batgrbproduct Analysis for Trigger=213180

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  1 14:50:17 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger213180/SDC
======================================================================

  Trigger: 00213180      Segment: 000

  BAT Trigger Time: 170976733.696   [s; MET]
      Trigger Stop: 170976745.856   [s; MET]
               UTC: 2006-06-02T21:32:12.464320    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 149.575786869351   Dec: 0.323047531306239  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.58
     Image Trigger?:     NO
     Rate S/N Ratio:     13.114877048604  [ if not an image trigger ]
     Image S/N Ratio:    7.58

  Flight Position:   [ source = BAT ]
    RA: 149.575786869351   Dec: 0.323047531306239  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 149.578724003955   Dec: 0.313092277190948  [deg; J2000]  
        { 09h 58m 18.9s , +00d 18' 47.1" }
         +/- 1.64799221701058 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.546458547006908 [arcmin] (formal 1-sigma fit error)
    SNR: 14.8998687353578
    RA  =   9h 58m 18.9s  (149.578724 deg.)
    Dec =   0d 18' 47" (0.313092 deg.)
 
  Angular difference between Flight and Ground position is 0.622769 arcmin
 
  Partial Coding Fraction: 0.4375    [ including projection effects ]

  Duration
     T90: 62.108000010252 +/- 13.2775565565479
        Measured from: 4.44799998402596
                   to: 66.555999994278     [s; relative to TRIGTIME]
     T50: 33.0920000076294 +/- 10.9106282217194
        Measured from: 15.8759999871254
                   to: 48.9679999947548     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 18.0439999997616     
                   to: 19.0439999997616     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 2.12000000476837     
                   to: 86.447999984026     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.447495   0.788516   0.768728   0.268746
           0.070991   0.072609   0.066025   0.059473 [error]
 Peak      0.014662   0.018085   0.032278   0.012071
           0.007887   0.007980   0.007389   0.006557 [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 1.63e-07 3.48e-07 5.86e-07 2.25e-06 1.61e-06 3.33e-06   erg/cm2
              Error 3.10e-08 3.98e-08 6.10e-08 5.32e-07 1.57e-07 5.61e-07   erg/cm2
Peak flux Power-law 1.02e-01 1.57e-01 1.81e-01 4.02e-01 5.59e-01 8.42e-01   ph/cm2/s
              Error 8.05e-02 7.73e-02 5.44e-02 2.62e-01 1.97e-01 2.68e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.47e-07 3.60e-07 6.16e-07 1.33e-06 1.59e-06 2.47e-06   erg/cm2
              Error 3.85e-08 4.50e-08 7.66e-08 1.00e-06 1.64e-07 1.00e-06   erg/cm2
Peak flux Cutoff-PL 4.13e-02 1.40e-01 2.27e-01 1.47e-01 5.08e-01 5.55e-01   ph/cm2/s
              Error 8.36e-02 8.81e-02 8.72e-02 3.21e-01 1.95e-01 3.51e-01   ph/cm2/s
 
Fluence        Band 1.41e-07 3.70e-07 5.86e-07 2.06e-06 1.59e-06 3.18e-06   erg/cm2
              Error 4.26e-08 5.07e-08 7.78e-08 5.39e-07 1.53e-07 5.95e-07   erg/cm2
Peak flux      Band 4.43e-02 1.36e-01 2.29e-01 2.03e-01 4.96e-01 5.64e-01   ph/cm2/s
              Error 9.26e-02 8.29e-02 2.94e-01 1.96e-01 3.51e-01 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.251    0.164    -      -           1.91e-03 1.80e-04   38.620 57
CPL   0.806    0.659     152.7 4955.4      3.03e-03 2.38e-03   37.344  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.792    0.592    -      -           4.86e-03 1.80e-03   50.266 57
CPL  -1.312    3.647     108.7 4981.4      2.63e-02 5.04e-02   49.314  0
 
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: 78.336000 sec.
T50 in the 50-300 keV band: 21.760000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   84.328    2.120   86.448
T90    62.108    4.448   66.556
T50    33.092   15.876   48.968
Peak    1.000   18.044   19.044

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  149.5787  +0.3131 0.0130   44.5   -7.7       2.3328    14.9  TRIG_00213180       
------------------------------------------
 
