batgrbproduct Analysis for Trigger=426405

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jul  2 11:22:17 EDT 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger426405/GCN5_download_cron
======================================================================

  Trigger: 00426405      Segment: 000

  BAT Trigger Time: 299688946.688   [s; MET]
      Trigger Stop: 299688950.784   [s; MET]
               UTC: 2010-07-01T14:55:40.743940    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 258.12423007392   Dec: -37.638555572182  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    8.26
     Image Trigger?:     NO
     Rate S/N Ratio:     6.78232998312527  [ if not an image trigger ]
     Image S/N Ratio:    8.26

  Flight Position:   [ source = BAT ]
    RA: 258.12423007392   Dec: -37.638555572182  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 258.133428449551   Dec: -37.6632187614317  [deg; J2000]  
        { 17h 12m 32.0s , -37d 39' 47.6" }
         +/- 2.15947132265272 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.01674826448374 [arcmin] (formal 1-sigma fit error)
    SNR: 10.1269619555371
 
  Angular difference between Flight and Ground position is 1.542959 arcmin
 
  Partial Coding Fraction: 0.9140625    [ including projection effects ]

  Duration
     T90: 15.1279999017715 +/- 2.27599030015451
        Measured from: -9.70399987697601
                   to: 5.42400002479553     [s; relative to TRIGTIME]
     T50: 7.72399997711182 +/- 2.99826682363402
        Measured from: -5.84399992227554
                   to: 1.88000005483627     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.30799996852875     
                   to: 2.30799996852875     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -10.4000000357628     
                   to: 6.32400000095367     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.414489   0.079495   0.001437   0.000679
           0.030075   0.025339   0.022091   0.021374 [error]
 Peak      0.041198   0.008434   0.005609  -0.001191
           0.007618   0.006250   0.005315   0.005262 [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 1.20e-07 3.95e-08 7.29e-09 1.57e-09 1.68e-07 1.68e-07   erg/cm2
              Error 1.81e-08 1.34e-08 5.62e-09 2.24e-09 2.86e-08 2.91e-08   erg/cm2
Peak flux Power-law 3.32e-01 1.12e-01 2.12e-02 4.71e-03 4.68e-01 4.69e-01   ph/cm2/s
              Error 1.09e-01 5.69e-02 2.33e-02 1.10e-02 1.53e-01 1.54e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.20e-07 3.95e-08 7.27e-09 1.56e-09 1.68e-07 1.68e-07   erg/cm2
              Error 1.81e-08 1.34e-08 5.62e-09 2.22e-09 2.86e-08 2.91e-08   erg/cm2
Peak flux Cutoff-PL 4.08e-01 7.71e-02 1.52e-05 1.77e-15 4.85e-01 4.85e-01   ph/cm2/s
              Error 1.24e-01 5.37e-02 1.04e-03 1.40e-01 0.00e+00 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    4.436    0.623    -      -           3.26e-04 1.95e-04   46.600 57
CPL   1.000    0.000      50.0    0.0      3.59e-03 0.00e+00  121.360 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.397    0.956    -      -           1.26e-03 1.26e-03   52.060 57
CPL   1.000    0.000      50.0    0.0      7.79e-03 0.00e+00   63.910 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   16.724  -10.400    6.324
T90    15.128   -9.704    5.424
T50     7.724   -5.844    1.880
Peak    1.000    1.308    2.308

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  258.1334 -37.6632 0.0189   19.0  153.8       0.5624    10.1  TRIG_00426405       
------------------------------------------
 
Foreground time interval of the image:
-10.400   6.324 (delta_t =  16.724 [sec])
Background time interval of the image:
-119.688 -89.648 (delta_t =  30.040 [sec])
-88.688 -10.400 (delta_t =  78.288 [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  -10.400 sec. to    6.324 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.43601     ( -0.574255   0.67102 )
Norm@50keV  : 3.26005E-04    ( -0.00016124   0.000229568 )
------------------------------------------------------------
# Chi-Squared =          46.60 using 59 PHA bins.
# Reduced chi-squared =         0.8175 for     57 degrees of freedom 
# Null hypothesis probability =   8.357785e-01
 
Photon flux (15-150 keV)    in 16.72 sec: 0.296872 ( -0.0438845  0.0439117 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.67646e-07 ( -2.80119e-08  2.92515e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -10.400 sec. to    6.324 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 3.58960E-03    (     )
------------------------------------------------------------
# Chi-Squared =         121.36 using 59 PHA bins.
# Reduced chi-squared =         2.1671 for     56 degrees of freedom 
# Null hypothesis probability =   9.980399e-07
 
Photon flux (15-150 keV)    in 16.72 sec: 0.296652 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.67608e-07 ( -2.8015e-08  2.92533e-08 ) ergs/cm2
 
Band function
Time interval is from  -10.400 sec. to    6.324 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.18999   ( 2.18999   2.18999 )
beta        : -4.43814    ( -0.66899   0.576319 )
Epeak [keV] : 5.63551      ( -5.63551 -5.63551 )
Norm@50keV   : 3.29074    ( -3.29073   16.8355 )
------------------------------------------------------------
# Chi-Squared =          46.60 using 59 PHA bins.
# Reduced chi-squared =         0.8472 for     55 degrees of freedom 
# Null hypothesis probability =   7.827496e-01
 
