batgrbproduct Analysis for Trigger=330353

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Fri Oct  3 19:02:29 EDT 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger330353/GCN5_download_cron
======================================================================

  Trigger: 00330353      Segment: 000

  BAT Trigger Time: 244718892.024   [s; MET]
      Trigger Stop: 244718892.088   [s; MET]
               UTC: 2008-10-03T09:28:08.878460    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 237.711315745411   Dec: -54.3193323736566  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.49
     Image Trigger?:     NO
     Rate S/N Ratio:     24.2487113059643  [ if not an image trigger ]
     Image S/N Ratio:    12.49

  Flight Position:   [ source = BAT ]
    RA: 237.711315745411   Dec: -54.3193323736566  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 237.856536437009   Dec: -54.4460064770027  [deg; J2000]  
        { 15h 51m 25.6s , -54d 26' 45.6" }
         +/- 8.35798274186355 [arcmin] (estimated 90% radius based on SNR)
         +/- 7.73295957271479 [arcmin] (formal 1-sigma fit error)
    SNR: 1.46497618796714
 
  Angular difference between Flight and Ground position is 9.138678 arcmin
 
  Partial Coding Fraction: 0.953125    [ including projection effects ]

  Duration
     T90: 615.06400001049 +/- 264.583602352755
        Measured from: -2.46399989724159
                   to: 612.600000113249     [s; relative to TRIGTIME]
     T50: 615.06400001049 +/- 368.347903742417
        Measured from: -2.46399989724159
                   to: 612.600000113249     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 523.636000007391     
                   to: 524.636000007391     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.46399998664856     
                   to: 612.600000023842     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.473923   0.174253   0.462314   0.112436
           0.132465   0.124164   0.115849   0.120782 [error]
 Peak      0.086870   0.154902   0.054773  -0.006048
           0.006336   0.006617   0.005218   0.004788 [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 1.10e-07 1.85e-07 2.35e-07 5.99e-07 6.96e-07 1.13e-06   erg/cm2
              Error 5.95e-08 5.71e-08 1.27e-07 8.62e-07 2.84e-07 8.93e-07   erg/cm2
Peak flux Power-law 1.04e+00 8.42e-01 4.59e-01 3.66e-01 2.51e+00 2.71e+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   Cutoff-PL 1.10e-07 1.85e-07 2.35e-07 5.94e-07 6.95e-07 1.12e-06   erg/cm2
              Error 5.95e-08 5.71e-08 1.27e-07 8.55e-07 2.84e-07 8.87e-07   erg/cm2
Peak flux Cutoff-PL 6.60e-01 1.17e+00 4.37e-01 1.61e-02 2.29e+00 2.29e+00   ph/cm2/s
              Error 1.12e-01 8.32e-02 5.85e-02 1.14e-02 1.62e-01 1.62e-01   ph/cm2/s
 
Fluence        Band 1.18e-07 1.79e-07 2.33e-07 5.81e-07 6.91e-07 9.92e-07   erg/cm2
              Error 3.79e-08 5.67e-08 6.66e-08 5.90e-07 2.17e-07 7.88e-07   erg/cm2
Peak flux      Band 6.49e-01 1.18e+00 4.31e-01 1.41e-02 2.27e+00 2.27e+00   ph/cm2/s
              Error 1.06e-01 7.11e-02 4.81e-02 1.03e-02 1.02e-01 1.37e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.652    0.752    -      -           1.22e-04 4.64e-05   69.512 57
CPL   1.652    0.755    9994.9 5000.0      1.22e-04 4.67e-05   69.515 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.875    0.000    -      -           1.77e-02 0.00e+00  154.210 57
CPL  -1.913    0.919      43.9    2.3      2.31e+00 2.59e+00   52.638 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: 310.080000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  615.064   -2.464  612.600
T90   615.064   -2.464  612.600
T50   615.064   -2.464  612.600
Peak    1.000  523.636  524.636

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  237.8565 -54.4460 0.1300   19.3 -146.2       0.0873     1.5  TRIG_00330353       
------------------------------------------
 
