batgrbproduct Analysis for Trigger=356890

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Thu Jul  9 21:53:31 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger356890/GCN5_download_cron
======================================================================

  Trigger: 00356890      Segment: 000

  BAT Trigger Time: 268817919.488   [s; MET]
      Trigger Stop: 268817920.512   [s; MET]
               UTC: 2009-07-09T07:38:34.592520    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 289.933176236556   Dec: 60.7311647159044  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.31
     Image Trigger?:     NO
     Rate S/N Ratio:     43.5430821141545  [ if not an image trigger ]
     Image S/N Ratio:    17.31

  Flight Position:   [ source = BAT ]
    RA: 289.933176236556   Dec: 60.7311647159044  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 289.944856262633   Dec: 60.7279960808192  [deg; J2000]  
        { 19h 19m 46.8s , +60d 43' 40.8" }
         +/- 0.666181035154213 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.1703144832764 [arcmin] (formal 1-sigma fit error)
    SNR: 54.341225695736
 
  Angular difference between Flight and Ground position is 0.391855 arcmin
 
  Partial Coding Fraction: 0.75    [ including projection effects ]

  Duration
     T90: 88.6999999880791 +/- 1.09903233045138
        Measured from: -1.19999986886978
                   to: 87.5000001192093     [s; relative to TRIGTIME]
     T50: 31.0719999670982 +/- 0.450919067970491
        Measured from: 23.240000128746
                   to: 54.3120000958443     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 21.8120000362396     
                   to: 22.8120000362396     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -67.2960000038147     
                   to: 101.540000021458     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     8.023056  13.129590  12.417906   3.714867
           0.083283   0.091919   0.087283   0.072808 [error]
 Peak      0.190027   0.333851   0.361929   0.121358
           0.008960   0.011150   0.011540   0.008931 [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 2.51e-06 5.46e-06 9.36e-06 3.70e-05 2.57e-05 5.44e-05   erg/cm2
              Error 7.83e-08 1.01e-07 1.24e-07 1.18e-06 3.29e-07 1.20e-06   erg/cm2
Peak flux Power-law 1.76e+00 2.36e+00 2.32e+00 4.09e+00 7.78e+00 1.05e+01   ph/cm2/s
              Error 1.29e-01 1.04e-01 9.27e-02 3.58e-01 2.84e-01 4.23e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.38e-06 5.47e-06 9.53e-06 3.16e-05 2.55e-05 4.90e-05   erg/cm2
              Error 1.12e-07 1.02e-07 1.64e-07 3.27e-06 3.39e-07 3.03e-06   erg/cm2
Peak flux Cutoff-PL 1.64e+00 2.39e+00 2.39e+00 3.08e+00 7.69e+00 9.51e+00   ph/cm2/s
              Error 1.64e-01 1.11e-01 1.14e-01 7.81e-01 2.93e-01 7.21e-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    1.223    0.025    -      -           1.51e-02 2.10e-04   37.430 57
CPL   1.071    0.102     395.0  361.5      1.73e-02 1.53e-03   30.770 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.024    0.064    -      -           6.75e-02 2.42e-03   38.250 57
CPL   0.747    0.251     258.2  419.3      8.98e-02 2.28e-02   34.490 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: 73.280000 sec.
T50 in the 50-300 keV band: 26.880000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  168.836  -67.296  101.540
T90    88.700   -1.200   87.500
T50    31.072   23.240   54.312
Peak    1.000   21.812   22.812

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  289.9449 +60.7280 0.0036   19.1  -93.2       6.5198    54.3  TRIG_00356890       
------------------------------------------
 
Foreground time interval of the image:
-50.087  16.313 (delta_t =  66.400 [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
Time interval is from  -67.296 sec. to  101.540 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.22311     ( -0.0246232   0.0245332 )
Norm@50keV  : 1.50793E-02    ( -0.000210325   0.000209922 )
------------------------------------------------------------
# Chi-Squared =          37.43 using 59 PHA bins.
# Reduced chi-squared =         0.6567 for     57 degrees of freedom 
# Null hypothesis probability =   9.790200e-01
 
Photon flux (15-150 keV)    in 168.8 sec: 1.77598 ( -0.0280079  0.0280865 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.56586e-05 ( -3.28562e-07  3.2861e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -67.296 sec. to  101.540 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07097     ( -0.102838   0.100659 )
Epeak [keV] : 395.048      ( -131.31 591.722 )
Norm@50keV  : 1.72631E-02    ( -0.00144974   0.00161021 )
------------------------------------------------------------
# Chi-Squared =          30.77 using 59 PHA bins.
# Reduced chi-squared =         0.5495 for     56 degrees of freedom 
# Null hypothesis probability =   9.975665e-01
 
Photon flux (15-150 keV)    in 168.8 sec: 1.75306 ( -0.03116  0.01572 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.55459e-05 ( -3.38444e-07  3.3895e-07 ) ergs/cm2
 
Band function
Time interval is from  -67.296 sec. to  101.540 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.07098   ( -0.422871   4.1823 )
beta        : -10.00000    ( 2.43777e+11   2.43777e+11 )
Epeak [keV] : 395.016      ( -131.297 591.594 )
Norm@50keV   : 1.72611E-02    ( -0.00144982   0.00161046 )
------------------------------------------------------------
# Chi-Squared =          30.77 using 59 PHA bins.
# Reduced chi-squared =         0.5595 for     55 degrees of freedom 
# Null hypothesis probability =   9.966459e-01
 
Photon flux (15-150 keV)    in 168.8 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   21.812 sec. to   22.812 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.02412     ( -0.0637966   0.0634516 )
Norm@50keV  : 6.74802E-02    ( -0.00241764   0.00241659 )
------------------------------------------------------------
# Chi-Squared =          38.25 using 59 PHA bins.
# Reduced chi-squared =         0.6711 for     57 degrees of freedom 
# Null hypothesis probability =   9.733334e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.77985 ( -0.283753  0.283743 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.23572e-07 ( -2.89018e-08  2.90397e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   21.812 sec. to   22.812 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.746579     ( -0.260025   0.242867 )
Epeak [keV] : 258.181      ( -97.161 741.478 )
Norm@50keV  : 8.98285E-02    ( -0.0190314   0.0266126 )
------------------------------------------------------------
# Chi-Squared =          34.49 using 59 PHA bins.
# Reduced chi-squared =         0.6158 for     56 degrees of freedom 
# Null hypothesis probability =   9.895132e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.68618 ( -0.29452  0.29225 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.13613e-07 ( -3.0736e-08  4.4726e-08 ) ergs/cm2
 
Band function
Time interval is from   21.812 sec. to   22.812 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99996   ( -51623.7   -51623.7 )
beta        : -1.05654    ( -0.0699051   0.0840258 )
Epeak [keV] : 26.0562      ( -26.0562 3.80743 )
Norm@50keV   : 3628.14    ( -1993.23   9.72086e+06 )
------------------------------------------------------------
# Chi-Squared =          35.83 using 59 PHA bins.
# Reduced chi-squared =         0.6515 for     55 degrees of freedom 
# Null hypothesis probability =   9.788902e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Thu Jul  9 22:13:51 EDT 2009