batgrbproduct Analysis for Trigger=433160

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Sep  6 13:48:56 EDT 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger433160/SDC
======================================================================

  Trigger: 00433160      Segment: 000

  BAT Trigger Time: 305148720   [s; MET]
      Trigger Stop: 305148784   [s; MET]
               UTC: 2010-09-02T19:31:53.860200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 48.6459500577974   Dec: 30.9725418949067  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.19
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.19

  Flight Position:   [ source = BAT ]
    RA: 48.6459500577974   Dec: 30.9725418949067  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 48.6280267983659   Dec: 30.9689440532056  [deg; J2000]  
        { 03h 14m 30.7s , +30d 58' 08.2" }
         +/- 1.3206419448493 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.558828030952367 [arcmin] (formal 1-sigma fit error)
    SNR: 20.4441122133364
 
  Angular difference between Flight and Ground position is 0.947009 arcmin
 
  Partial Coding Fraction: 0.7265625    [ including projection effects ]

  Duration
     T90: 356.419999957085 +/- 76.6870206966546
        Measured from: -37.1679999828339
                   to: 319.251999974251     [s; relative to TRIGTIME]
     T50: 74.4679999351501 +/- 21.0305929635034
        Measured from: 138.624000012875
                   to: 213.091999948025     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 207.888000011444     
                   to: 208.888000011444     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -49.4279999732971     
                   to: 409.632000029087     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.450006   2.077013   1.287073   0.123639
           0.120627   0.121151   0.109319   0.100416 [error]
 Peak      0.037292   0.039596   0.029915   0.008952
           0.006288   0.006205   0.005662   0.004964 [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 7.15e-07 9.43e-07 9.11e-07 1.57e-06 3.09e-06 4.14e-06   erg/cm2
              Error 7.16e-08 6.03e-08 1.08e-07 3.81e-07 2.37e-07 4.86e-07   erg/cm2
Peak flux Power-law 3.60e-01 3.17e-01 1.91e-01 1.75e-01 9.43e-01 1.04e+00   ph/cm2/s
              Error 8.20e-02 4.89e-02 4.56e-02 8.07e-02 1.45e-01 1.68e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.12e-07 9.47e-07 9.11e-07 1.44e-06 3.07e-06 4.01e-06   erg/cm2
              Error 7.33e-08 6.85e-08 1.10e-07 6.59e-07 2.63e-07 7.44e-07   erg/cm2
Peak flux Cutoff-PL 3.35e-01 3.41e-01 1.95e-01 7.94e-02 9.22e-01 9.50e-01   ph/cm2/s
              Error 9.33e-02 6.36e-02 5.06e-02 1.49e-01 1.93e-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 3.41e-01 9.78e-01 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 1.89e-01 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    2.049    0.137    -      -           7.27e-04 6.03e-05   45.650 57
CPL   2.045    0.227    9999.4    0.0      7.29e-04 0.00e+00   45.650 56
 
The chi2 of BB fit is  which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.727    0.278    -      -           7.03e-03 1.28e-03   49.730 57
CPL   1.092    1.137      63.6    0.0      1.58e-02 0.00e+00   48.610 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: 97.024000 sec.
T50 in the 50-300 keV band: 54.464000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  459.060  -49.428  409.632
T90   356.420  -37.168  319.252
T50    74.468  138.624  213.092
Peak    1.000  207.888  208.888

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   48.6280 +30.9689 0.0094   20.7  -76.7       4.8541    20.4  TRIG_00433160       
------------------------------------------
 
Foreground time interval of the image:
 -3.899 260.301 (delta_t = 264.200 [sec])
Background time interval of the image:

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  -49.428 sec. to  409.632 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.04871     ( -0.134873   0.139898 )
Norm@50keV  : 7.27144E-04    ( -6.0884e-05   5.97548e-05 )
------------------------------------------------------------
# Chi-Squared =          45.65 using 59 PHA bins.
# Reduced chi-squared =         0.8008 for     57 degrees of freedom 
# Null hypothesis probability =   8.598781e-01
 
Photon flux (15-150 keV)    in 459.1 sec: 0.111588 ( -0.0072474  0.00726074 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.08808e-06 ( -2.35317e-07  2.39023e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -49.428 sec. to  409.632 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.04536     ( -0.311073   0.143059 )
Epeak [keV] : 9999.36      (   )
Norm@50keV  : 7.28541E-04    (     )
------------------------------------------------------------
# Chi-Squared =          45.65 using 59 PHA bins.
# Reduced chi-squared =         0.8152 for     56 degrees of freedom 
# Null hypothesis probability =   8.368892e-01
 
Photon flux (15-150 keV)    in 459.1 sec: 0.111536 ( -0.007138  0.007254 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.07418e-06 ( -2.72614e-07  2.52836e-07 ) ergs/cm2
 
Band function
Time interval is from  -49.428 sec. to  409.632 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.04571   ( 2.04571   2.04571 )
beta        : -2.04871    ( -0.139898   0.134896 )
Epeak [keV] : 0.563855      ( -0.563855 -0.563855 )
Norm@50keV   : 9.88291E-02    ( -0.00827499   0.00812152 )
------------------------------------------------------------
# Chi-Squared =          45.65 using 59 PHA bins.
# Reduced chi-squared =         0.8300 for     55 degrees of freedom 
# Null hypothesis probability =   8.114831e-01
 
Photon flux (15-150 keV)    in 459.1 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]    :   (  )
R^2/D10^2   :   (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    :        (      )
Norm        :        (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   :         (      )
R1^2/D10^2  :         (      )
kT2 [keV]   :         (      )
R2^2/D10^2  :     (   )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     

Peak spectrum fit

Power-law model
Time interval is from  207.888 sec. to  208.888 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72685     ( -0.269273   0.285829 )
Norm@50keV  : 7.03149E-03    ( -0.00129625   0.00125952 )
------------------------------------------------------------
# Chi-Squared =          49.73 using 59 PHA bins.
# Reduced chi-squared =         0.8724 for     57 degrees of freedom 
# Null hypothesis probability =   7.419366e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.942792 ( -0.145283  0.145286 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.49757e-08 ( -1.22414e-08  1.26332e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  207.888 sec. to  208.888 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.09230     ( -1.27633   0.996678 )
Epeak [keV] : 63.5615      (   )
Norm@50keV  : 1.58500E-02    (     )
------------------------------------------------------------
# Chi-Squared =          48.61 using 59 PHA bins.
# Reduced chi-squared =         0.8680 for     56 degrees of freedom 
# Null hypothesis probability =   7.479281e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.922419 ( -0.148444  0.148631 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.1236e-08 ( -1.29717e-08  1.38774e-08 ) ergs/cm2
 
Band function
Time interval is from  207.888 sec. to  208.888 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.09231   ( 1.32333   1.55589 )
beta        : -10.00000    ( 3.49461e+11   3.49461e+11 )
Epeak [keV] : 63.5512      ( -23.3278 -63.5493 )
Norm@50keV   : 1.58482E-02    ( -0.00980346   0.0644306 )
------------------------------------------------------------
# Chi-Squared =          48.61 using 59 PHA bins.
# Reduced chi-squared =         0.8838 for     55 degrees of freedom 
# Null hypothesis probability =   7.158234e-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]    :   (  )
R^2/D10^2   :   (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    :        (      )
Norm        :        (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   :         (      )
R1^2/D10^2  :         (      )
kT2 [keV]   :         (      )
R2^2/D10^2  :     (   )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Plot creation:
Thu May 26 13:44:35 EDT 2011