batgrbproduct Analysis for Trigger=381434

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Tue Dec 29 09:35:45 EST 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger381434/GCN5_download_cron
======================================================================

  Trigger: 00381434      Segment: 000

  BAT Trigger Time: 283745229.416   [s; MET]
      Trigger Stop: 283745229.48   [s; MET]
               UTC: 2009-12-29T02:07:04.026500    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 74.8157170298384   Dec: -55.0421834227911  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.56
     Image Trigger?:     NO
     Rate S/N Ratio:     8.12403840463596  [ if not an image trigger ]
     Image S/N Ratio:    6.56

  Flight Position:   [ source = BAT ]
    RA: 74.8157170298384   Dec: -55.0421834227911  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 74.7542399661944   Dec: -54.9952534603265  [deg; J2000]  
        { 04h 59m 01.0s , -54d 59' 42.9" }
         +/- 3.2819975369978 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.75046780853913 [arcmin] (formal 1-sigma fit error)
    SNR: 5.5690103074071
 
  Angular difference between Flight and Ground position is 3.521471 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 0.0640000104904175 +/- 
        Measured from: 0
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     T50: 0.0640000104904175 +/- 
        Measured from: 0
                   to: 0.0640000104904175     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.0640000104904175 second)
        Measured from: 0     
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.003176   0.001632   0.005482   0.004656
           0.001265   0.001441   0.001369   0.001366 [error]
 Peak      0.003176   0.001632   0.005482   0.004656
           0.001265   0.001441   0.001369   0.001366 [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 4.60e-10 1.01e-09 1.74e-09 6.95e-09 4.76e-09 1.01e-08   erg/cm2
              Error 4.68e-10 7.82e-10 1.39e-09 1.72e-08 3.76e-09 1.70e-08   erg/cm2
Peak flux Power-law 2.30e-01 2.75e-01 2.37e-01 3.49e-01 8.65e-01 1.09e+00   ph/cm2/s
              Error 2.39e-01 2.16e-01 1.87e-01 7.11e-01 6.52e-01 6.66e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.59e-10 1.01e-09 1.74e-09 6.89e-09 4.76e-09 1.01e-08   erg/cm2
              Error 4.69e-10 7.83e-10 1.39e-09 1.71e-08 3.76e-09 1.70e-08   erg/cm2
Peak flux Cutoff-PL 2.30e-01 2.75e-01 2.37e-01 3.46e-01 8.64e-01 1.09e+00   ph/cm2/s
              Error 2.39e-01 2.16e-01 1.87e-01 7.08e-01 6.52e-01 6.63e-01   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    1.214    1.354    -      -           7.35e-03 3.59e-03   64.900 57
CPL   2.470    0.000     155.0    0.0      1.88e-03 0.00e+00   64.660 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.214    1.354    -      -           7.35e-03 3.59e-03   64.900 57
CPL   2.470    0.000     155.0    0.0      1.88e-03 0.00e+00   64.660 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    0.064    0.000    0.064
T90     0.064    0.000    0.064
T50     0.064    0.000    0.064
Peak    0.064    0.000    0.064

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   74.7542 -54.9953 0.0344   12.5 -133.9       0.0145     5.6  TRIG_00381434       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.064 (delta_t =   0.064 [sec])
Background time interval of the image:
-60.416  -5.416 (delta_t =  55.000 [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    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.21421     ( -1.51262   1.19628 )
Norm@50keV  : 7.35405E-03    ( -0.00359414   0.00359353 )
------------------------------------------------------------
# Chi-Squared =          64.90 using 59 PHA bins.
# Reduced chi-squared =          1.139 for     57 degrees of freedom 
# Null hypothesis probability =   2.205216e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.864797 ( -0.864812  0.439901 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.75804e-09 ( -4.75804e-09  2.75414e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.46956     (     )
Epeak [keV] : 154.955      (   )
Norm@50keV  : 1.88304E-03    (     )
------------------------------------------------------------
# Chi-Squared =          64.66 using 59 PHA bins.
# Reduced chi-squared =          1.155 for     56 degrees of freedom 
# Null hypothesis probability =   2.000546e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.864339 ( -0.864339  0.439801 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.7571e-09 ( -4.7571e-09  2.75618e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.986906   ( 0.987095   0.987095 )
beta        : -1.21307    ( 1.2128   1.51208 )
Epeak [keV] : 47.2155      ( -46.7293 -46.7293 )
Norm@50keV   : 1.31120E-02    ( -0.0131235   12432.8 )
------------------------------------------------------------
# Chi-Squared =          64.90 using 59 PHA bins.
# Reduced chi-squared =          1.180 for     55 degrees of freedom 
# Null hypothesis probability =   1.696149e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.21421     ( -1.51262   1.19628 )
Norm@50keV  : 7.35405E-03    ( -0.00359414   0.00359353 )
------------------------------------------------------------
# Chi-Squared =          64.90 using 59 PHA bins.
# Reduced chi-squared =          1.139 for     57 degrees of freedom 
# Null hypothesis probability =   2.205216e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.864797 ( -0.864812  0.439901 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.75804e-09 ( -4.75804e-09  2.75414e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.46956     (     )
Epeak [keV] : 154.955      (   )
Norm@50keV  : 1.88304E-03    (     )
------------------------------------------------------------
# Chi-Squared =          64.66 using 59 PHA bins.
# Reduced chi-squared =          1.155 for     56 degrees of freedom 
# Null hypothesis probability =   2.000546e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.864339 ( -0.864339  0.439801 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.7571e-09 ( -4.7571e-09  2.75618e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.986906   ( 0.987095   0.987095 )
beta        : -1.21307    ( 1.2128   1.51208 )
Epeak [keV] : 47.2155      ( -46.7293 -46.7293 )
Norm@50keV   : 1.31120E-02    ( -0.0131235   12432.8 )
------------------------------------------------------------
# Chi-Squared =          64.90 using 59 PHA bins.
# Reduced chi-squared =          1.180 for     55 degrees of freedom 
# Null hypothesis probability =   1.696149e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Tue Dec 29 09:52:57 EST 2009