batgrbproduct Analysis for Trigger=162580

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Jan  9 17:25:28 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger162580/SDC
======================================================================

  Trigger: 00162580      Segment: 000

  BAT Trigger Time: 152864801.36   [s; MET]
      Trigger Stop: 152864801.392   [s; MET]
               UTC: 2005-11-05T06:26:41.537840    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 265.289452879954   Dec: 34.9208520942204  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.09
     Image Trigger?:     NO
     Rate S/N Ratio:     17.832554500127  [ if not an image trigger ]
     Image S/N Ratio:    7.09

  Flight Position:   [ source = BAT ]
    RA: 265.289452879954   Dec: 34.9208520942204  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 265.296282147326   Dec: 34.9468838406215  [deg; J2000]  
        { 17h 41m 11.1s , +34d 56' 48.8" }
         +/- 2.35694216922233 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.97078436146998 [arcmin] (formal 1-sigma fit error)
    SNR: 8.93699143907044
    RA  =  17h 41m 11.1s  (265.296282 deg.)
    Dec =  34d 56' 49" (34.946884 deg.)
 
  Angular difference between Flight and Ground position is 1.597620 arcmin
 
  Partial Coding Fraction: 0.8046875    [ including projection effects ]

  Duration
     T90: 0.0559999942779541 +/- 0.0144222095322683
        Measured from: 0
                   to: 0.0559999942779541     [s; relative to TRIGTIME]
     T50: 0.0320000052452087 +/- 0.0178885400881622
        Measured from: 0.00799998641014099
                   to: 0.0399999916553497     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.468000024557114     
                   to: 0.531999975442886     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.00400000810623169     
                   to: 0.0639999806880951     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.006332   0.011624   0.010470   0.002168
           0.001759   0.001969   0.001838   0.001136 [error]
 Peak      0.006090   0.011052   0.010870   0.002104
           0.001824   0.002011   0.001885   0.001149 [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 1.98e-09 4.03e-09 6.30e-09 2.17e-08 1.76e-08 3.23e-08   erg/cm2
              Error 6.34e-10 8.36e-10 1.37e-09 9.51e-09 3.50e-09 0.00e+00   erg/cm2
Peak flux Power-law 7.83e-01 9.66e-01 8.65e-01 1.34e+00 3.08e+00 3.96e+00   ph/cm2/s
              Error 2.80e-01 2.22e-01 1.73e-01 5.35e-01 6.11e-01 7.59e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.61e-09 4.48e-09 7.31e-09 8.32e-09 1.77e-08 2.14e-08   erg/cm2
              Error 7.47e-10 1.04e-09 1.86e-09 1.14e-08 3.65e-09 1.16e-08   erg/cm2
Peak flux Cutoff-PL 6.55e-01 1.02e+00 9.68e-01 7.55e-01 3.06e+00 3.40e+00   ph/cm2/s
              Error 3.35e-01 2.56e-01 2.44e-01 7.46e-01 6.11e-01 9.06e-01   ph/cm2/s
 
Fluence        Band 1.59e-09 4.46e-09 7.33e-09 8.18e-09 1.77e-08 2.15e-08   erg/cm2
              Error 7.39e-10 1.03e-09 1.86e-09 8.65e-09 3.65e-09 4.93e-09   erg/cm2
Peak flux      Band 6.10e-01 1.09e+00 9.19e-01 1.04e+00 3.01e+00 3.66e+00   ph/cm2/s
              Error 3.85e-01 2.99e-01 2.07e-01 6.07e-01 6.17e-01 9.32e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.351    0.281    -      -           2.65e-02 5.00e-03   49.127 57
CPL   0.331    1.305      93.2 4968.3      7.89e-02 1.81e-01   46.788 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.158    0.297    -      -           2.64e-02 5.01e-03   46.246 57
CPL   0.421    1.245     124.8 4963.4      5.68e-02 1.15e-01   45.149 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    0.068   -0.004    0.064
T90     0.056    0.000    0.056
T50     0.032    0.008    0.040
Peak    1.000   -0.468    0.532

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  265.2963 +34.9469 0.0214   20.9  142.0       0.0300     8.9  TRIG_00162580       
------------------------------------------
 
