batgrbproduct Analysis for Trigger=293924

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Fri Dec 14 19:44:09 EST 2007
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger293924/GCN5_download_cron
======================================================================

  Trigger: 00293924      Segment: 000

  BAT Trigger Time: 213799216.128   [s; MET]
      Trigger Stop: 213799217.152   [s; MET]
               UTC: 2007-10-11T12:40:13.844040    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 8.40009894747049   Dec: 61.0725216897883  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.99
     Image Trigger?:     NO
     Rate S/N Ratio:     16.0934769394311  [ if not an image trigger ]
     Image S/N Ratio:    7.99

  Flight Position:   [ source = BAT ]
    RA: 8.40009894747049   Dec: 61.0725216897883  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 8.39311259630894   Dec: 61.1292294643689  [deg; J2000]  
        { 00h 33m 34.3s , +61d 07' 45.2" }
         +/- 1.33501961516376 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.527442746103215 [arcmin] (formal 1-sigma fit error)
    SNR: 20.1303030601475
    RA  =   0h 33m 34.3s  (8.393113 deg.)
    Dec =  61d  7' 45" (61.129229 deg.)
 
  Angular difference between Flight and Ground position is 3.408492 arcmin
 
  Partial Coding Fraction: 0.3710938    [ including projection effects ]

  Duration
     T90: 65.5640000104904 +/- 18.1911514722849
        Measured from: -4.11199998855591
                   to: 61.4520000219345     [s; relative to TRIGTIME]
     T50: 42.8240000009537 +/- 3.17215194613672
        Measured from: 4.88400000333786
                   to: 47.7080000042915     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 45.9760000109673     
                   to: 46.9760000109673     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -9.47200000286102     
                   to: 93.6200000047684     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.086169   1.211451   1.053594   0.377885
           0.083410   0.084920   0.076011   0.066386 [error]
 Peak      0.057034   0.057322   0.079425   0.016261
           0.009113   0.009771   0.009274   0.007595 [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 3.14e-07 5.87e-07 8.48e-07 2.60e-06 2.41e-06 4.33e-06   erg/cm2
              Error 4.33e-08 4.68e-08 7.66e-08 5.37e-07 1.85e-07 5.81e-07   erg/cm2
Peak flux Power-law 4.88e-01 5.53e-01 4.50e-01 6.10e-01 1.71e+00 2.10e+00   ph/cm2/s
              Error 1.37e-01 9.22e-02 7.54e-02 2.25e-01 2.52e-01 3.05e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.13e-07 5.88e-07 8.49e-07 2.58e-06 2.41e-06 4.36e-06   erg/cm2
              Error 4.33e-08 4.68e-08 7.67e-08 5.33e-07 1.86e-07 5.79e-07   erg/cm2
Peak flux Cutoff-PL 4.87e-01 5.53e-01 4.50e-01 6.06e-01 1.71e+00 2.10e+00   ph/cm2/s
              Error 1.37e-01 9.23e-02 7.55e-02 2.24e-01 2.52e-01 3.04e-01   ph/cm2/s
 
Fluence        Band 3.23e-07 3.03e-05 4.19e-06 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 2.96e-07 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 4.87e-01 5.53e-01 4.50e-01 6.06e-01 1.71e+00 2.10e+00   ph/cm2/s
              Error 1.37e-01 9.23e-02 6.14e-02 2.74e-01 2.52e-01 3.05e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.469    0.135    -      -           2.45e-03 1.74e-04   66.055 57
CPL   1.466    0.135    9992.1 5000.0      2.46e-03 1.75e-04   66.077 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.299    0.263    -      -           1.44e-02 2.02e-03   60.522 57
CPL   1.295    0.265    9999.2 5000.0      1.44e-02 2.03e-03   60.526 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: 54.400000 sec.
T50 in the 50-300 keV band: 41.216000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  103.092   -9.472   93.620
T90    65.564   -4.112   61.452
T50    42.824    4.884   47.708
Peak    1.000   45.976   46.976

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
    8.3931 +61.1292 0.0096   36.5  145.7       4.0967    20.1  TRIG_00293924       
------------------------------------------
 
