.594e-08
25- 50  1.175e-06   5.320e-08
50-150  2.577e-06   1.131e-07
15-150  4.363e-06   2.026e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.79028        (-0.982189      1.10346)
R1^2/D10^2  : 0.235301        (-0.0957281      0.184415)
kT2 [keV]   : 27.8419        (-3.48595      5.07167)
R2^2/D10^2  : 2.21804E-03    (-0.000967809   0.00135462)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.02 using 59 PHA bins.
# Reduced chi-squared =          1.055 for     55 degrees of freedom 
# Null hypothesis probability =   3.645171e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.737e-07   8.118e-08
25- 50  1.124e-06   1.138e-07
50-150  2.845e-06   3.666e-07
15-150  4.543e-06   4.853e-07

Peak spectrum fit

Power-law model
Time interval is from    2.644 sec. to    3.644 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.03881     ( -0.06046   0.0601337 )
Norm@50keV  : 6.22375E-02    ( -0.00224175   0.0022402 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.99 using 59 PHA bins.
# Reduced chi-squared =          1.140 for     57 degrees of freedom 
# Null hypothesis probability =   2.184545e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.18241 ( -0.264502  0.264734 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.63989e-07 ( -2.57366e-08  2.57686e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    2.644 sec. to    3.644 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.378143     ( -0.277624   0.261226 )
Epeak [keV] : 143.241      ( -25.8758 54.2772 )
Norm@50keV  : 0.121435    ( -0.0274657   0.0377513 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.69 using 59 PHA bins.
# Reduced chi-squared =         0.7980 for     56 degrees of freedom 
# Null hypothesis probability =   8.614424e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.01377 ( -0.27169  0.27192 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.49082e-07 ( -2.7169e-08  2.703e-08 ) ergs/cm2
 
Band function
Time interval is from    2.644 sec. to    3.644 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.378098   ( -0.201881   0.328145 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 143.219      ( -18.6796 54.15 )
Norm@50keV   : 0.121441    ( -0.0275079   0.037764 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.69 using 59 PHA bins.
# Reduced chi-squared =         0.8125 for     55 degrees of freedom 
# Null hypothesis probability =   8.384186e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.06576 (    ) 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]    : 21.5394  (  )
R^2/D10^2   : 0.279789  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         123.87 using 59 PHA bins.
# Reduced chi-squared =         2.1732 for     57 degrees of freedom 
# Null hypothesis probability =   7.366019e-07
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.425e-08   1.680e-09
25- 50  1.266e-07   6.350e-09
50-150  4.386e-07   2.520e-08
15-150  5.895e-07   2.790e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 29.3311       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         249.10 using 59 PHA bins.
# Reduced chi-squared =         4.3702 for     57 degrees of freedom 
# Null hypothesis probability =   7.570443e-26
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.304e-08   2.945e-09
25- 50  1.405e-07   5.700e-09
50-150  3.081e-07   1.195e-08
15-150  5.217e-07   1.995e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.27781        (-1.88099      2.15602)
R1^2/D10^2  : 1.81970        (-0.73911      1.62744)
kT2 [keV]   : 31.4981        (-3.9648      6.7782)
R2^2/D10^2  : 6.88364E-02    (-0.0341091   0.0429022)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.93 using 59 PHA bins.
# Reduced chi-squared =         0.8169 for     55 degrees of freedom 
# Null hypothesis probability =   8.318127e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.132e-08   6.930e-09
25- 50  1.341e-07   1.715e-08
50-150  4.764e-07   6.590e-08
15-150  6.518e-07   8.230e-08
Plot creation:
Sun Aug 17 20:23:45 EDT 2014