batgrbproduct Analysis for Trigger=219237

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Thu Jan  3 16:36:37 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger219237/SDC
======================================================================

  Trigger: 00219237      Segment: 000

  BAT Trigger Time: 174633032   [s; MET]
      Trigger Stop: 174634536   [s; MET]
               UTC: 2006-07-15T05:10:30.682280    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 166.094509062147   Dec: 38.171736707798  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.5
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.5

  Flight Position:   [ source = BAT ]
    RA: 166.094509062147   Dec: 38.171736707798  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 166.140308587934   Dec: 38.2992352473045  [deg; J2000]  
        { 11h 04m 33.7s , +38d 17' 57.2" }
         +/- 4.62488614654475 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.34361312263645 [arcmin] (formal 1-sigma fit error)
    SNR: 3.41172508475616
    RA  =  11h  4m 33.7s  (166.140309 deg.)
    Dec =  38d 17' 57" (38.299235 deg.)
 
  Angular difference between Flight and Ground position is 7.948591 arcmin
 
  Partial Coding Fraction: 0.875    [ including projection effects ]

  Duration
     T90: 1504 +/- 
        Measured from: 0
                   to: 1504     [s; relative to TRIGTIME]
     T50: 1504 +/- 
        Measured from: 0
                   to: 1504     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 1504 second)
        Measured from: 0     
                   to: 1504     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 1504     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.467982   0.150975   0.010838   0.003218
           0.100563   0.101800   0.090785   0.081730 [error]
 Peak      0.467982   0.150975   0.010838   0.003218
           0.100563   0.101800   0.090785   0.081730 [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 1.56e-07 6.10e-08 1.39e-08 3.81e-09 2.33e-07 2.35e-07   erg/cm2
              Error 4.68e-08 4.72e-08 2.56e-08 1.69e-08 1.06e-07 1.13e-07   erg/cm2
Peak flux Power-law 1.21e-02 2.71e-03 3.09e-04 3.89e-05 1.51e-02 1.51e-02   ph/cm2/s
              Error 3.62e-03 2.44e-03 5.48e-04 1.56e-04 5.18e-03 5.20e-03   ph/cm2/s
 
Fluence   Cutoff-PL 1.64e-07 6.05e-08 3.42e-09 1.32e-11 2.29e-07 2.29e-07   erg/cm2
              Error 5.13e-08 5.93e-08 2.35e-08 2.33e-09 7.41e-08 1.08e-07   erg/cm2
Peak flux Cutoff-PL 1.21e-02 2.71e-03 3.08e-04 3.86e-05 1.51e-02 1.51e-02   ph/cm2/s
              Error 3.61e-03 2.44e-03 5.47e-04 1.55e-04 5.18e-03 5.20e-03   ph/cm2/s
 
Fluence        Band 1.54e-07 6.24e-08 1.47e-08 4.22e-09 2.35e-07 2.25e-07   erg/cm2
              Error 4.61e-08 3.31e-08 9.61e-09 3.67e-09 9.07e-08 0.00e+00   erg/cm2
Peak flux      Band 1.21e-02 2.71e-03 3.08e-04 1.62e-05 1.54e-02 1.51e-02   ph/cm2/s
              Error 3.84e-03 2.44e-03 5.47e-04 4.72e-03 5.20e-03 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    4.340    1.416    -      -           1.76e-05 3.04e-05   80.557 57
CPL   1.468    2.637       4.9   19.4      2.48e-03 1.85e+00   80.074  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    4.340    1.416    -      -           1.76e-05 3.04e-05   80.557 57
CPL   1.468    2.222       4.9   19.4      2.48e-03 1.85e+00   80.074  0
 
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 1504.000    0.000 1504.000
T90  1504.000    0.000 1504.000
T50  1504.000    0.000 1504.000
Peak 1504.000    0.000 1504.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  166.1403 +38.2992 0.0562   14.6  -89.3       0.7496     3.4  TRIG_00219237       
------------------------------------------
 
Foreground time interval of the image:
465.000 483.053 (delta_t =  18.053 [sec])
491.000 543.021 (delta_t =  52.021 [sec])
594.000 963.065 (delta_t = 369.065 [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
Multiple GTIs in the spectrum
tstart tstop
465.000000 483.052700
491.000000 543.020600
594.000000 963.065300
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.33982     ( -1.28234   1.54973 )
Norm@50keV  : 1.764431E-05    ( -1.764431E-05   4.324864E-05) )
------------------------------------------------------------
 Chi-Squared =      80.55741     using    59 PHA bins.
 Reduced chi-squared =      1.413288     for     57 degrees of freedom
 Null hypothesis probability = 2.168E-02
 