Foreground time interval of the image:
  0.076   0.144 (delta_t =   0.068 [sec])
Background time interval of the image:
-60.280   0.076 (delta_t =  60.356 [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    0.076 sec. to    0.144 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.35118     ( -0.279866   0.281876 )
Norm@50keV  : 2.645977E-02    ( -4.996311E-03   4.995968E-03) )
------------------------------------------------------------
 Chi-Squared =      49.12678     using    59 PHA bins.
 Reduced chi-squared =     0.8618733     for     57 degrees of freedom
 Null hypothesis probability = 0.762
 
Photon flux (15-150 keV)    in 6.8000E-02 sec: 3.18841 ( -0.62549  0.62717 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.75555e-08 ( -3.48452e-09  3.5156e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.076 sec. to    0.144 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.331269     ( -1.48886   1.12100 )
Epeak [keV] : 93.1775      ( -29.8006 9906.82 )
Norm@50keV  : 7.892276E-02    ( -7.892276E-02   0.283805 )
------------------------------------------------------------
 Chi-Squared =      46.78804     using    59 PHA bins.
 Reduced chi-squared =     0.8355008     for     56 degrees of freedom
 Null hypothesis probability = 0.805
 
Photon flux (15-150 keV)    in 6.8000E-02 sec: 3.17058 ( -0.62536  0.62863 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.76952e-08 ( -3.66744e-09  3.63304e-09 ) ergs/cm2
 
Band function
Time interval is from    0.076 sec. to    0.144 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.331532   ( -1.12059   1.21717 )
beta        : -9.13637    ( -0.863630   7.90768 )
Epeak [keV] : 93.1612      ( -29.2747 9906.84 )
Norm@50keV   : 7.891680E-02    ( -7.891680E-02   0.284694 )
------------------------------------------------------------
 Chi-Squared =      46.78806     using    59 PHA bins.
 Reduced chi-squared =     0.8506919     for     55 degrees of freedom
 Null hypothesis probability = 0.777
 
Photon flux (15-150 keV)    in 6.8000E-02 sec: 3.17052 ( -0.62539  0.62813 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.76805e-08 ( -3.66105e-09  3.63569e-09 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.076 sec. to    0.148 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.15849     ( -0.302385   0.291924 )
Norm@50keV  : 2.636390E-02    ( -5.019831E-03   4.996724E-03) )
------------------------------------------------------------
 Chi-Squared =      46.24599     using    59 PHA bins.
 Reduced chi-squared =     0.8113331     for     57 degrees of freedom
 Null hypothesis probability = 0.845
 
Photon flux (15-150 keV)    in 7.2000E-02 sec: 3.07770 ( -0.60962  0.61207 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.9491e-08 ( -3.816e-09  3.82421e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.076 sec. to    0.148 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.420550     ( -1.52975   0.959819 )
Epeak [keV] : 124.839      ( -51.5589 9875.16 )
Norm@50keV  : 5.684765E-02    ( -3.424343E-02   0.196200 )
------------------------------------------------------------
 Chi-Squared =      45.14890     using    59 PHA bins.
 Reduced chi-squared =     0.8062302     for     56 degrees of freedom
 Null hypothesis probability = 0.850
 
Photon flux (15-150 keV)    in 7.2000E-02 sec: 3.05516 ( -0.60896  0.61249 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.94831e-08 ( -3.96274e-09  3.91255e-09 ) ergs/cm2
 
Band function
Time interval is from    0.076 sec. to    0.148 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.555030   ( -10.5550   4.44497 )
beta        : -1.49398    ( -8.50602   0.544488 )
Epeak [keV] : 66.0748      ( -65.9748 1001.15 )
Norm@50keV   : 0.218421    ( -0.218421   133.850 )
------------------------------------------------------------
 Chi-Squared =      44.82086     using    59 PHA bins.
 Reduced chi-squared =     0.8149248     for     55 degrees of freedom
 Null hypothesis probability = 0.835
 
Photon flux (15-150 keV)    in 7.2000E-02 sec: 3.01485 ( -0.61697  0.61766 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.94697e-08 ( -3.96778e-09  3.91039e-09 ) ergs/cm2
 
Plot creation:
Wed Jan  9 17:31:26 EST 2008