batgrbproduct Analysis for Trigger=352445

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.44
    Process Start Time (local time): Tue May 19 13:47:46 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger352445/SDC
======================================================================

  Trigger: 00352445      Segment: 000

  BAT Trigger Time: 264329830.464   [s; MET]
      Trigger Stop: 264329846.848   [s; MET]
               UTC: 2009-05-18T08:57:05.712820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 340.236272541621   Dec: -80.5434730875853  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.63
     Image Trigger?:     NO
     Rate S/N Ratio:     12.0830459735946  [ if not an image trigger ]
     Image S/N Ratio:    5.63

  Flight Position:   [ source = BAT ]
    RA: 340.236272541621   Dec: -80.5434730875853  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 339.858241489471   Dec: -80.5104029678979  [deg; J2000]  
        { 22h 39m 26.0s , -80d 30' 37.5" }
         +/- 5.7935982182333 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.83446111789988 [arcmin] (formal 1-sigma fit error)
    SNR: 2.47281787578818
 
  Angular difference between Flight and Ground position is 4.227622 arcmin
 
  Partial Coding Fraction: 0.640625    [ including projection effects ]

  Duration
     T90: 16.3840000033379 +/- 
        Measured from: 0
                   to: 16.3840000033379     [s; relative to TRIGTIME]
     T50: 16.3840000033379 +/- 
        Measured from: 0
                   to: 16.3840000033379     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 16.3840000033379 second)
        Measured from: 0     
                   to: 16.3840000033379     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 16.3840000033379     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.152047   0.055714  -0.063092   0.007391
           0.030810   0.030072   0.026249   0.025150 [error]
 Peak      0.152047   0.055714  -0.063092   0.007391
           0.030810   0.030072   0.026249   0.025150 [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 4.09e-08 2.31e-08 8.22e-09 3.84e-09 7.43e-08 7.56e-08   erg/cm2
              Error 1.55e-08 1.35e-08 1.04e-08 9.31e-09 3.42e-08 3.68e-08   erg/cm2
Peak flux Power-law 8.41e-02 2.69e-02 4.79e-03 9.91e-04 1.16e-01 1.17e-01   ph/cm2/s
              Error 3.20e-02 1.51e-02 5.87e-03 2.21e-03 4.53e-02 4.56e-02   ph/cm2/s
 
Fluence   Cutoff-PL 5.05e-08 2.15e-08 2.16e-11 4.19e-20 7.20e-08 7.20e-08   erg/cm2
              Error 1.83e-08 1.83e-08 2.26e-09 0.00e+00 2.63e-08 2.63e-08   erg/cm2
Peak flux Cutoff-PL 9.85e-02 2.80e-02 1.54e-05 1.51e-14 1.27e-01 1.27e-01   ph/cm2/s
              Error 3.65e-02 2.16e-02 1.46e-03 0.00e+00 4.24e-02 4.25e-02   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    3.483    0.956    -      -           2.92e-04 2.97e-04   44.810 57
CPL   1.000    0.000      50.0    0.0      1.64e-03 0.00e+00   56.830 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    3.483    0.956    -      -           2.92e-04 2.97e-04   44.810 57
CPL   1.000    0.000      50.0    0.0      1.64e-03 0.00e+00   56.830 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   16.384    0.000   16.384
T90    16.384    0.000   16.384
T50    16.384    0.000   16.384
Peak   16.384    0.000   16.384

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  339.8582 -80.5104 0.0779   39.6 -169.3       0.1795     2.5  TRIG_00352445       
------------------------------------------
 
Foreground time interval of the image:
  0.000  16.384 (delta_t =  16.384 [sec])
Background time interval of the image:
-60.464 -38.464 (delta_t =  22.000 [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    0.000 sec. to   16.384 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.48280     ( -0.799896   1.11141 )
Norm@50keV  : 2.92093E-04    ( -0.000291453   0.000302483 )
------------------------------------------------------------
# Chi-Squared =          44.81 using 59 PHA bins.
# Reduced chi-squared =         0.7862 for     57 degrees of freedom 
# Null hypothesis probability =   8.792455e-01
 
Photon flux (15-150 keV)    in 16.38 sec: 0.116432 ( -0.0449915  0.0456562 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.43318e-08 ( -3.08152e-08  3.75539e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   16.384 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 1.64214E-03    (     )
------------------------------------------------------------
# Chi-Squared =          56.83 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     56 degrees of freedom 
# Null hypothesis probability =   4.438262e-01
 
Photon flux (15-150 keV)    in 16.38 sec: 0.126581 ( -0.0414337  0.043452 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.20012e-08 ( -2.40662e-08  2.8495e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   16.384 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -8.96122   ( 0.892705   7.21201 )
beta        : -3.53547    ( -1.09489   0.814243 )
Epeak [keV] : 60.8176      ( -60.8176 -60.8176 )
Norm@50keV   : 3.77365E-02    ( -0.0390631   0.0416656 )
------------------------------------------------------------
# Chi-Squared =          44.82 using 59 PHA bins.
# Reduced chi-squared =         0.8149 for     55 degrees of freedom 
# Null hypothesis probability =   8.348556e-01
 
Photon flux (15-150 keV)    in 16.38 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    0.000 sec. to   16.384 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.48280     ( -0.799896   1.11141 )
Norm@50keV  : 2.92093E-04    ( -0.000291453   0.000302483 )
------------------------------------------------------------
# Chi-Squared =          44.81 using 59 PHA bins.
# Reduced chi-squared =         0.7862 for     57 degrees of freedom 
# Null hypothesis probability =   8.792455e-01
 
Photon flux (15-150 keV)    in 16.38 sec: 0.116432 ( -0.0449915  0.0456562 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.43318e-08 ( -3.08152e-08  3.75539e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   16.384 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 1.64214E-03    (     )
------------------------------------------------------------
# Chi-Squared =          56.83 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     56 degrees of freedom 
# Null hypothesis probability =   4.438262e-01
 
Photon flux (15-150 keV)    in 16.38 sec: 0.126581 ( -0.0414337  0.043452 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.20012e-08 ( -2.40662e-08  2.8495e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   16.384 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -8.96122   ( 0.892705   7.21201 )
beta        : -3.53547    ( -1.09489   0.814243 )
Epeak [keV] : 60.8176      ( -60.8176 -60.8176 )
Norm@50keV   : 3.77365E-02    ( -0.0390631   0.0416656 )
------------------------------------------------------------
# Chi-Squared =          44.82 using 59 PHA bins.
# Reduced chi-squared =         0.8149 for     55 degrees of freedom 
# Null hypothesis probability =   8.348556e-01
 
Photon flux (15-150 keV)    in 16.38 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:
Wed Jun  1 17:31:34 EDT 2011