batgrbproduct Analysis for Trigger=323898

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Thu Aug  6 11:42:49 EDT 2009
             Host Name: gcn14
   Current Working Dir: /net/raid16/BAT_GRB_process_2009/323898
======================================================================

  Trigger: 00323898      Segment: 000

  BAT Trigger Time: 242326548.48   [s; MET]
      Trigger Stop: 242326550.528   [s; MET]
               UTC: 2008-09-05T16:55:45.405420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 301.72269381416   Dec: -62.5711596742389  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.01
     Image Trigger?:     NO
     Rate S/N Ratio:     15.7797338380595  [ if not an image trigger ]
     Image S/N Ratio:    8.01

  Flight Position:   [ source = BAT ]
    RA: 301.72269381416   Dec: -62.5711596742389  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 301.754462043636   Dec: -62.5736453044592  [deg; J2000]  
        { 20h 07m 01.1s , -62d 34' 25.1" }
         +/- 1.76470888316301 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.744326328279381 [arcmin] (formal 1-sigma fit error)
    SNR: 13.5122688396375
 
  Angular difference between Flight and Ground position is 0.890575 arcmin
 
  Partial Coding Fraction: 0.3789062    [ including projection effects ]

  Duration
     T90: 101.624000012875 +/- 28.0583333245587
        Measured from: 0.412000000476837
                   to: 102.036000013351     [s; relative to TRIGTIME]
     T50: 77.863999992609 +/- 4.55790348152093
        Measured from: 5.37600001692772
                   to: 83.2400000095367     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.45600000023842     
                   to: 3.45600000023842     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.727999985218048     
                   to: 149.692000001669     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.927499   1.140963   0.793249   0.163443
           0.080698   0.080492   0.068641   0.058955 [error]
 Peak      0.050906   0.059996   0.063534   0.016283
           0.010245   0.010187   0.009243   0.007644 [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 3.34e-07 5.22e-07 6.15e-07 1.40e-06 1.88e-06 2.87e-06   erg/cm2
              Error 4.42e-08 4.22e-08 6.76e-08 3.27e-07 1.60e-07 3.81e-07   erg/cm2
Peak flux Power-law 5.43e-01 5.51e-01 3.94e-01 4.49e-01 1.66e+00 1.94e+00   ph/cm2/s
              Error 1.57e-01 9.59e-02 7.52e-02 1.82e-01 2.70e-01 3.00e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.26e-07 5.30e-07 6.21e-07 1.13e-06 1.86e-06 2.61e-06   erg/cm2
              Error 5.12e-08 4.96e-08 7.14e-08 5.97e-07 1.73e-07 6.28e-07   erg/cm2
Peak flux Cutoff-PL 5.42e-01 5.51e-01 3.94e-01 4.47e-01 1.66e+00 1.94e+00   ph/cm2/s
              Error 1.62e-01 9.56e-02 7.50e-02 1.81e-01 2.69e-01 3.32e-01   ph/cm2/s
 
Fluence        Band 2.76e-07 4.93e-07 6.05e-07 1.43e-06 1.79e-06 2.83e-06   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 5.15e-01 5.41e-01 4.03e-01 4.71e-01 1.67e+00 1.94e+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    1.763    0.142    -      -           1.36e-03 1.12e-04   62.430 57
CPL   1.621    0.424     132.5    0.0      1.60e-03 0.00e+00   62.210 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.484    0.283    -      -           1.34e-02 2.08e-03   75.090 57
CPL   1.490    0.285    9999.3    0.0      1.34e-02 9.05e-03   75.090 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: 86.528000 sec.
T50 in the 50-300 keV band: 69.760000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  150.420   -0.728  149.692
T90   101.624    0.412  102.036
T50    77.864    5.376   83.240
Peak    1.000    2.456    3.456

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  301.7545 -62.5736 0.0142   44.8  177.7       1.2741    13.5  TRIG_00323898       
------------------------------------------
 
Foreground time interval of the image:
 -0.728  25.221 (delta_t =  25.949 [sec])
Background time interval of the image:
-239.480  -0.728 (delta_t = 238.752 [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   -0.728 sec. to  149.692 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.76348     ( -0.141064   0.143688 )
Norm@50keV  : 1.35621E-03    ( -0.000112404   0.000111491 )
------------------------------------------------------------
# Chi-Squared =          62.43 using 59 PHA bins.
# Reduced chi-squared =          1.095 for     57 degrees of freedom 
# Null hypothesis probability =   2.894694e-01
 
Photon flux (15-150 keV)    in 150.4 sec: 0.184303 ( -0.0151441  0.0152074 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.88078e-06 ( -1.59692e-07  1.60549e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.728 sec. to  149.692 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.62137     ( -0.568767   0.279443 )
Epeak [keV] : 132.462      (   )
Norm@50keV  : 1.60211E-03    (     )
------------------------------------------------------------
# Chi-Squared =          62.21 using 59 PHA bins.
# Reduced chi-squared =          1.111 for     56 degrees of freedom 
# Null hypothesis probability =   2.646908e-01
 
Photon flux (15-150 keV)    in 150.4 sec: 0.182937 ( -0.015892  0.015848 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.86368e-06 ( -1.73592e-07  1.71787e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.728 sec. to  149.692 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.34931   ( 1.34713   6.34113 )
beta        : -1.83878    ( 1.84552   0.2161 )
Epeak [keV] : 59.2176      ( -60.0396 -60.0396 )
Norm@50keV   : 2.38083E-03    ( -0.000913409   0.104285 )
------------------------------------------------------------
# Chi-Squared =          62.17 using 59 PHA bins.
# Reduced chi-squared =          1.130 for     55 degrees of freedom 
# Null hypothesis probability =   2.360364e-01
 