Foreground time interval of the image:
 -9.472  93.620 (delta_t = 103.092 [sec])
Background time interval of the image:
-239.128  -9.472 (delta_t = 229.656 [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   -9.472 sec. to   93.620 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.46918     ( -0.134715   0.134450 )
Norm@50keV  : 2.452031E-03    ( -1.740823E-04   1.738293E-04) )
------------------------------------------------------------
 Chi-Squared =      66.05489     using    59 PHA bins.
 Reduced chi-squared =      1.158858     for     57 degrees of freedom
 Null hypothesis probability = 0.193
 
Photon flux (15-150 keV)    in 103.1 sec: 0.303643 ( -0.022921  0.023061 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.41082e-06 ( -1.85064e-07  1.85817e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -9.472 sec. to   93.620 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.46641     ( -0.135583   0.135338 )
Epeak [keV] : 9992.12      ( -9992.11 7.87695 )
Norm@50keV  : 2.456123E-03    ( -1.710975E-04   1.783951E-04) )
------------------------------------------------------------
 Chi-Squared =      66.07748     using    59 PHA bins.
 Reduced chi-squared =      1.179955     for     56 degrees of freedom
 Null hypothesis probability = 0.168
 
Photon flux (15-150 keV)    in 103.1 sec: 0.303516 ( -0.022912  0.023052 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.41109e-06 ( -1.85003e-07  1.86281e-07 ) ergs/cm2
 
Band function
Time interval is from   -9.472 sec. to   93.620 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.10120   ( -8.81880   3.93986 )
beta        : -1.46826    ( -8.53144   0.134199 )
Epeak [keV] : 48.7378      ( -48.5611 3546.13 )
Norm@50keV   : 4.968845E-03    ( -2.173098E-03   0.352396 )
------------------------------------------------------------
 Chi-Squared =      66.07036     using    59 PHA bins.
 Reduced chi-squared =      1.201279     for     55 degrees of freedom
 Null hypothesis probability = 0.146
 
Photon flux (15-150 keV)    in 103.1 sec: 0.302448 ( -0.021822  0.021541 ) 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   45.976 sec. to   46.976 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29915     ( -0.264070   0.262785 )
Norm@50keV  : 1.436646E-02    ( -2.018198E-03   2.017277E-03) )
------------------------------------------------------------
 Chi-Squared =      60.52238     using    59 PHA bins.
 Reduced chi-squared =      1.061796     for     57 degrees of freedom
 Null hypothesis probability = 0.350
 
Photon flux (15-150 keV)    in 1.000 sec: 1.71368 ( -0.25154  0.25252 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.41995e-07 ( -2.2059e-08  2.2245e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   45.976 sec. to   46.976 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29484     ( -0.265765   0.264744 )
Epeak [keV] : 9999.24      ( -9999.23 0.762695 )
Norm@50keV  : 1.442658E-02    ( -2.026147E-03   2.027721E-03) )
------------------------------------------------------------
 Chi-Squared =      60.52557     using    59 PHA bins.
 Reduced chi-squared =      1.080814     for     56 degrees of freedom
 Null hypothesis probability = 0.316
 
Photon flux (15-150 keV)    in 1.000 sec: 1.71306 ( -0.25147  0.25243 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.42082e-07 ( -2.2105e-08  2.2184e-08 ) ergs/cm2
 
Band function
Time interval is from   45.976 sec. to   46.976 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.25450   ( -7.81979   1.79731 )
beta        : -9.07504    ( -0.263057   0.263997 )
Epeak [keV] : 978.945      ( -978.845 9021.05 )
Norm@50keV   : 1.503915E-02    ( -0.274273   0.274170 )
------------------------------------------------------------
 Chi-Squared =      60.56337     using    59 PHA bins.
 Reduced chi-squared =      1.101152     for     55 degrees of freedom
 Null hypothesis probability = 0.282
 
Photon flux (15-150 keV)    in 1.000 sec: 1.71301 ( -0.25142  0.25246 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.42019e-07 ( -2.2152e-08  2.2118e-08 ) ergs/cm2
 
Plot creation:
Fri Dec 14 19:57:56 EST 2007