batgrbproduct Analysis for Trigger=352420

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.44
    Process Start Time (local time): Mon May 18 10:51:52 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger352420/GCN5_download_cron
======================================================================

  Trigger: 00352420      Segment: 000

  BAT Trigger Time: 264304489.024   [s; MET]
      Trigger Stop: 264304489.28   [s; MET]
               UTC: 2009-05-18T01:54:44.273640    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 119.933320952001   Dec: 0.767979769129691  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.03
     Image Trigger?:     NO
     Rate S/N Ratio:     14.6287388383278  [ if not an image trigger ]
     Image S/N Ratio:    9.03

  Flight Position:   [ source = BAT ]
    RA: 119.933320952001   Dec: 0.767979769129691  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 119.949229062035   Dec: 0.777874402093823  [deg; J2000]  
        { 07h 59m 47.8s , +00d 46' 40.3" }
         +/- 1.30514147337468 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.539773996745922 [arcmin] (formal 1-sigma fit error)
    SNR: 20.791855623212
 
  Angular difference between Flight and Ground position is 1.123981 arcmin
 
  Partial Coding Fraction: 0.7578125    [ including projection effects ]

  Duration
     T90: 85.8880000114441 +/- 24.4210112852475
        Measured from: -1.1999998986721
                   to: 84.688000112772     [s; relative to TRIGTIME]
     T50: 38.6559999883175 +/- 32.3862766031964
        Measured from: 0.336000114679337
                   to: 38.9920001029968     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0679999887943268     
                   to: 0.932000011205673     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.47999998927116     
                   to: 93.3280000090599     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.314466   0.400086   0.239263   0.165140
           0.052497   0.051755   0.045818   0.040466 [error]
 Peak      0.073757   0.103220   0.068724   0.019434
           0.007130   0.007570   0.006838   0.005138 [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 9.72e-08 1.69e-07 2.24e-07 6.06e-07 6.53e-07 1.10e-06   erg/cm2
              Error 2.36e-08 2.47e-08 4.72e-08 2.78e-07 1.11e-07 3.16e-07   erg/cm2
Peak flux Power-law 7.85e-01 7.74e-01 5.34e-01 5.82e-01 2.33e+00 2.67e+00   ph/cm2/s
              Error 1.11e-01 6.81e-02 6.04e-02 1.33e-01 1.98e-01 2.30e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.72e-08 1.69e-07 2.24e-07 6.01e-07 6.53e-07 1.09e-06   erg/cm2
              Error 2.36e-08 2.48e-08 4.73e-08 2.76e-07 1.11e-07 3.14e-07   erg/cm2
Peak flux Cutoff-PL 7.63e-01 7.89e-01 5.41e-01 4.62e-01 2.31e+00 2.56e+00   ph/cm2/s
              Error 1.29e-01 8.24e-02 5.03e-02 2.44e-01 2.02e-01 2.49e-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    1.592    0.274    -      -           7.29e-04 1.12e-04   71.580 57
CPL   2.225    0.365      84.2    0.0      3.49e-04 0.00e+00   71.190 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.534    0.149    -      -           1.84e-02 1.63e-03   68.760 57
CPL   1.356    0.481     175.5    0.0      2.29e-02 1.69e-02   68.500 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: 2.624000 sec.
T50 in the 50-300 keV band: 1.088000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   95.808   -2.480   93.328
T90    85.888   -1.200   84.688
T50    38.656    0.336   38.992
Peak    1.000   -0.068    0.932

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  119.9492  +0.7779 0.0092   26.9  -45.7       0.7975    20.8  TRIG_00352420       
------------------------------------------
 
Foreground time interval of the image:
 -2.480   8.477 (delta_t =  10.957 [sec])
Background time interval of the image:
-239.024  -2.480 (delta_t = 236.544 [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   -2.480 sec. to   93.328 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.59223     ( -0.270313   0.276919 )
Norm@50keV  : 7.28520E-04    ( -0.000113746   0.000111207 )
------------------------------------------------------------
# Chi-Squared =          71.58 using 59 PHA bins.
# Reduced chi-squared =          1.256 for     57 degrees of freedom 
# Null hypothesis probability =   9.261793e-02
 
Photon flux (15-150 keV)    in 95.81 sec: 9.33948E-02 ( -0.013535  0.0135637 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.53401e-07 ( -1.09609e-07  1.11742e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.480 sec. to   93.328 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.22550     ( -0.46619   0.263031 )
Epeak [keV] : 84.1730      ( -9995.83 -9995.83 )
Norm@50keV  : 3.48821E-04    (     )
------------------------------------------------------------
# Chi-Squared =          71.19 using 59 PHA bins.
# Reduced chi-squared =          1.271 for     56 degrees of freedom 
# Null hypothesis probability =   8.304761e-02
 
Photon flux (15-150 keV)    in 95.81 sec: 9.33590E-02 ( -0.0135304  0.013559 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.53338e-07 ( -1.09623e-07  1.11766e-07 ) ergs/cm2
 
Band function
Time interval is from   -2.480 sec. to   93.328 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.30485   ( 1.30485   1.30485 )
beta        : -1.59218    ( -0.277275   0.270686 )
Epeak [keV] : 17.4449      ( -17.4449 -17.4449 )
Norm@50keV   : 1.69388E-03    ( -0.00169388   2061.59 )
------------------------------------------------------------
# Chi-Squared =          71.58 using 59 PHA bins.
# Reduced chi-squared =          1.301 for     55 degrees of freedom 
# Null hypothesis probability =   6.590991e-02
 
Photon flux (15-150 keV)    in 95.81 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   -0.048 sec. to    0.912 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.53437     ( -0.147643   0.149975 )
Norm@50keV  : 1.84499E-02    ( -0.00163548   0.00162254 )
------------------------------------------------------------
# Chi-Squared =          68.76 using 59 PHA bins.
# Reduced chi-squared =          1.206 for     57 degrees of freedom 
# Null hypothesis probability =   1.366500e-01
 
Photon flux (15-150 keV)    in 0.96 sec: 2.32522 ( -0.197566  0.197705 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.67123e-07 ( -1.62073e-08  1.63626e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.048 sec. to    0.912 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.35603     ( -0.649258   0.312506 )
Epeak [keV] : 175.486      ( -175.597 -175.597 )
Norm@50keV  : 2.28575E-02    ( -0.00747671   0.0262651 )
------------------------------------------------------------
# Chi-Squared =          68.50 using 59 PHA bins.
# Reduced chi-squared =          1.223 for     56 degrees of freedom 
# Null hypothesis probability =   1.220556e-01
 
Photon flux (15-150 keV)    in 0.96 sec: 2.30827 ( -0.20482  0.2 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.64727e-07 ( -1.836e-08  8.9808e-09 ) ergs/cm2
 
Band function
Time interval is from   -0.048 sec. to    0.912 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.964703   ( 0.918107   0.918107 )
beta        : -1.68392    ( 1.699   0.281923 )
Epeak [keV] : 72.4890      ( -68.9166 -68.9166 )
Norm@50keV   : 3.94641E-02    ( -0.0239691   495.606 )
------------------------------------------------------------
# Chi-Squared =          67.77 using 59 PHA bins.
# Reduced chi-squared =          1.232 for     55 degrees of freedom 
# Null hypothesis probability =   1.157222e-01
 
Photon flux (15-150 keV)    in 0.96 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Mon May 18 11:13:06 EDT 2009