batgrbproduct Analysis for Trigger=201487

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Dec 31 14:08:57 EST 2007
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger201487/GCN5_download_cron
======================================================================

  Trigger: 00201487      Segment: 000

  BAT Trigger Time: 163901527.296   [s; MET]
      Trigger Stop: 163901527.744   [s; MET]
               UTC: 2006-03-13T00:12:06.228480    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) Expanded to TRIGTIME - 64 ms to TRIGTIME + 320 ms

  BAT 
    RA: 66.6095900742749   Dec: -10.8722794349947  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.57
     Image Trigger?:     NO
     Rate S/N Ratio:     129.36769303037  [ if not an image trigger ]
     Image S/N Ratio:    8.57

  Flight Position:   [ source = BAT ]
    RA: 66.6095900742749   Dec: -10.8722794349947  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 66.6282286367184   Dec: -10.8592575304276  [deg; J2000]  
        { 04h 26m 30.8s , -10d 51' 33.3" }
         +/- 0.740026426907029 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.258343249592807 [arcmin] (formal 1-sigma fit error)
    SNR: 46.7636124693922
    RA  =   4h 26m 30.8s  (66.628229 deg.)
    Dec = -10d 51' 33" (-10.859258 deg.)
 
  Angular difference between Flight and Ground position is 1.347826 arcmin
 
  Partial Coding Fraction: 0.546875    [ including projection effects ]

  Duration
     T90: 0.743999987840652 +/- 0.0341760179670827
        Measured from: 0.164000004529953
                   to: 0.907999992370605     [s; relative to TRIGTIME]
     T50: 0.480000019073486 +/- 0.0268328301242448
        Measured from: 0.343999981880188
                   to: 0.824000000953674     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0740000009536743     
                   to: 1.07400000095367     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.131999999284744     
                   to: 1.01199999451637     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.191929   0.413381   0.543735   0.281579
           0.010778   0.014539   0.017093   0.015301 [error]
 Peak      0.191676   0.413592   0.543994   0.282481
           0.010795   0.014558   0.017095   0.015309 [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 5.62e-08 1.69e-07 4.15e-07 2.85e-06 1.13e-06 1.92e-06   erg/cm2
              Error 4.83e-09 8.45e-09 1.59e-08 2.71e-07 4.47e-08 0.00e+00   erg/cm2
Peak flux Power-law 2.02e+00 3.27e+00 4.02e+00 9.74e+00 1.21e+01 1.91e+01   ph/cm2/s
              Error 1.75e-01 1.70e-01 1.51e-01 8.50e-01 4.48e-01 8.70e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.51e-08 1.70e-07 4.20e-07 2.64e-06 1.12e-06 1.05e-06   erg/cm2
              Error 5.95e-09 6.67e-09 5.53e-07 4.37e-08 0.00e+00 0.00e+00   erg/cm2
Peak flux Cutoff-PL 2.01e+00 3.27e+00 4.02e+00 9.68e+00 1.21e+01 1.90e+01   ph/cm2/s
              Error 1.75e-01 1.70e-01 1.51e-01 8.45e-01 4.48e-01 8.65e-01   ph/cm2/s
 
Fluence        Band 5.43e-08 1.70e-07 4.15e-07 2.82e-06 1.12e-06 9.48e-07   erg/cm2
              Error 6.97e-09 9.42e-09 1.56e-08 4.84e-07 4.49e-08 0.00e+00   erg/cm2
Peak flux      Band 1.98e+00 3.28e+00 4.06e+00 9.16e+00 1.21e+01 1.85e+01   ph/cm2/s
              Error 2.16e-01 1.73e-01 1.91e-01 1.64e+00 4.55e-01 1.65e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.704    0.069    -      -           1.05e-01 4.06e-03   49.899 57
CPL   0.696    0.070    9988.8 5000.0      1.06e-01 4.08e-03   49.873 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.703    0.069    -      -           1.04e-01 4.05e-03   50.624 57
CPL   0.695    0.070    9988.4 5000.0      1.05e-01 4.06e-03   50.598 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: 0.704000 sec.
T50 in the 50-300 keV band: 0.512000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.880    0.132    1.012
T90     0.744    0.164    0.908
T50     0.480    0.344    0.824
Peak    1.000    0.074    1.074