Foreground time interval of the image:
 -2.464  12.777 (delta_t =  15.241 [sec])
Background time interval of the image:
-14.723  -2.464 (delta_t =  12.259 [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
Multiple GTIs in the spectrum
tstart tstop
-2.464000 147.086000
147.976000 386.466000
387.976000 612.600000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65180     ( -0.709335   0.793805 )
Norm@50keV  : 1.220780E-04    ( -4.973058E-05   4.304163E-05) )
------------------------------------------------------------
 Chi-Squared =      69.51168     using    59 PHA bins.
 Reduced chi-squared =      1.219503     for     57 degrees of freedom
 Null hypothesis probability = 0.124
 
Photon flux (15-150 keV)    in 612.7 sec: 1.595603E-02 ( -0.00491209  0.00491504 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.95819e-07 ( -2.73915e-07  2.94856e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-2.464000 147.086000
147.976000 386.466000
387.976000 612.600000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65181     ( -0.714327   0.796525 )
Epeak [keV] : 9994.89      ( -9994.88 5.11328 )
Norm@50keV  : 1.223063E-04    ( -5.014285E-05   4.334345E-05) )
------------------------------------------------------------
 Chi-Squared =      69.51530     using    59 PHA bins.
 Reduced chi-squared =      1.241345     for     56 degrees of freedom
 Null hypothesis probability = 0.106
 
Photon flux (15-150 keV)    in 612.7 sec: 1.594738E-02 ( -0.00491032  0.00491343 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.95488e-07 ( -2.73847e-07  2.95033e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-2.464000 147.086000
147.976000 386.466000
387.976000 612.600000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.26184   ( -8.73816   6.26184 )
beta        : -1.64878    ( -1.31708   0.706422 )
Epeak [keV] : 22.0408      ( -21.9408 9977.96 )
Norm@50keV   : 3.172818E-04    ( -3.172818E-04   17.8633 )
------------------------------------------------------------
 Chi-Squared =      69.51175     using    59 PHA bins.
 Reduced chi-squared =      1.263850     for     55 degrees of freedom
 Null hypothesis probability = 9.010E-02
 
Photon flux (15-150 keV)    in 612.7 sec: 1.589168E-02 ( -0.00488435  0.00487876 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.90721e-07 ( -2.20719e-07  2.12693e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from  523.636 sec. to  524.636 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.87514     (     )
Norm@50keV  : 1.765703E-02    (     )
------------------------------------------------------------
 Chi-Squared =      154.2105     using    59 PHA bins.
 Reduced chi-squared =      2.705447     for     57 degrees of freedom
 Null hypothesis probability = 6.868E-11
 
Photon flux (15-150 keV)    in 1.000 sec: 2.50760 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.62283e-07 ( 0  0 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  523.636 sec. to  524.636 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.91258     ( -0.993128   0.844036 )
Epeak [keV] : 43.8516      ( -2.17403 2.42630 )
Norm@50keV  : 2.31425    ( -2.31425   2.87137 )
------------------------------------------------------------
 Chi-Squared =      52.63824     using    59 PHA bins.
 Reduced chi-squared =     0.9399686     for     56 degrees of freedom
 Null hypothesis probability = 0.603
 
Photon flux (15-150 keV)    in 1.000 sec: 2.28715 ( -0.16115  0.16194 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.35923e-07 ( -9.931e-09  1.0355e-08 ) ergs/cm2
 
Band function
Time interval is from  523.636 sec. to  524.636 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.18091   ( -1.73920   0.497989 )
beta        : -9.37162    ( -1.850128E-04   3.328323E-04) )
Epeak [keV] : 44.8675      ( -2.05939 3.42777 )
Norm@50keV   : 0.896517    ( -1.83827   5.58824 )
------------------------------------------------------------
 Chi-Squared =      54.73444     using    59 PHA bins.
 Reduced chi-squared =     0.9951717     for     55 degrees of freedom
 Null hypothesis probability = 0.485
 
Photon flux (15-150 keV)    in 1.000 sec: 2.26725 ( -0.06987  0.13474 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.35457e-07 ( -9.415e-09  8.147e-09 ) ergs/cm2
 
Plot creation:
Fri Oct  3 19:31:16 EDT 2008