Photon flux (15-150 keV)    in 16.72 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]    : 3.18798  (-0.439977  0.528486)
R^2/D10^2   : 28.1891  (-17.0218   45.0321)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          47.54 using 59 PHA bins.
# Reduced chi-squared =         0.8341 for     57 degrees of freedom 
# Null hypothesis probability =   8.096262e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.273e-07   4.836e-08
25- 50  2.282e-08   1.026e-08
50-150  5.932e-11   5.497e-11
15-150  1.502e-07   6.378e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 7.02042       (-1.60337      2.31445)
Norm        : 23.3481       (-11.8946     27.0164)
------------------------------------------------------------
# Chi-Squared =          46.73 using 59 PHA bins.
# Reduced chi-squared =         0.8199 for     57 degrees of freedom 
# Null hypothesis probability =   8.321603e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.242e-07   3.841e-08
25- 50  3.098e-08   1.457e-08
50-150  6.937e-10   6.284e-10
15-150  1.558e-07   5.241e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.82233        (-1.42262      0.62227)
R1^2/D10^2  : 53.6315        (-37.2155      295.897)
kT2 [keV]   : 8.85614        (-9.087      -9.087)
R2^2/D10^2  : 4.21702E-02    (-0.0402388   32.9403)
------------------------------------------------------------
# Chi-Squared =          44.93 using 59 PHA bins.
# Reduced chi-squared =         0.8168 for     55 degrees of freedom 
# Null hypothesis probability =   8.318884e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.243e-07   6.629e-08
25- 50  3.543e-08   1.929e-08
50-150  8.043e-09   6.084e-09
15-150  1.677e-07   8.485e-08

Peak spectrum fit

Power-law model
Time interval is from    1.308 sec. to    2.308 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.39738     ( -0.826747   1.08492 )
Norm@50keV  : 1.25521E-03    ( -0.00125469   0.00125792 )
------------------------------------------------------------
# Chi-Squared =          52.06 using 59 PHA bins.
# Reduced chi-squared =         0.9133 for     57 degrees of freedom 
# Null hypothesis probability =   6.605310e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.467705 ( -0.152135  0.153651 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.85786e-08 ( -7.19537e-09  8.58122e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.308 sec. to    2.308 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 7.79153E-03    (     )
------------------------------------------------------------
# Chi-Squared =          63.91 using 59 PHA bins.
# Reduced chi-squared =          1.141 for     56 degrees of freedom 
# Null hypothesis probability =   2.185964e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.484839 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.61228e-08 ( -4.7648e-09  4.8573e-09 ) ergs/cm2
 
Band function
Time interval is from    1.308 sec. to    2.308 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.15636   ( 0.0251181   0.0251181 )
beta        : -7.40703    ( 181.293   191.293 )
Epeak [keV] : 16.5208      ( -7.89837 8.97975 )
Norm@50keV   : 346.471    ( -346.448   13235.5 )
------------------------------------------------------------
# Chi-Squared =          48.38 using 59 PHA bins.
# Reduced chi-squared =         0.8796 for     55 degrees of freedom 
# Null hypothesis probability =   7.237791e-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]    : 4.11919  (-0.907334  1.13696)
R^2/D10^2   : 11.0699  (-7.86751   29.7958)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          48.81 using 59 PHA bins.
# Reduced chi-squared =         0.8563 for     57 degrees of freedom 
# Null hypothesis probability =   7.715899e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.159e-08   7.140e-09
25- 50  4.545e-09   2.970e-09
50-150  6.579e-11   7.055e-11
15-150  1.620e-08   9.780e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 10.7007       (-4.17229      9.03817)
Norm        : 14.2598       (-8.71691     26.1138)
------------------------------------------------------------
# Chi-Squared =          50.72 using 59 PHA bins.
# Reduced chi-squared =         0.8897 for     57 degrees of freedom 
# Null hypothesis probability =   7.083911e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.076e-08   6.700e-09
25- 50  5.060e-09   3.555e-09
50-150  4.153e-10   4.494e-10
15-150  1.623e-08   9.985e-09
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.99962        (-0.901452      1.13294)
R1^2/D10^2  : 12.4868        (-8.96314      35.5221)
kT2 [keV]   : 36.8570        (-37.6454      -37.6454)
R2^2/D10^2  : 6.70810E-04    (-0.000626498   30.7068)
------------------------------------------------------------
# Chi-Squared =          47.83 using 59 PHA bins.
# Reduced chi-squared =         0.8696 for     55 degrees of freedom 
# Null hypothesis probability =   7.427871e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.148e-08   6.700e-09
25- 50  4.926e-09   2.910e-09
50-150  7.180e-09   5.940e-09
15-150  2.358e-08   1.444e-08
Plot creation:
Fri Jul  2 11:36:00 EDT 2010