batgrbproduct Analysis for Trigger=359951

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Fri Aug 14 09:47:02 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger359951/GCN5_download_cron
======================================================================

  Trigger: 00359951      Segment: 000

  BAT Trigger Time: 271903944   [s; MET]
      Trigger Stop: 271904032   [s; MET]
               UTC: 2009-08-14T00:52:19.004460    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 239.610943588386   Dec: 25.5991346877481  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.01
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    10.01

  Flight Position:   [ source = BAT ]
    RA: 239.610943588386   Dec: 25.5991346877481  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 239.613365218129   Dec: 25.5858329307728  [deg; J2000]  
        { 15h 58m 27.2s , +25d 35' 09.0" }
         +/- 2.02715637030108 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.06943838439753 [arcmin] (formal 1-sigma fit error)
    SNR: 11.0842936337203
 
  Angular difference between Flight and Ground position is 0.808792 arcmin
 
  Partial Coding Fraction: 0.3789062    [ including projection effects ]

  Duration
     T90: 79.8720000386238 +/- 7.84532471063086
        Measured from: -13.447999894619
                   to: 66.4240001440048     [s; relative to TRIGTIME]
     T50: 44.688000023365 +/- 9.9002771678288
        Measured from: -2.15199989080429
                   to: 42.5360001325607     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -12.6759999990463     
                   to: -11.6759999990463     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -16.3759999871254     
                   to: 73.6240000128746     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.775734   0.915988   0.527190   0.016695
           0.079312   0.082243   0.072958   0.063594 [error]
 Peak      0.014242   0.016252   0.031236   0.011853
           0.008103   0.008771   0.008208   0.006895 [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 2.43e-07 3.69e-07 4.20e-07 9.12e-07 1.30e-06 1.94e-06   erg/cm2
              Error 3.71e-08 3.82e-08 6.94e-08 3.02e-07 1.62e-07 3.73e-07   erg/cm2
Peak flux Power-law 8.06e-02 1.45e-01 2.01e-01 5.78e-01 5.78e-01 1.00e+00   ph/cm2/s
              Error 7.36e-02 1.13e-01 6.02e-02 4.51e-01 1.96e-01 4.09e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.24e-07 4.04e-07 4.18e-07 2.91e-07 1.34e-06 0.00e+00   erg/cm2
              Error 4.25e-08 5.20e-08 7.86e-08 4.42e-07 0.00e+00 0.00e+00   erg/cm2
Peak flux Cutoff-PL 8.03e-02 1.45e-01 2.01e-01 5.74e-01 5.78e-01 1.00e+00   ph/cm2/s
              Error 7.35e-02 1.13e-01 6.02e-02 4.49e-01 1.96e-01 4.07e-01   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    1.813    0.187    -      -           1.58e-03 1.91e-04   43.910 57
CPL   0.995    0.825      54.1  148.2      4.48e-03 6.61e-03   40.980 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.532    0.704    -      -           4.90e-03 1.98e-03   60.550 57
CPL   0.550    0.711    9999.4    0.0      4.98e-03 0.00e+00   60.560 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: 8.768000 sec.
T50 in the 50-300 keV band: 5.568000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   90.000  -16.376   73.624
T90    79.872  -13.448   66.424
T50    44.688   -2.152   42.536
Peak    1.000  -12.676  -11.676

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  239.6134 +25.5858 0.0173   30.2   73.4       1.9998    11.1  TRIG_00359951       
------------------------------------------
 
Foreground time interval of the image:
-16.376  73.624 (delta_t =  90.000 [sec])
Background time interval of the image:
-239.000 -16.376 (delta_t = 222.624 [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  -16.376 sec. to   73.624 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.81344     ( -0.182849   0.190719 )
Norm@50keV  : 1.57548E-03    ( -0.00019304   0.000189448 )
------------------------------------------------------------
# Chi-Squared =          43.91 using 59 PHA bins.
# Reduced chi-squared =         0.7704 for     57 degrees of freedom 
# Null hypothesis probability =   8.981387e-01
 
Photon flux (15-150 keV)    in 90 sec: 0.218239 ( -0.0226964  0.0227036 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.30477e-06 ( -1.60494e-07  1.63458e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -16.376 sec. to   73.624 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.994704     ( -0.854648   0.796123 )
Epeak [keV] : 54.1208      ( -12.5528 283.889 )
Norm@50keV  : 4.48326E-03    ( -0.00442854   0.00879511 )
------------------------------------------------------------
# Chi-Squared =          40.98 using 59 PHA bins.
# Reduced chi-squared =         0.7317 for     56 degrees of freedom 
# Null hypothesis probability =   9.340233e-01
 
Photon flux (15-150 keV)    in 90 sec: 0.212007 ( -0.023508  0.023496 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from  -16.376 sec. to   73.624 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.20780   ( -0.446637   0.840183 )
beta        : -9.37151    ( 9.99977   19.9998 )
Epeak [keV] : 58.3257      ( -16.7775 460.4 )
Norm@50keV   : 3.40818E-03    ( -0.00341976   0.00134693 )
------------------------------------------------------------
# Chi-Squared =          41.07 using 59 PHA bins.
# Reduced chi-squared =         0.7466 for     55 degrees of freedom 
# Null hypothesis probability =   9.186356e-01
 
Photon flux (15-150 keV)    in 90 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  -12.680 sec. to  -11.672 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.532036     ( -0.793245   0.614722 )
Norm@50keV  : 4.90464E-03    ( -0.00211405   0.00185111 )
------------------------------------------------------------
# Chi-Squared =          60.55 using 59 PHA bins.
# Reduced chi-squared =          1.062 for     57 degrees of freedom 
# Null hypothesis probability =   3.489388e-01
 
Photon flux (15-150 keV)    in 1.008 sec: 0.577957 ( -0.1934  0.198641 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.53596e-08 ( -1.99627e-08  1.99908e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -12.680 sec. to  -11.672 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.550398     ( -0.825112   0.597306 )
Epeak [keV] : 9999.36      ( -10000 -10000 )
Norm@50keV  : 4.98287E-03    (     )
------------------------------------------------------------
# Chi-Squared =          60.56 using 59 PHA bins.
# Reduced chi-squared =          1.081 for     56 degrees of freedom 
# Null hypothesis probability =   3.147542e-01
 
Photon flux (15-150 keV)    in 1.008 sec: 0.577738 ( -0.193276  0.198543 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.53906e-08 ( -1.99763e-08  2.00056e-08 ) ergs/cm2
 
Band function
Time interval is from  -12.680 sec. to  -11.672 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.795247   ( 0.795246   0.795246 )
beta        : -0.532040    ( -0.614653   0.793323 )
Epeak [keV] : 13.8887      ( -13.8887 -13.8887 )
Norm@50keV   : 7.51047E-03    ( 13.1599   -0.00751026 )
------------------------------------------------------------
# Chi-Squared =          60.55 using 59 PHA bins.
# Reduced chi-squared =          1.101 for     55 degrees of freedom 
# Null hypothesis probability =   2.824292e-01
 
Photon flux (15-150 keV)    in 1.008 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Fri Aug 14 10:12:52 EDT 2009