batgrbproduct Analysis for Trigger=506902

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Nov  4 03:31:47 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger506902/GCN5_download_cron
======================================================================

  Trigger: 00506902      Segment: 000

  BAT Trigger Time: 342009321.024   [s; MET]
      Trigger Stop: 342009322.048   [s; MET]
               UTC: 2011-11-03T10:35:13.489780    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 327.121853512217   Dec: -10.5472597757318  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.23
     Image Trigger?:     NO
     Rate S/N Ratio:     37.5765884561119  [ if not an image trigger ]
     Image S/N Ratio:    12.23

  Flight Position:   [ source = BAT ]
    RA: 327.121853512217   Dec: -10.5472597757318  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 327.111059238043   Dec: -10.5317410617411  [deg; J2000]  
        { 21h 48m 26.7s , -10d 31' 54.3" }
         +/- 1.13749543752321 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.331627889914499 [arcmin] (formal 1-sigma fit error)
    SNR: 25.3040647046977
 
  Angular difference between Flight and Ground position is 1.128014 arcmin
 
  Partial Coding Fraction: 0.3164062    [ including projection effects ]

  Duration
     T90: 11.6199999451637 +/- 0.459999990463258
        Measured from: -0.0159998536109924
                   to: 11.6040000915527     [s; relative to TRIGTIME]
     T50: 7.07199996709824 +/- 2.1141391036802
        Measured from: 1.08800011873245
                   to: 8.16000008583069     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 6.04000002145767     
                   to: 7.04000002145767     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.416000008583069     
                   to: 12.1399999856949     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.461112   0.769318   0.658234   0.199839
           0.038863   0.041148   0.037392   0.031434 [error]
 Peak      0.067787   0.156709   0.130707   0.040031
           0.012076   0.014102   0.012415   0.010009 [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 1.48e-07 3.09e-07 5.02e-07 1.84e-06 1.39e-06 2.80e-06   erg/cm2
              Error 1.64e-08 2.05e-08 3.58e-08 2.91e-07 8.98e-08 3.13e-07   erg/cm2
Peak flux Power-law 8.07e-01 9.84e-01 8.71e-01 1.33e+00 3.12e+00 3.99e+00   ph/cm2/s
              Error 1.50e-01 1.15e-01 9.63e-02 3.01e-01 3.19e-01 4.14e-01   ph/cm2/s
 
Fluence   Cutoff-PL 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 Cutoff-PL 6.85e-01 1.05e+00 9.47e-01 3.05e+00 3.30e+00 0.00e+00   ph/cm2/s
              Error 1.80e-01 1.37e-01 1.19e-01 3.28e-01 5.28e-01 0.00e+00   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    1.297    0.103    -      -           1.12e-02 6.57e-04   60.790 57
CPL   0.965    0.406     165.1  -49.8      1.62e-02 7.51e-03   58.790 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.177    0.161    -      -           2.67e-02 2.64e-03   50.680 57
CPL   0.378    0.764     107.9  166.4      6.49e-02 6.42e-02   46.750 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: 11.584000 sec.
T50 in the 50-300 keV band: 6.976000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   12.556   -0.416   12.140
T90    11.620   -0.016   11.604
T50     7.072    1.088    8.160
Peak    1.000    6.040    7.040

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  327.1111 -10.5317 0.0076   31.6  101.5       2.2687    25.3  TRIG_00506902       
------------------------------------------
 
Foreground time interval of the image:
 -0.416  12.140 (delta_t =  12.556 [sec])
Background time interval of the image:
-109.723  -0.416 (delta_t = 109.307 [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   -0.416 sec. to   12.140 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29736     ( -0.103012   0.102361 )
Norm@50keV  : 1.11793E-02    ( -0.000657501   0.000657433 )
------------------------------------------------------------
# Chi-Squared =          60.79 using 59 PHA bins.
# Reduced chi-squared =          1.067 for     57 degrees of freedom 
# Null hypothesis probability =   3.409520e-01
 
Photon flux (15-150 keV)    in 12.56 sec: 1.33308 ( -0.0814895  0.0816123 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.38842e-06 ( -8.95762e-08  8.99375e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.416 sec. to   12.140 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.965203     ( -0.439323   0.373227 )
Epeak [keV] : 165.073      ( -65.5642 -165.075 )
Norm@50keV  : 1.61633E-02    ( -0.00526966   0.00975291 )
------------------------------------------------------------
# Chi-Squared =          58.79 using 59 PHA bins.
# Reduced chi-squared =          1.050 for     56 degrees of freedom 
# Null hypothesis probability =   3.737163e-01
 
Photon flux (15-150 keV)    in 12.56 sec: 1.31354 ( -0.08485  0.08482 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   -0.416 sec. to   12.140 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.98744   ( -164.023   -154.023 )
beta        : -1.36494    ( -0.116871   0.114741 )
Epeak [keV] : 25.7363      ( -6.01721 5.08925 )
Norm@50keV   : 814.696    ( -814.696   16069.9 )
------------------------------------------------------------
# Chi-Squared =          57.02 using 59 PHA bins.
# Reduced chi-squared =          1.037 for     55 degrees of freedom 
# Null hypothesis probability =   3.999652e-01
 
