batgrbproduct Analysis for Trigger=293707

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Fri Dec 14 19:02:33 EST 2007
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger293707/GCN5_download_cron
======================================================================

  Trigger: 00293707      Segment: 000

  BAT Trigger Time: 213680475.136   [s; MET]
      Trigger Stop: 213680479.232   [s; MET]
               UTC: 2007-10-10T03:41:12.855120    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 288.100630766172   Dec: -32.3786069237812  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.17
     Image Trigger?:     NO
     Rate S/N Ratio:     9.1104335791443  [ if not an image trigger ]
     Image S/N Ratio:    7.17

  Flight Position:   [ source = BAT ]
    RA: 288.100630766172   Dec: -32.3786069237812  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 288.039982859877   Dec: -32.3882563729894  [deg; J2000]  
        { 19h 12m 09.6s , -32d 23' 17.7" }
         +/- 2.53335679616107 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.997081328459292 [arcmin] (formal 1-sigma fit error)
    SNR: 8.0613781618622
    RA  =  19h 12m  9.6s  (288.039983 deg.)
    Dec = -32d 23' 18" (-32.388256 deg.)
 
  Angular difference between Flight and Ground position is 3.127032 arcmin
 
  Partial Coding Fraction: 0.4296875    [ including projection effects ]

  Duration
     T90: 6.19600000977516 +/- 1.63951822461446
        Measured from: -0.980000019073486
                   to: 5.21599999070168     [s; relative to TRIGTIME]
     T50: 2.70800000429153 +/- 1.62721970953392
        Measured from: 0.824000000953674
                   to: 3.53200000524521     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.803999990224838     
                   to: 1.80399999022484     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.14399999380112     
                   to: 5.90000000596046     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.130203   0.148020   0.063195  -0.011839
           0.024152   0.023666   0.021041   0.018623 [error]
 Peak      0.039425   0.025656   0.016726   0.005056
           0.009169   0.009055   0.008080   0.007175 [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 5.52e-08 6.34e-08 5.24e-08 7.27e-08 1.97e-07 2.46e-07   erg/cm2
              Error 1.37e-08 1.25e-08 1.86e-08 4.97e-08 4.42e-08 7.41e-08   erg/cm2
Peak flux Power-law 4.81e-01 2.78e-01 1.02e-01 4.94e-02 8.88e-01 9.11e-01   ph/cm2/s
              Error 1.93e-01 9.28e-02 8.71e-02 6.98e-02 2.57e-01 2.65e-01   ph/cm2/s
 
Fluence   Cutoff-PL 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 Cutoff-PL 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
 
Fluence        Band 4.63e-08 7.58e-08 5.15e-08 1.18e-08 1.84e-07 1.85e-07   erg/cm2
              Error 1.29e-08 1.30e-08 1.01e-08 3.43e-08 3.43e-08 8.56e-08   erg/cm2
Peak flux      Band 4.81e-01 8.83e-01 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 2.62e-01 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    2.276    0.369    -      -           2.94e-03 7.75e-04   78.932 57
CPL   0.687    0.000      35.6    0.0      2.32e-02 0.00e+00   75.746 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.448    0.797    -      -           4.67e-03 2.41e-03   71.763 57
CPL   1.992    0.000       1.0    0.0      7.69e-03 0.00e+00   72.275 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    7.044   -1.144    5.900
T90     6.196   -0.980    5.216
T50     2.708    0.824    3.532
Peak    1.000    0.804    1.804

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  288.0400 -32.3883 0.0238   45.3 -167.6       0.3642     8.1  TRIG_00293707       
------------------------------------------
 
Foreground time interval of the image:
 -1.144   5.900 (delta_t =   7.044 [sec])
Background time interval of the image:
-239.136  -1.144 (delta_t = 237.992 [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   -1.144 sec. to    5.900 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.27613     ( -0.342611   0.395994 )
Norm@50keV  : 2.941367E-03    ( -7.879869E-04   7.618254E-04) )
------------------------------------------------------------
 Chi-Squared =      78.93166     using    59 PHA bins.
 Reduced chi-squared =      1.384766     for     57 degrees of freedom
 Null hypothesis probability = 2.884E-02
 
Photon flux (15-150 keV)    in 7.044 sec: 0.507401 ( -0.096671  0.096729 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.97243e-07 ( -4.34608e-08  4.48865e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.144 sec. to    5.900 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.686872     (     )
Epeak [keV] : 35.5683      (   )
Norm@50keV  : 2.321964E-02    (     )
------------------------------------------------------------
 Chi-Squared =      75.74598     using    59 PHA bins.
 Reduced chi-squared =      1.352607     for     56 degrees of freedom
 Null hypothesis probability = 4.056E-02
 
Photon flux (15-150 keV)    in 7.044 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   -1.144 sec. to    5.900 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.859474   ( -1.44170   2.24744 )
beta        : -9.21121    ( -0.788795   6.86216 )
Epeak [keV] : 34.5180      ( -17.2090 14.9705 )
Norm@50keV   : 1.874459E-02    ( -1.874459E-02   0.337096 )
------------------------------------------------------------
 Chi-Squared =      75.77435     using    59 PHA bins.
 Reduced chi-squared =      1.377715     for     55 degrees of freedom
 Null hypothesis probability = 3.311E-02
 
Photon flux (15-150 keV)    in 7.044 sec: 0.485342 ( -0.098747  0.096952 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.84195e-07 ( -3.425e-08  3.42726e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.804 sec. to    1.804 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.44786     ( -0.643005   0.951899 )
Norm@50keV  : 4.665384E-03    ( -2.564643E-03   2.253736E-03) )
------------------------------------------------------------
 Chi-Squared =      71.76306     using    59 PHA bins.
 Reduced chi-squared =      1.259001     for     57 degrees of freedom
 Null hypothesis probability = 9.014E-02
 
Photon flux (15-150 keV)    in 1.000 sec: 0.888078 ( -0.256782  0.256782 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.60044e-08 ( -1.69653e-08  1.80115e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.804 sec. to    1.804 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99232     (     )
Epeak [keV] : 0.990491      (   )
Norm@50keV  : 7.688593E-03    (     )
------------------------------------------------------------
 Chi-Squared =      72.27480     using    59 PHA bins.
 Reduced chi-squared =      1.290622     for     56 degrees of freedom
 Null hypothesis probability = 7.057E-02
 
Photon flux (15-150 keV)    in 1.000 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.804 sec. to    1.804 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.63729   ( -7.96271   7.03729 )
beta        : -2.26581    ( -0.952105   0.642835 )
Epeak [keV] : 2.71893      ( -0.656985 9999.24 )
Norm@50keV   : 4.257118E-02    ( -0.310093   0.306333 )
------------------------------------------------------------
 Chi-Squared =      71.94632     using    59 PHA bins.
 Reduced chi-squared =      1.308115     for     55 degrees of freedom
 Null hypothesis probability = 6.220E-02
 
Photon flux (15-150 keV)    in 1.000 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Fri Dec 14 19:23:32 EST 2007