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   66.6282 -10.8593 0.0041   31.5  151.2       1.5086    46.8  TRIG_00201487       
------------------------------------------
 
Foreground time interval of the image:
  0.068   0.948 (delta_t =   0.880 [sec])
Background time interval of the image:
-299.360   0.068 (delta_t = 299.428 [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    0.068 sec. to    0.948 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.704477     ( -6.958354E-02   6.856239E-02) )
Norm@50keV  : 0.104959    ( -4.073374E-03   4.048884E-03) )
------------------------------------------------------------
 Chi-Squared =      49.89864     using    59 PHA bins.
 Reduced chi-squared =     0.8754147     for     57 degrees of freedom
 Null hypothesis probability = 0.736
 
Photon flux (15-150 keV)    in 0.8800 sec: 12.1280 ( -0.4494  0.4498 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12517e-06 ( -4.466e-08  4.47392e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.068 sec. to    0.948 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.696189     ( -7.017118E-02   6.918222E-02) )
Epeak [keV] : 9988.77      ( -9988.76 11.2295 )
Norm@50keV  : 0.105779    ( -4.089020E-03   4.066579E-03) )
------------------------------------------------------------
 Chi-Squared =      49.87258     using    59 PHA bins.
 Reduced chi-squared =     0.8905818     for     56 degrees of freedom
 Null hypothesis probability = 0.705
 
Photon flux (15-150 keV)    in 0.8800 sec: 12.1160 ( -0.4519  0.4542 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12452e-06 ( -4.36982e-08  4.36744e-08 ) ergs/cm2
 
Band function
Time interval is from    0.068 sec. to    0.948 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.771826   ( -9.22817   5.77183 )
beta        : -0.704450    ( -6.858099E-02   6.957483E-02) )
Epeak [keV] : 13.2934      ( -13.1934 9986.71 )
Norm@50keV   : 0.165238    ( -5.241458E-02   235148. )
------------------------------------------------------------
 Chi-Squared =      49.89866     using    59 PHA bins.
 Reduced chi-squared =     0.9072483     for     55 degrees of freedom
 Null hypothesis probability = 0.669
 
Photon flux (15-150 keV)    in 0.8800 sec: 12.1151 ( -0.454  0.4558 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12312e-06 ( -4.60038e-08  4.38055e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.068 sec. to    0.952 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.702966     ( -6.958288E-02   6.861109E-02) )
Norm@50keV  : 0.104487    ( -4.058257E-03   4.034869E-03) )
------------------------------------------------------------
 Chi-Squared =      50.62445     using    59 PHA bins.
 Reduced chi-squared =     0.8881483     for     57 degrees of freedom
 Null hypothesis probability = 0.712
 
Photon flux (15-150 keV)    in 0.8840 sec: 12.0750 ( -0.4477  0.448 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12596e-06 ( -4.46827e-08  4.47569e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.068 sec. to    0.952 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.694698     ( -7.020324E-02   6.919962E-02) )
Epeak [keV] : 9988.40      ( -9988.39 11.6006 )
Norm@50keV  : 0.105305    ( -4.074499E-03   4.051849E-03) )
------------------------------------------------------------
 Chi-Squared =      50.59833     using    59 PHA bins.
 Reduced chi-squared =     0.9035416     for     56 degrees of freedom
 Null hypothesis probability = 0.679
 
Photon flux (15-150 keV)    in 0.8840 sec: 12.0728 ( -0.4475  0.4479 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12653e-06 ( -4.47242e-08  4.47994e-08 ) ergs/cm2
 
Band function
Time interval is from    0.068 sec. to    0.952 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.683285   ( -9.31672   5.68328 )
beta        : -0.702969    ( -6.860816E-02   6.958628E-02) )
Epeak [keV] : 13.8924      ( -9999.90 2.929688E-03) )
Norm@50keV   : 0.166438    ( -4.073806E-03   4.046828E-03) )
------------------------------------------------------------
 Chi-Squared =      50.62445     using    59 PHA bins.
 Reduced chi-squared =     0.9204445     for     55 degrees of freedom
 Null hypothesis probability = 0.642
 
Photon flux (15-150 keV)    in 0.8840 sec: 12.0566 ( -0.4485  0.4613 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12364e-06 ( -4.61696e-08  4.35821e-08 ) ergs/cm2
 
Plot creation:
Mon Dec 31 14:21:35 EST 2007