Photon flux (15-150 keV)    in 150.4 sec: 0.168201 ( -0.014201  0.013517 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.78844e-06 ( -1.64222e-07  1.60086e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.1317  (-1.3327  1.50436)
R^2/D10^2   : 3.10722E-02  (-0.0102864   0.0152183)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         108.20 using 59 PHA bins.
# Reduced chi-squared =         1.8982 for     57 degrees of freedom 
# Null hypothesis probability =   5.046394e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.709e-07   2.655e-08
25- 50  5.950e-07   6.700e-08
50-150  6.524e-07   1.123e-07
15-150  1.418e-06   1.441e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 122.597       (-11.2498      79.2749)
Norm        : 0.775579       (-0.0799925     0.0936557)
------------------------------------------------------------
# Chi-Squared =          63.22 using 59 PHA bins.
# Reduced chi-squared =          1.109 for     57 degrees of freedom 
# Null hypothesis probability =   2.661286e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.036e-07   3.677e-08
25- 50  5.451e-07   4.813e-08
50-150  9.829e-07   1.444e-07
15-150  1.832e-06   1.775e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.92613        (-1.59304      1.62427)
R1^2/D10^2  : 0.231510        (-0.118694      0.434411)
kT2 [keV]   : 26.0340        (-5.94572      11.2347)
R2^2/D10^2  : 1.90379E-03    (-0.00135396   0.00327929)
------------------------------------------------------------
# Chi-Squared =          63.96 using 59 PHA bins.
# Reduced chi-squared =          1.163 for     55 degrees of freedom 
# Null hypothesis probability =   1.909740e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.983e-07   9.607e-08
25- 50  5.469e-07   1.462e-07
50-150  1.010e-06   4.908e-07
15-150  1.855e-06   6.057e-07

Peak spectrum fit

Power-law model
Time interval is from    2.456 sec. to    3.456 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48421     ( -0.280705   0.285798 )
Norm@50keV  : 1.33869E-02    ( -0.002081   0.00207261 )
------------------------------------------------------------
# Chi-Squared =          75.09 using 59 PHA bins.
# Reduced chi-squared =          1.317 for     57 degrees of freedom 
# Null hypothesis probability =   5.447518e-02
 
Photon flux (15-150 keV)    in 1 sec: 1.66421 ( -0.269276  0.270165 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.27329e-07 ( -2.13621e-08  2.14734e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    2.456 sec. to    3.456 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48958     ( -0.290586   0.279955 )
Epeak [keV] : 9999.32      ( -9984.05 -9984.05 )
Norm@50keV  : 1.33805E-02    ( -0.00208394   0.0160119 )
------------------------------------------------------------
# Chi-Squared =          75.09 using 59 PHA bins.
# Reduced chi-squared =          1.341 for     56 degrees of freedom 
# Null hypothesis probability =   4.515958e-02
 
Photon flux (15-150 keV)    in 1 sec: 1.66352 ( -0.26866  0.26984 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.27313e-07 ( -2.1226e-08  2.1513e-08 ) ergs/cm2
 
Band function
Time interval is from    2.456 sec. to    3.456 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.25124   ( 1.25124   1.25124 )
beta        : -1.48418    ( -0.285458   0.281109 )
Epeak [keV] : 19.9011      ( -19.8981 -19.8981 )
Norm@50keV   : 2.74893E-02    ( -0.0139759   2.07367 )
------------------------------------------------------------
# Chi-Squared =          75.09 using 59 PHA bins.
# Reduced chi-squared =          1.365 for     55 degrees of freedom 
# Null hypothesis probability =   3.724646e-02
 
Photon flux (15-150 keV)    in 1 sec: 1.66577 ( -0.25506  0.2579 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.26819e-07 ( -1.9476e-08  2.2856e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 17.9149  (-3.56909  4.61916)
R^2/D10^2   : 0.100269  (-0.0545688   0.116093)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          90.34 using 59 PHA bins.
# Reduced chi-squared =          1.585 for     57 degrees of freedom 
# Null hypothesis probability =   3.238250e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.453e-09   2.174e-09
25- 50  2.974e-08   8.675e-09
50-150  6.919e-08   1.988e-08
15-150  1.054e-07   2.720e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.359       (-78.4524      -199.768)
Norm        : 6.83424       (-1.05452     1.05723)
------------------------------------------------------------
# Chi-Squared =          76.41 using 59 PHA bins.
# Reduced chi-squared =          1.341 for     57 degrees of freedom 
# Null hypothesis probability =   4.400003e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.702e-08   9.300e-09
25- 50  3.274e-08   1.793e-08
50-150  7.180e-08   3.938e-08
15-150  1.215e-07   6.550e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.70028        (-2.1687      4.93036)
R1^2/D10^2  : 153.613        (-150.221      -151.451)
kT2 [keV]   : 21.8162        (-5.12078      14.638)
R2^2/D10^2  : 4.80386E-02    (-0.0398414   0.0748355)
------------------------------------------------------------
# Chi-Squared =          74.93 using 59 PHA bins.
# Reduced chi-squared =          1.362 for     55 degrees of freedom 
# Null hypothesis probability =   3.824766e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.873e-08   9.825e-09
25- 50  2.379e-08   9.842e-09
50-150  7.945e-08   3.031e-08
15-150  1.220e-07   3.555e-08
Plot creation:
Thu Jul 28 10:57:09 EDT 2011