batgrbproduct Analysis for Trigger=349718

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.44
    Process Start Time (local time): Wed Apr 22 11:25:56 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger349718/GCN5_download_cron
======================================================================

  Trigger: 00349718      Segment: 000

  BAT Trigger Time: 261991824.128   [s; MET]
      Trigger Stop: 261991828.224   [s; MET]
               UTC: 2009-04-21T07:30:19.451160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 311.382173194411   Dec: -72.5775125348574  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.79
     Image Trigger?:     NO
     Rate S/N Ratio:     14.9666295470958  [ if not an image trigger ]
     Image S/N Ratio:    5.79

  Flight Position:   [ source = BAT ]
    RA: 311.382173194411   Dec: -72.5775125348574  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 311.333313507712   Dec: -72.5973756585196  [deg; J2000]  
        { 20h 45m 20.0s , -72d 35' 50.6" }
         +/- 3.6062732183693 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.99406277926859 [arcmin] (formal 1-sigma fit error)
    SNR: 4.86766119079454
 
  Angular difference between Flight and Ground position is 1.479854 arcmin
 
  Partial Coding Fraction: 0.765625    [ including projection effects ]

  Duration
     T90: 4.09600001573563 +/- 
        Measured from: 0
                   to: 4.09600001573563     [s; relative to TRIGTIME]
     T50: 4.09600001573563 +/- 
        Measured from: 0
                   to: 4.09600001573563     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 4.09600001573563 second)
        Measured from: 0     
                   to: 4.09600001573563     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 4.09600001573563     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.072458   0.036197  -0.004869   0.006665
           0.014043   0.012405   0.010619   0.009425 [error]
 Peak      0.072458   0.036197  -0.004869   0.006665
           0.014043   0.012405   0.010619   0.009425 [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 1.94e-08 1.50e-08 7.78e-09 5.83e-09 4.48e-08 4.77e-08   erg/cm2
              Error 6.40e-09 6.37e-09 6.43e-09 9.38e-09 1.79e-08 2.27e-08   erg/cm2
Peak flux Power-law 1.57e-01 6.84e-02 1.77e-02 5.68e-03 2.47e-01 2.49e-01   ph/cm2/s
              Error 5.28e-02 2.79e-02 1.42e-02 9.01e-03 7.76e-02 7.90e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.97e-08 1.86e-08 2.50e-09 1.64e-11 4.08e-08 4.09e-08   erg/cm2
              Error 7.22e-09 8.81e-09 5.45e-09 3.50e-09 1.41e-08 1.41e-08   erg/cm2
Peak flux Cutoff-PL 1.55e-01 8.69e-02 6.47e-03 2.29e-05 2.49e-01 2.49e-01   ph/cm2/s
              Error 5.93e-02 3.87e-02 1.26e-02 1.82e-03 7.45e-02 7.45e-02   ph/cm2/s
 
Fluence        Band 2.06e-08 1.55e-08 6.41e-09 3.60e-09 4.46e-08 4.80e-08   erg/cm2
              Error 6.66e-09 4.58e-09 3.09e-09 3.78e-09 1.37e-08 1.83e-08   erg/cm2
Peak flux      Band 1.58e-01 8.34e-02 9.44e-03 1.47e-04 2.51e-01 2.50e-01   ph/cm2/s
              Error 4.69e-02 2.48e-02 9.84e-03 4.34e-03 7.45e-02 7.44e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.946    0.745    -      -           9.33e-04 7.80e-04   53.685 57
CPL   0.006    3.122      20.2   15.2      1.08e-01 4.47e+00   51.141 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.946    0.745    -      -           9.33e-04 7.80e-04   53.685 57
CPL   0.006    2.697      20.2   15.2      1.08e-01 4.47e+00   51.141 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    4.096    0.000    4.096
T90     4.096    0.000    4.096
T50     4.096    0.000    4.096
Peak    4.096    0.000    4.096