Photon flux (15-150 keV)    in 439.1 sec: 1.513803E-02 ( -0.00514147  0.00521966 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.32988e-07 ( -9.5427e-08  1.17325e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
465.000000 483.052700
491.000000 543.020600
594.000000 963.065300
Photon index: 1.46784     ( -3.93309   1.34071 )
Epeak [keV] : 4.89570      ( -4.88570 33.9822 )
Norm@50keV  : 2.479727E-03    ( -2.479727E-03   3.70297 )
------------------------------------------------------------
 Chi-Squared =      80.07426     using    59 PHA bins.
 but latest trial  -2.89638     gives Chi-Squared =   12.7070
 but latest trial   35.7683     gives Chi-Squared =   14.3597
 but latest trial   3.70537     gives Chi-Squared =   2.73535
 Reduced chi-squared =      1.429897     for     56 degrees of freedom
 Null hypothesis probability = 1.908E-02
 
Photon flux (15-150 keV)    in 439.1 sec: 1.512893E-02 ( -0.00514091  0.00521821 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.28879e-07 ( -8.62928e-08  6.18889e-08 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
465.000000 483.052700
491.000000 543.020600
594.000000 963.065300
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.85675   ( -7.60012   0.271563 )
beta        : -7.91212    ( -1.72466   14.1332 )
Epeak [keV] : 3.67132      ( -3.57132 9996.33 )
Norm@50keV   : 3.815751E-04    ( -4.197118E-02   2.72408 )
------------------------------------------------------------
 Chi-Squared =      83.75571     using    59 PHA bins.
 Reduced chi-squared =      1.522831     for     55 degrees of freedom
 Null hypothesis probability = 7.492E-03
 
Photon flux (15-150 keV)    in 439.1 sec: 1.542693E-02 ( -0.00484968  0.00458368 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.34606e-07 ( -7.01734e-08  1.11146e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from  594.000 sec. to  963.065 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.33982     ( -1.28234   1.54973 )
Norm@50keV  : 1.764431E-05    ( -1.764431E-05   4.324864E-05) )
------------------------------------------------------------
 Chi-Squared =      80.55741     using    59 PHA bins.
 Reduced chi-squared =      1.413288     for     57 degrees of freedom
 Null hypothesis probability = 2.168E-02
 
Photon flux (15-150 keV)    in 439.1 sec: 1.513803E-02 ( -0.00514147  0.00521966 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.32988e-07 ( -9.5427e-08  1.17325e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  594.000 sec. to  963.065 sec.
Photon index: 1.46784     ( -3.93309   0.511370 )
Epeak [keV] : 4.89570      ( -4.88570 33.9822 )
Norm@50keV  : 2.479727E-03    ( -2.479727E-03   3.70297 )
------------------------------------------------------------
 Chi-Squared =      80.07426     using    59 PHA bins.
 but latest trial  -2.89638     gives Chi-Squared =   12.7070
 but latest trial   35.7683     gives Chi-Squared =   14.3597
 but latest trial   3.70537     gives Chi-Squared =   2.73535
 Reduced chi-squared =      1.429897     for     56 degrees of freedom
 Null hypothesis probability = 1.908E-02
 
Photon flux (15-150 keV)    in 439.1 sec: 1.512893E-02 ( -0.00514091  0.00521821 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.28879e-07 ( -8.62928e-08  6.18889e-08 ) ergs/cm2
 
Band function
Time interval is from  594.000 sec. to  963.065 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.85675   ( -7.60012   0.271563 )
beta        : -7.91212    ( -1.72466   14.1332 )
Epeak [keV] : 3.67132      ( -3.57132 9996.33 )
Norm@50keV   : 3.815751E-04    ( -4.197118E-02   2.72408 )
------------------------------------------------------------
 Chi-Squared =      83.75571     using    59 PHA bins.
 Reduced chi-squared =      1.522831     for     55 degrees of freedom
 Null hypothesis probability = 7.492E-03
 
Photon flux (15-150 keV)    in 439.1 sec: 1.542693E-02 ( -0.00484968  0.00458368 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.34606e-07 ( -7.01734e-08  1.11146e-07 ) ergs/cm2
 
Plot creation:
Thu Jan  3 16:58:00 EST 2008