batgrbproduct Analysis for Trigger=235645

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Jan  2 09:23:50 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger235645/GCN5_download_cron
======================================================================

  Trigger: 00235645      Segment: 000

  BAT Trigger Time: 183636904   [s; MET]
      Trigger Stop: 183636968   [s; MET]
               UTC: 2006-10-27T10:15:02.467300    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 270.812052997813   Dec: -82.2277921845646  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.05
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.05

  Flight Position:   [ source = BAT ]
    RA: 270.812052997813   Dec: -82.2277921845646  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 270.893613519397   Dec: -82.2380496833285  [deg; J2000]  
        { 18h 03m 34.5s , -82d 14' 17.0" }
         +/- 3.59542616302774 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.94498943302136 [arcmin] (formal 1-sigma fit error)
    SNR: 4.88865369719041
    RA  =  18h  3m 34.5s  (270.893614 deg.)
    Dec = -82d 14' 17" (-82.238050 deg.)
 
  Angular difference between Flight and Ground position is 0.903421 arcmin
 
  Partial Coding Fraction: 0.6875    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.197988   0.238868   0.090793  -0.020517
           0.050524   0.049199   0.043022   0.038482 [error]
 Peak      0.197988   0.238868   0.090793  -0.020517
           0.050524   0.049199   0.043022   0.038482 [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 6.37e-08 8.84e-08 9.06e-08 1.70e-07 2.97e-07 4.11e-07   erg/cm2
              Error 2.30e-08 2.39e-08 3.85e-08 1.43e-07 9.31e-08 1.88e-07   erg/cm2
Peak flux Power-law 3.24e-02 2.48e-02 1.27e-02 9.39e-03 7.43e-02 7.94e-02   ph/cm2/s
              Error 1.19e-02 6.70e-03 5.24e-03 7.30e-03 2.01e-02 2.15e-02   ph/cm2/s
 
Fluence   Cutoff-PL 5.87e-08 1.11e-07 6.95e-08 9.29e-09 2.48e-07 2.49e-07   erg/cm2
              Error 2.48e-08 3.65e-08 6.36e-08 6.06e-08 7.42e-08 1.50e-07   erg/cm2
Peak flux Cutoff-PL 2.92e-02 3.11e-02 1.04e-02 7.63e-04 7.15e-02 7.15e-02   ph/cm2/s
              Error 1.28e-02 1.04e-02 9.07e-03 5.37e-03 2.03e-02 2.05e-02   ph/cm2/s
 
Fluence        Band 5.95e-08 1.05e-07 8.08e-08 8.28e-08 2.80e-07 2.81e-07   erg/cm2
              Error 3.21e-08 3.06e-08 3.17e-08 1.01e-07 9.38e-08 1.24e-07   erg/cm2
Peak flux      Band 2.91e-02 3.13e-02 1.02e-02 7.01e-04 7.13e-02 7.13e-02   ph/cm2/s
              Error 9.33e-03 6.12e-03 3.64e-03 7.54e-03 2.15e-02 1.87e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.964    0.459    -      -           5.04e-04 1.63e-04   65.456 57
CPL  -0.048    2.520      37.9 5000.0      8.90e-03 2.95e-01   62.839 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.964    0.459    -      -           5.04e-04 1.63e-04   65.456 57
CPL  -0.048    2.520      37.9 5000.0      8.90e-03 2.95e-01   62.839 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   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  270.8936 -82.2380 0.0391   35.2 -156.6       0.4513     4.9  TRIG_00235645       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [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    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.96397     ( -0.437136   0.481077 )
Norm@50keV  : 5.036644E-04    ( -1.649729E-04   1.611327E-04) )
------------------------------------------------------------
 Chi-Squared =      65.45647     using    59 PHA bins.
 Reduced chi-squared =      1.148359     for     57 degrees of freedom
 Null hypothesis probability = 0.207
 
Photon flux (15-150 keV)    in 64.00 sec: 7.433367E-02 ( -0.0200736  0.0201036 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.96812e-07 ( -9.08435e-08  9.5447e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.807266E-02     ( -2.95193   2.08898 )
Epeak [keV] : 37.9401      ( -37.9301 9962.06 )
Norm@50keV  : 8.903402E-03    ( -8.903402E-03   0.581342 )
------------------------------------------------------------
 Chi-Squared =      62.83867     using    59 PHA bins.
 Reduced chi-squared =      1.122119     for     56 degrees of freedom
 Null hypothesis probability = 0.247
 
Photon flux (15-150 keV)    in 64.00 sec: 7.148170E-02 ( -0.0204739  0.0201538 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.47785e-07 ( -9.40544e-08  5.44192e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.916015   ( -9.08398   3.99937 )
beta        : -9.11971    ( -0.880292   19.1197 )
Epeak [keV] : 40.4309      ( -40.3309 9959.57 )
Norm@50keV   : 2.209199E-03    ( -17.4665   5.12728 )
------------------------------------------------------------
 Chi-Squared =      63.23479     using    59 PHA bins.
 Reduced chi-squared =      1.149723     for     55 degrees of freedom
 Null hypothesis probability = 0.208
 
Photon flux (15-150 keV)    in 64.00 sec: 7.133082E-02 ( -0.0185843  0.0243332 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.80258e-07 ( -9.42918e-08  9.33939e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.96397     ( -0.437136   0.481077 )
Norm@50keV  : 5.036644E-04    ( -1.649729E-04   1.611327E-04) )
------------------------------------------------------------
 Chi-Squared =      65.45647     using    59 PHA bins.
 Reduced chi-squared =      1.148359     for     57 degrees of freedom
 Null hypothesis probability = 0.207
 
Photon flux (15-150 keV)    in 64.00 sec: 7.433367E-02 ( -0.0200736  0.0201036 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.96812e-07 ( -9.08435e-08  9.5447e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.807266E-02     ( -2.95193   2.08898 )
Epeak [keV] : 37.9401      ( -37.9301 9962.06 )
Norm@50keV  : 8.903402E-03    ( -8.903402E-03   0.581342 )
------------------------------------------------------------
 Chi-Squared =      62.83867     using    59 PHA bins.
 Reduced chi-squared =      1.122119     for     56 degrees of freedom
 Null hypothesis probability = 0.247
 
Photon flux (15-150 keV)    in 64.00 sec: 7.148170E-02 ( -0.0204739  0.0201538 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.47785e-07 ( -9.40544e-08  5.44192e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.916015   ( -9.08398   3.99937 )
beta        : -9.11971    ( -0.880292   19.1197 )
Epeak [keV] : 40.4309      ( -40.3309 9959.57 )
Norm@50keV   : 2.209199E-03    ( -17.4665   5.12728 )
------------------------------------------------------------
 Chi-Squared =      63.23479     using    59 PHA bins.
 Reduced chi-squared =      1.149723     for     55 degrees of freedom
 Null hypothesis probability = 0.208
 
Photon flux (15-150 keV)    in 64.00 sec: 7.133082E-02 ( -0.0185843  0.0243332 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.80258e-07 ( -9.42918e-08  9.33939e-08 ) ergs/cm2
 
Plot creation:
Wed Jan  2 09:40:25 EST 2008