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  311.3333 -72.5974 0.0392   26.7 -133.9       0.1265     4.9  TRIG_00349718       
------------------------------------------
 
Foreground time interval of the image:
  0.000   4.096 (delta_t =   4.096 [sec])
Background time interval of the image:
-60.128 -16.128 (delta_t =  44.000 [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    4.096 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.94595     ( -0.636844   0.854068 )
Norm@50keV  : 9.328397E-04    ( -9.328398E-04   6.276024E-04) )
------------------------------------------------------------
 Chi-Squared =      53.68538     using    59 PHA bins.
 Reduced chi-squared =     0.9418487     for     57 degrees of freedom
 Null hypothesis probability = 0.600
 
Photon flux (15-150 keV)    in 4.096 sec: 0.246803 ( -0.077384  0.077853 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.48123e-08 ( -1.67786e-08  1.89551e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    4.096 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 6.224640E-03     ( -3.00622   3.23703 )
Epeak [keV] : 20.2069      ( -20.1969 10.2397 )
Norm@50keV  : 0.107656    ( -0.107656   8.82730 )
------------------------------------------------------------
 Chi-Squared =      51.14146     using    59 PHA bins.
 Reduced chi-squared =     0.9132404     for     56 degrees of freedom
 Null hypothesis probability = 0.659
 
Photon flux (15-150 keV)    in 4.096 sec: 0.248852 ( -0.074302  0.074714 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.08208e-08 ( -1.32699e-08  1.49704e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    4.096 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.40336   ( -8.59664   0.805525 )
beta        : -9.33507    ( -1.430511E-05   7.93749 )
Epeak [keV] : 10.5645      ( -9.66266 20.9395 )
Norm@50keV   : 1.118850E-02    ( -0.460466   294.739 )
------------------------------------------------------------
 Chi-Squared =      52.34920     using    59 PHA bins.
 Reduced chi-squared =     0.9518036     for     55 degrees of freedom
 Null hypothesis probability = 0.577
 
Photon flux (15-150 keV)    in 4.096 sec: 0.250944 ( -0.074502  0.074517 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.45538e-08 ( -1.37838e-08  1.36741e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to    4.096 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.94595     ( -0.636844   0.854068 )
Norm@50keV  : 9.328397E-04    ( -9.328398E-04   6.276024E-04) )
------------------------------------------------------------
 Chi-Squared =      53.68538     using    59 PHA bins.
 Reduced chi-squared =     0.9418487     for     57 degrees of freedom
 Null hypothesis probability = 0.600
 
Photon flux (15-150 keV)    in 4.096 sec: 0.246803 ( -0.077384  0.077853 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.48123e-08 ( -1.67786e-08  1.89551e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    4.096 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 6.224640E-03     ( -3.00622   2.38870 )
Epeak [keV] : 20.2069      ( -20.1969 10.2397 )
Norm@50keV  : 0.107656    ( -0.107656   8.82730 )
------------------------------------------------------------
 Chi-Squared =      51.14146     using    59 PHA bins.
 Reduced chi-squared =     0.9132404     for     56 degrees of freedom
 Null hypothesis probability = 0.659
 
Photon flux (15-150 keV)    in 4.096 sec: 0.248852 ( -0.074302  0.074714 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.08208e-08 ( -1.32699e-08  1.49704e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    4.096 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.40336   ( -8.59664   0.805525 )
beta        : -9.33507    (     )
Epeak [keV] : 10.5645      (   )
Norm@50keV   : 1.118850E-02    (     )
------------------------------------------------------------
 Chi-Squared =      52.34920     using    59 PHA bins.
 Reduced chi-squared =     0.9518036     for     55 degrees of freedom
 Null hypothesis probability = 0.577
 
Photon flux (15-150 keV)    in 4.096 sec: 0.250944 ( -0.074502  0.074517 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.45538e-08 ( -1.37838e-08  1.36741e-08 ) ergs/cm2
 
Plot creation:
Wed Apr 22 11:50:17 EDT 2009