batgrbproduct Analysis for Trigger=374869

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Wed Nov  4 21:20:56 EST 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger374869/GCN5_download_cron
======================================================================

  Trigger: 00374869      Segment: 000

  BAT Trigger Time: 279012256   [s; MET]
      Trigger Stop: 279012576   [s; MET]
               UTC: 2009-11-04T07:24:10.769860    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 274.665356735406   Dec: -17.0892267689427  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.34
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.34

  Flight Position:   [ source = BAT ]
    RA: 274.665356735406   Dec: -17.0892267689427  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 274.656162495532   Dec: -17.0662871571381  [deg; J2000]  
        { 18h 18m 37.5s , -17d 03' 58.6" }
         +/- 2.98604168327142 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.00407044796246 [arcmin] (formal 1-sigma fit error)
    SNR: 6.37396978045781
 
  Angular difference between Flight and Ground position is 1.473937 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 320 +/- 
        Measured from: 0
                   to: 320     [s; relative to TRIGTIME]
     T50: 320 +/- 
        Measured from: 0
                   to: 320     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 320 second)
        Measured from: 0     
                   to: 320     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 320     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.949675   0.638084   0.049945   0.155380
           0.102607   0.098379   0.083660   0.072800 [error]
 Peak      0.949675   0.638084   0.049945   0.155380
           0.102607   0.098379   0.083660   0.072800 [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 2.55e-07 2.42e-07 1.60e-07 1.64e-07 7.23e-07 8.21e-07   erg/cm2
              Error 4.59e-08 4.66e-08 6.09e-08 1.15e-07 1.49e-07 2.15e-07   erg/cm2
Peak flux Power-law 2.63e-02 1.39e-02 4.61e-03 1.97e-03 4.59e-02 4.68e-02   ph/cm2/s
              Error 4.83e-03 2.58e-03 1.70e-03 1.77e-03 7.23e-03 7.48e-03   ph/cm2/s
 
Fluence   Cutoff-PL 2.48e-07 2.95e-07 5.13e-08 4.56e-10 5.95e-07 5.95e-07   erg/cm2
              Error 5.17e-08 6.51e-08 6.56e-08 9.53e-09 1.12e-07 1.12e-07   erg/cm2
Peak flux Cutoff-PL 2.49e-02 1.73e-02 1.69e-03 8.16e-06 4.39e-02 4.39e-02   ph/cm2/s
              Error 5.46e-03 3.67e-03 1.99e-03 1.53e-04 6.94e-03 6.94e-03   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    2.597    0.348    -      -           2.20e-04 6.25e-05   64.840 57
CPL   2.558    0.351    9999.4    0.0      2.26e-04 0.00e+00   64.880 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.597    0.348    -      -           2.20e-04 6.25e-05   64.840 57
CPL   2.558    0.351    9999.4    0.0      2.26e-04 0.00e+00   64.880 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  320.000    0.000  320.000
T90   320.000    0.000  320.000
T50   320.000    0.000  320.000
Peak  320.000    0.000  320.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  274.6562 -17.0663 0.0301   14.8 -144.5       1.6203     6.4  TRIG_00374869       
------------------------------------------
 
Foreground time interval of the image:
  0.000 320.000 (delta_t = 320.000 [sec])
Background time interval of the image:

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  320.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.59720     ( -0.325381   0.370683 )
Norm@50keV  : 2.19791E-04    ( -6.16554e-05   6.33228e-05 )
------------------------------------------------------------
# Chi-Squared =          64.84 using 59 PHA bins.
# Reduced chi-squared =          1.138 for     57 degrees of freedom 
# Null hypothesis probability =   2.222259e-01
 
Photon flux (15-150 keV)    in 320 sec: 4.58817E-02 ( -0.00722934  0.00723853 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.2329e-07 ( -1.43784e-07  1.5343e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.55824     ( -0.289342   0.413195 )
Epeak [keV] : 9999.36      (   )
Norm@50keV  : 2.25710E-04    (     )
------------------------------------------------------------
# Chi-Squared =          64.88 using 59 PHA bins.
# Reduced chi-squared =          1.159 for     56 degrees of freedom 
# Null hypothesis probability =   1.946162e-01
 
Photon flux (15-150 keV)    in 320 sec: 4.39275E-02 ( -0.0069195  0.0069684 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.94861e-07 ( -1.04352e-07  1.19466e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  320.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.02264   ( -2.31294   3.0326 )
beta        : -5.42677    ( 5.15014   2.24664 )
Epeak [keV] : 25.4520      ( -5.02931 4.28173 )
Norm@50keV   : 6.69810E-02    ( -0.068108   5.86403 )
------------------------------------------------------------
# Chi-Squared =          58.00 using 59 PHA bins.
# Reduced chi-squared =          1.055 for     55 degrees of freedom 
# Null hypothesis probability =   3.653042e-01
 
Photon flux (15-150 keV)    in 320 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  320.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.59720     ( -0.325381   0.370683 )
Norm@50keV  : 2.19791E-04    ( -6.16554e-05   6.33228e-05 )
------------------------------------------------------------
# Chi-Squared =          64.84 using 59 PHA bins.
# Reduced chi-squared =          1.138 for     57 degrees of freedom 
# Null hypothesis probability =   2.222259e-01
 
Photon flux (15-150 keV)    in 320 sec: 4.58817E-02 ( -0.00722934  0.00723853 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.2329e-07 ( -1.43784e-07  1.5343e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.55824     ( -0.289342   0.413195 )
Epeak [keV] : 9999.36      (   )
Norm@50keV  : 2.25710E-04    (     )
------------------------------------------------------------
# Chi-Squared =          64.88 using 59 PHA bins.
# Reduced chi-squared =          1.159 for     56 degrees of freedom 
# Null hypothesis probability =   1.946162e-01
 
Photon flux (15-150 keV)    in 320 sec: 4.39275E-02 ( -0.0069195  0.0069684 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.94861e-07 ( -1.04352e-07  1.19466e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  320.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.02264   ( -2.31294   3.0326 )
beta        : -5.42677    ( 5.15014   2.24664 )
Epeak [keV] : 25.4520      ( -5.00611 4.28173 )
Norm@50keV   : 6.69810E-02    ( -0.068108   5.86403 )
------------------------------------------------------------
# Chi-Squared =          58.00 using 59 PHA bins.
# Reduced chi-squared =          1.055 for     55 degrees of freedom 
# Null hypothesis probability =   3.653042e-01
 
Photon flux (15-150 keV)    in 320 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Wed Nov  4 21:39:04 EST 2009