Foreground time interval of the image:
  2.120  86.448 (delta_t =  84.328 [sec])
Background time interval of the image:
-239.696   2.120 (delta_t = 241.816 [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    2.120 sec. to   86.448 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25053     ( -0.165632   0.161703 )
Norm@50keV  : 1.908086E-03    ( -1.802406E-04   1.794533E-04) )
------------------------------------------------------------
 Chi-Squared =      38.62031     using    59 PHA bins.
 Reduced chi-squared =     0.6775492     for     57 degrees of freedom
 Null hypothesis probability = 0.970
 
Photon flux (15-150 keV)    in 84.33 sec: 0.225695 ( -0.022896  0.023013 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.61017e-06 ( -1.56204e-07  1.56879e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    2.120 sec. to   86.448 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.806343     ( -0.764555   0.552517 )
Epeak [keV] : 152.709      ( -63.5678 9847.29 )
Norm@50keV  : 3.034841E-03    ( -1.250329E-03   3.502358E-03) )
------------------------------------------------------------
 Chi-Squared =      37.34401     using    59 PHA bins.
 but latest trial   1.26815     gives Chi-Squared =   1.30253
 Reduced chi-squared =     0.6668573     for     56 degrees of freedom
 Null hypothesis probability = 0.974
 
Photon flux (15-150 keV)    in 84.33 sec: 0.221820 ( -0.023617  0.023704 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.5868e-06 ( -1.65025e-07  1.62605e-07 ) ergs/cm2
 
Band function
Time interval is from    2.120 sec. to   86.448 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.589172   ( -11.1877   2.54269 )
beta        : -1.49397    ( -0.247411   0.212194 )
Epeak [keV] : 105.999      ( -39.4122 725.395 )
Norm@50keV   : 4.050969E-03    ( -11.0233   21.2097 )
------------------------------------------------------------
 Chi-Squared =      37.20787     using    59 PHA bins.
 Reduced chi-squared =     0.6765066     for     55 degrees of freedom
 Null hypothesis probability = 0.968
 
Photon flux (15-150 keV)    in 84.33 sec: 0.220788 ( -0.024142  0.012142 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.59121e-06 ( -1.57368e-07  1.48008e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   18.044 sec. to   19.044 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.792349     ( -0.646601   0.538146 )
Norm@50keV  : 4.863351E-03    ( -1.865164E-03   1.732544E-03) )
------------------------------------------------------------
 Chi-Squared =      50.26592     using    59 PHA bins.
 Reduced chi-squared =     0.8818583     for     57 degrees of freedom
 Null hypothesis probability = 0.724
 
Photon flux (15-150 keV)    in 1.000 sec: 0.559121 ( -0.192777  0.201346 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.70162e-08 ( -1.71806e-08  1.72027e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   18.044 sec. to   19.044 sec.
Parameters  : value       lower 90%   higher 90%
Photon index: -1.31183     ( -1.68817   5.60544 )
Epeak [keV] : 108.729      ( -71.5676 9891.27 )
Norm@50keV  : 2.627176E-02    ( -2.627176E-02   7.458162E-02) )
------------------------------------------------------------
 Chi-Squared =      49.31442     using    59 PHA bins.
 but latest trial   3.35935     gives Chi-Squared =   1.73101
 but latest trial   36.4117     gives Chi-Squared =   3.15658
 Reduced chi-squared =     0.8806146     for     56 degrees of freedom
 Null hypothesis probability = 0.724
 
Photon flux (15-150 keV)    in 1.000 sec: 0.508010 ( -0.173512  0.216577 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.56502e-08 ( -1.83892e-08  1.80757e-08 ) ergs/cm2
 
Band function
Time interval is from   18.044 sec. to   19.044 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.720212   ( -9.27979   5.72021 )
beta        : -0.796288    ( -0.533595   0.650600 )
Epeak [keV] : 15.4265      ( -15.3265 9984.57 )
Norm@50keV   : 7.317511E-03    ( -7.317511E-03   12104.4 )
------------------------------------------------------------
 Chi-Squared =      50.26606     using    59 PHA bins.
 Reduced chi-squared =     0.9139284     for     55 degrees of freedom
 Null hypothesis probability = 0.656
 
Photon flux (15-150 keV)    in 1.000 sec: 0.496116 ( -0.169064  0.223389 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.59031e-08 ( -1.72516e-08  1.7672e-08 ) ergs/cm2
 
Plot creation:
Tue Jan  1 15:14:25 EST 2008