batgrbproduct Analysis for Trigger=361993

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Sun Sep  6 09:08:20 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger361993/GCN5_download_cron
======================================================================

  Trigger: 00361993      Segment: 000

  BAT Trigger Time: 273876577.856   [s; MET]
      Trigger Stop: 273876578.88   [s; MET]
               UTC: 2009-09-05T20:49:32.795860    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 168.828114597611   Dec: -73.7594919953175  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.79
     Image Trigger?:     NO
     Rate S/N Ratio:     10.5356537528527  [ if not an image trigger ]
     Image S/N Ratio:    5.79

  Flight Position:   [ source = BAT ]
    RA: 168.828114597611   Dec: -73.7594919953175  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 168.805924227868   Dec: -73.8051952896609  [deg; J2000]  
        { 11h 15m 13.4s , -73d 48' 18.7" }
         +/- 4.51488917998455 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.67993150230772 [arcmin] (formal 1-sigma fit error)
    SNR: 3.53108558973198
 
  Angular difference between Flight and Ground position is 2.767295 arcmin
 
  Partial Coding Fraction: 0.2050781    [ including projection effects ]

  Duration
     T90: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     T50: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 1.02399998903275 second)
        Measured from: 2.98023223876953e-08     
                   to: 1.02400001883507     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.021109  -0.020070   0.060517   0.058471
           0.016840   0.017257   0.016325   0.016956 [error]
 Peak      0.021109  -0.020070   0.060517   0.058471
           0.016840   0.017257   0.016325   0.016956 [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 1.59e-09 6.18e-09 2.01e-08 2.17e-07 5.69e-08 2.45e-07   erg/cm2
              Error 3.94e-09 8.02e-09 1.74e-08 5.23e-07 3.89e-08 5.28e-07   erg/cm2
Peak flux Power-law 4.88e-02 1.02e-01 1.66e-01 6.08e-01 4.58e-01 9.25e-01   ph/cm2/s
              Error 1.24e-01 1.36e-01 1.44e-01 1.22e+00 4.41e-01 1.14e+00   ph/cm2/s
 
Fluence   Cutoff-PL 4.79e-10 5.41e-09 2.73e-08 4.59e-08 5.89e-08 7.72e-08   erg/cm2
              Error 3.09e-09 7.21e-09 1.89e-08 2.72e-07 3.77e-08 2.69e-07   erg/cm2
Peak flux Cutoff-PL 4.85e-02 1.01e-01 1.66e-01 6.05e-01 4.58e-01 9.21e-01   ph/cm2/s
              Error 1.24e-01 1.36e-01 1.44e-01 1.32e+00 4.41e-01 1.22e+00   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 5.13e-01 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    0.294    0.860    -      -           3.70e-03 3.84e-03   59.800 57
CPL  -4.987    0.000     100.3   64.6      1.37e-01 1.14e-01   58.190 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.294    0.860    -      -           3.70e-03 3.84e-03   59.800 57
CPL  -4.987    0.000     100.3   64.6      1.37e-01 1.14e-01   58.190 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    1.024    0.000    1.024
T90     1.024    0.000    1.024
T50     1.024    0.000    1.024
Peak    1.024    0.000    1.024

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  168.8059 -73.8052 0.0546   52.5 -171.3       0.1252     3.5  TRIG_00361993       
------------------------------------------
 
Foreground time interval of the image:
  0.000   1.024 (delta_t =   1.024 [sec])
Background time interval of the image:
-60.856  -9.856 (delta_t =  51.000 [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    0.000 sec. to    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.294239     ( -0.294155   1.42608 )
Norm@50keV  : 3.70487E-03    ( -0.00370453   0.00398451 )
------------------------------------------------------------
# Chi-Squared =          59.80 using 59 PHA bins.
# Reduced chi-squared =          1.049 for     57 degrees of freedom 
# Null hypothesis probability =   3.742850e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.457659 ( -0.45766  0.425271 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.68776e-08 ( -3.88146e-08  3.89798e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.98746     (     )
Epeak [keV] : 100.292      ( -30.1499 99.1491 )
Norm@50keV  : 0.136747    ( -0.136746   0.0908707 )
------------------------------------------------------------
# Chi-Squared =          58.19 using 59 PHA bins.
# Reduced chi-squared =          1.039 for     56 degrees of freedom 
# Null hypothesis probability =   3.946312e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.457589 ( -0.457589  0.424852 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.88798e-08 ( -3.73264e-08  3.79813e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.27953   ( 0.423779   0.423779 )
beta        : -6.11533    ( -1.4261   0.29406 )
Epeak [keV] : 102.352      ( -102.706 232.936 )
Norm@50keV   : 8.01692E-02    ( -0.0586906   0.590308 )
------------------------------------------------------------
# Chi-Squared =          58.53 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     55 degrees of freedom 
# Null hypothesis probability =   3.473570e-01
 
Photon flux (15-150 keV)    in 1.024 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    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.294239     ( -0.294155   1.42608 )
Norm@50keV  : 3.70487E-03    ( -0.00370453   0.00398451 )
------------------------------------------------------------
# Chi-Squared =          59.80 using 59 PHA bins.
# Reduced chi-squared =          1.049 for     57 degrees of freedom 
# Null hypothesis probability =   3.742850e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.457659 ( -0.45766  0.425271 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.68776e-08 ( -3.88146e-08  3.89798e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.98746     (     )
Epeak [keV] : 100.292      ( -30.1499 99.1491 )
Norm@50keV  : 0.136747    ( -0.136746   0.0908707 )
------------------------------------------------------------
# Chi-Squared =          58.19 using 59 PHA bins.
# Reduced chi-squared =          1.039 for     56 degrees of freedom 
# Null hypothesis probability =   3.946312e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.457589 ( -0.457589  0.424852 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.88798e-08 ( -3.73264e-08  3.79813e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.27953   ( 0.423779   0.423779 )
beta        : -6.11533    ( -1.4261   0.29406 )
Epeak [keV] : 102.352      ( -102.706 232.936 )
Norm@50keV   : 8.01692E-02    ( -0.0586906   0.590308 )
------------------------------------------------------------
# Chi-Squared =          58.53 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     55 degrees of freedom 
# Null hypothesis probability =   3.473570e-01
 
Photon flux (15-150 keV)    in 1.024 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Sun Sep  6 09:17:56 EDT 2009