Photon flux (15-150 keV)    in 12.56 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]    : 17.5299  (-1.32102  1.46123)
R^2/D10^2   : 9.24741E-02  (-0.0220694   0.0283893)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         110.63 using 59 PHA bins.
# Reduced chi-squared =         1.9408 for     57 degrees of freedom 
# Null hypothesis probability =   2.702927e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.205e-08   8.535e-09
25- 50  3.266e-07   2.506e-08
50-150  7.232e-07   8.120e-08
15-150  1.122e-06   8.239e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.995       (      )
Norm        : 5.56046       (-5.56046     -5.56046)
------------------------------------------------------------
# Chi-Squared =          76.10 using 59 PHA bins.
# Reduced chi-squared =          1.335 for     57 degrees of freedom 
# Null hypothesis probability =   4.633063e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.739e-07   9.031e-08
25- 50  3.346e-07   1.729e-07
50-150  7.338e-07   3.796e-07
15-150  1.242e-06   6.456e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.50305        (-1.93238      2.29361)
R1^2/D10^2  : 0.645635        (-0.31441      0.778056)
kT2 [keV]   : 31.9274        (-7.11027      18.5391)
R2^2/D10^2  : 9.79051E-03    (-0.00737318   0.0140619)
------------------------------------------------------------
# Chi-Squared =          58.84 using 59 PHA bins.
# Reduced chi-squared =          1.070 for     55 degrees of freedom 
# Null hypothesis probability =   3.369221e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.294e-07   3.762e-08
25- 50  3.337e-07   6.914e-08
50-150  9.043e-07   3.849e-07
15-150  1.367e-06   4.542e-07

Peak spectrum fit

Power-law model
Time interval is from    6.040 sec. to    7.040 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.17692     ( -0.162956   0.159717 )
Norm@50keV  : 2.66963E-02    ( -0.00264387   0.00264313 )
------------------------------------------------------------
# Chi-Squared =          50.68 using 59 PHA bins.
# Reduced chi-squared =         0.8892 for     57 degrees of freedom 
# Null hypothesis probability =   7.095325e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.12380 ( -0.319018  0.319609 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.72641e-07 ( -2.91905e-08  2.93364e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    6.040 sec. to    7.040 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.377649     ( -0.834444   0.693903 )
Epeak [keV] : 107.920      ( -31.2371 301.61 )
Norm@50keV  : 6.48785E-02    ( -0.0343454   0.0940261 )
------------------------------------------------------------
# Chi-Squared =          46.75 using 59 PHA bins.
# Reduced chi-squared =         0.8348 for     56 degrees of freedom 
# Null hypothesis probability =   8.060806e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.04939 ( -0.32777  0.32729 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    6.040 sec. to    7.040 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.48320   ( -2.95513   -2.25786 )
beta        : -1.45445    ( -1.17933   0.268404 )
Epeak [keV] : 41.8141      ( -12.367 100.57 )
Norm@50keV   : 5.14659    ( -5.11071   160.167 )
------------------------------------------------------------
# Chi-Squared =          45.16 using 59 PHA bins.
# Reduced chi-squared =         0.8211 for     55 degrees of freedom 
# Null hypothesis probability =   8.253570e-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]    : 18.1852  (-2.08444  2.46897)
R^2/D10^2   : 0.203988  (-0.0712491   0.103992)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          57.27 using 59 PHA bins.
# Reduced chi-squared =          1.005 for     57 degrees of freedom 
# Null hypothesis probability =   4.650715e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.346e-08   2.660e-09
25- 50  6.273e-08   8.975e-09
50-150  1.510e-07   2.555e-08
15-150  2.272e-07   3.035e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.997       (      )
Norm        : 12.9930       (-12.993     -12.993)
------------------------------------------------------------
# Chi-Squared =          62.95 using 59 PHA bins.
# Reduced chi-squared =          1.104 for     57 degrees of freedom 
# Null hypothesis probability =   2.739147e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.235e-08   1.746e-08
25- 50  6.224e-08   3.343e-08
50-150  1.365e-07   7.275e-08
15-150  2.311e-07   1.231e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 12.1889        (-4.49672      3.88603)
R1^2/D10^2  : 0.558097        (-0.30912      1.21009)
kT2 [keV]   : 50.6466        (-23.3427      -46.7593)
R2^2/D10^2  : 5.13784E-03    (   )
------------------------------------------------------------
# Chi-Squared =          45.18 using 59 PHA bins.
# Chi-Squared =          45.15 using 59 PHA bins.
# Reduced chi-squared =         0.8214 for     55 degrees of freedom 
# Reduced chi-squared =         0.8209 for     55 degrees of freedom 
# Null hypothesis probability =   8.249449e-01
# Null hypothesis probability =   8.257832e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.925e-08   9.058e-09
25- 50  6.634e-08   2.835e-08
50-150  1.789e-07   9.442e-08
15-150  2.645e-07   1.244e-07
Plot creation:
Fri Nov  4 03:48:58 EDT 2011