batgrbproduct Analysis for Trigger=380311

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Tue Dec 22 07:09:00 EST 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger380311/GCN5_download_cron
======================================================================

  Trigger: 00380311      Segment: 000

  BAT Trigger Time: 283121577.664   [s; MET]
      Trigger Stop: 283121578.688   [s; MET]
               UTC: 2009-12-21T20:52:52.295660    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 55.7537241011415   Dec: 23.2118519779555  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.54
     Image Trigger?:     NO
     Rate S/N Ratio:     9.38083151964686  [ if not an image trigger ]
     Image S/N Ratio:    7.54

  Flight Position:   [ source = BAT ]
    RA: 55.7537241011415   Dec: 23.2118519779555  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 55.7982026312823   Dec: 23.2430988430124  [deg; J2000]  
        { 03h 43m 11.6s , +23d 14' 35.2" }
         +/- 1.354679660814 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.429980851084277 [arcmin] (formal 1-sigma fit error)
    SNR: 19.7142547927969
 
  Angular difference between Flight and Ground position is 3.086940 arcmin
 
  Partial Coding Fraction: 0.625    [ including projection effects ]

  Duration
     T90: 68.5079999566078 +/- 5.51264582654625
        Measured from: -33.3479998707771
                   to: 35.1600000858307     [s; relative to TRIGTIME]
     T50: 17.7199999690056 +/- 1.18400000559317
        Measured from: 10.5040001273155
                   to: 28.2240000963211     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 20.6960000395775     
                   to: 21.6960000395775     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -43.5799999833107     
                   to: 41.0840000510216     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.710439   3.394731   2.442030   0.630412
           0.075493   0.076520   0.063982   0.052698 [error]
 Peak      0.088529   0.114857   0.128738   0.046719
           0.009203   0.009748   0.008795   0.006983 [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 8.44e-07 1.47e-06 1.95e-06 5.28e-06 5.68e-06 9.54e-06   erg/cm2
              Error 4.86e-08 4.75e-08 6.82e-08 4.33e-07 1.64e-07 4.65e-07   erg/cm2
Peak flux Power-law 7.70e-01 9.44e-01 8.40e-01 1.29e+00 3.00e+00 3.84e+00   ph/cm2/s
              Error 1.20e-01 8.80e-02 7.14e-02 2.41e-01 2.37e-01 3.05e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.43e-07 1.47e-06 1.95e-06 5.24e-06 5.68e-06 9.50e-06   erg/cm2
              Error 4.86e-08 4.76e-08 6.83e-08 4.30e-07 1.64e-07 3.60e-07   erg/cm2
Peak flux Cutoff-PL 7.69e-01 9.44e-01 8.40e-01 1.28e+00 3.00e+00 3.83e+00   ph/cm2/s
              Error 1.20e-01 8.81e-02 7.15e-02 2.39e-01 2.37e-01 3.04e-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    1.591    0.055    -      -           7.17e-03 1.99e-04   30.280 57
CPL   1.592    0.092    9999.4    0.0      7.16e-03 5.25e-04   30.350 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.169    0.137    -      -           2.57e-02 1.94e-03   44.380 57
CPL   1.164    0.330    9995.0    0.0      2.58e-02 1.14e-02   44.370 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: 31.744000 sec.
T50 in the 50-300 keV band: 13.504000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   84.664  -43.580   41.084
T90    68.508  -33.348   35.160
T50    17.720   10.504   28.224
Peak    1.000   20.696   21.696

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   55.7982 +23.2431 0.0097   27.3  -57.0       2.4748    19.7  TRIG_00380311       
------------------------------------------
 
Foreground time interval of the image:
-43.580  10.837 (delta_t =  54.417 [sec])
Background time interval of the image:
-201.263 -43.580 (delta_t = 157.683 [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  -43.580 sec. to   41.084 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.59110     ( -0.0553198   0.0553501 )
Norm@50keV  : 7.16626E-03    ( -0.000198694   0.000198675 )
------------------------------------------------------------
# Chi-Squared =          30.28 using 59 PHA bins.
# Reduced chi-squared =         0.5313 for     57 degrees of freedom 
# Null hypothesis probability =   9.986048e-01
 
Photon flux (15-150 keV)    in 84.66 sec: 0.918379 ( -0.0290805  0.029206 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.68013e-06 ( -1.64025e-07  1.64467e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -43.580 sec. to   41.084 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.59156     ( -0.131037   0.0534655 )
Epeak [keV] : 9999.36      ( -9999.97 -9999.97 )
Norm@50keV  : 7.16434E-03    ( -0.000198749   0.000852127 )
------------------------------------------------------------
# Chi-Squared =          30.35 using 59 PHA bins.
# Reduced chi-squared =         0.5420 for     56 degrees of freedom 
# Null hypothesis probability =   9.979807e-01
 
Photon flux (15-150 keV)    in 84.66 sec: 0.917831 ( -0.029061  0.029192 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.68051e-06 ( -1.64063e-07  1.64503e-07 ) ergs/cm2
 
Band function
Time interval is from  -43.580 sec. to   41.084 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.16106   ( 1.14764   1.14764 )
beta        : -1.59389    ( -0.0638154   0.0566605 )
Epeak [keV] : 44.3263      ( -42.6372 -42.6372 )
Norm@50keV   : 1.55000E-02    ( -0.0169389   92.5617 )
------------------------------------------------------------
# Chi-Squared =          30.14 using 59 PHA bins.
# Reduced chi-squared =         0.5479 for     55 degrees of freedom 
# Null hypothesis probability =   9.974561e-01
 
Photon flux (15-150 keV)    in 84.66 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   20.696 sec. to   21.696 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16891     ( -0.137951   0.135867 )
Norm@50keV  : 2.56743E-02    ( -0.00194262   0.00194009 )
------------------------------------------------------------
# Chi-Squared =          44.38 using 59 PHA bins.
# Reduced chi-squared =         0.7785 for     57 degrees of freedom 
# Null hypothesis probability =   8.886084e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.00111 ( -0.236959  0.237764 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.62819e-07 ( -2.159e-08  2.17208e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   20.696 sec. to   21.696 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16422     ( -0.496886   0.16275 )
Epeak [keV] : 9994.96      (   )
Norm@50keV  : 2.58028E-02    ( -0.00194562   0.0208835 )
------------------------------------------------------------
# Chi-Squared =          44.37 using 59 PHA bins.
# Reduced chi-squared =         0.7924 for     56 degrees of freedom 
# Null hypothesis probability =   8.688949e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.00011 ( -0.23689  0.23767 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.6249e-07 ( -1.1364e-08  2.1971e-08 ) ergs/cm2
 
Band function
Time interval is from   20.696 sec. to   21.696 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.94192   ( -34.8734   -34.8734 )
beta        : -1.17154    ( -0.144851   0.136028 )
Epeak [keV] : 20.4591      ( -20.4463 6.57445 )
Norm@50keV   : 5959.27    ( -4592.48   202499 )
------------------------------------------------------------
# Chi-Squared =          44.30 using 59 PHA bins.
# Reduced chi-squared =         0.8055 for     55 degrees of freedom 
# Null hypothesis probability =   8.485092e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Tue Dec 22 07:55:28 EST 2009