batgrbproduct Analysis for Trigger=145011

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Jan  7 12:37:57 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger145011/GCN5_download_cron
======================================================================

  Trigger: 00145011      Segment: 000

  BAT Trigger Time: 142594520   [s; MET]
      Trigger Stop: 142594584   [s; MET]
               UTC: 2005-07-09T09:35:20.387100    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 273.581178445992   Dec: -17.1302817148166  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    33280
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    33280

  Flight Position:   [ source = BAT ]
    RA: 273.581178445992   Dec: -17.1302817148166  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 273.583897293976   Dec: -17.1323676960533  [deg; J2000]  
        { 18h 14m 20.1s , -17d 07' 56.5" }
         +/- 15.8240618397808 [arcmin] (estimated 90% radius based on SNR)
         +/- 16.5280977445037 [arcmin] (formal 1-sigma fit error)
    SNR: 0.588582021414536
    RA  =  18h 14m 20.1s  (273.583897 deg.)
    Dec = -17d  7' 57" (-17.132368 deg.)
 
  Angular difference between Flight and Ground position is 0.199918 arcmin
 
  Partial Coding Fraction: 0.796875    [ 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     0.174330   0.009148  -0.057061  -0.023927
           0.033215   0.030550   0.025929   0.022194 [error]
 Peak      0.174330   0.009148  -0.057061  -0.023927
           0.033215   0.030550   0.025929   0.022194 [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 4.05e-08 1.75e-08 4.48e-09 1.42e-09 6.33e-08 6.35e-08   erg/cm2
              Error 1.49e-08 1.20e-08 6.79e-09 4.44e-09 2.97e-08 3.12e-08   erg/cm2
Peak flux Power-law 4.16e-02 1.01e-02 1.28e-03 1.82e-04 5.33e-02 5.31e-02   ph/cm2/s
              Error 1.53e-02 6.76e-03 1.93e-03 5.48e-04 2.05e-02 2.05e-02   ph/cm2/s
 
Fluence   Cutoff-PL 4.05e-08 1.75e-08 4.48e-09 1.41e-09 6.33e-08 6.35e-08   erg/cm2
              Error 1.49e-08 1.20e-08 6.79e-09 4.40e-09 2.97e-08 3.12e-08   erg/cm2
Peak flux Cutoff-PL 4.16e-02 1.03e-02 1.32e-03 1.88e-04 5.33e-02 5.34e-02   ph/cm2/s
              Error 1.53e-02 6.76e-03 1.93e-03 5.45e-04 2.07e-02 2.08e-02   ph/cm2/s
 
Fluence        Band 7.34e-08 1.88e-08 2.44e-09 3.44e-11 6.74e-08 6.01e-07   erg/cm2
              Error 2.53e-08 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 4.54e-02 1.24e-02 4.50e-04 1.97e-06 5.83e-02 5.83e-02   ph/cm2/s
              Error 1.67e-02 7.97e-03 1.24e-03 1.59e-04 2.03e-02 2.05e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.927    1.144    -      -           9.24e-05 1.07e-04   54.601 57
CPL   1.761    0.000       2.7   25.8      4.63e-03 0.00e+00   52.405  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.927    1.144    -      -           9.24e-05 1.07e-04   54.601 57
CPL   1.761    0.000       2.7   25.8      4.63e-03 0.00e+00   52.405  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: 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
  273.5839 -17.1324 0.3260   16.5  106.0       0.0323     0.6  TRIG_00145011       
------------------------------------------
 
Foreground time interval of the image:
  0.000  33.053 (delta_t =  33.053 [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   33.053 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.92731     ( -0.876005   1.41132 )
Norm@50keV  : 9.241596E-05    ( -9.241596E-05   1.210730E-04) )
------------------------------------------------------------
 Chi-Squared =      54.60110     using    59 PHA bins.
 Reduced chi-squared =     0.9579140     for     57 degrees of freedom
 Null hypothesis probability = 0.566
 
Photon flux (15-150 keV)    in 33.05 sec: 5.334604E-02 ( -0.0199604  0.0209472 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.32544e-08 ( -2.73684e-08  3.20235e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   33.053 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.76137     (     )
Epeak [keV] : 2.67807      ( -6.17884 45.5004 )
Norm@50keV  : 4.629687E-03    (     )
------------------------------------------------------------
 Chi-Squared =      52.40520     using    59 PHA bins.
 but latest trial   44.7926     gives Chi-Squared =   16.2637
 Reduced chi-squared =     0.9358072     for     56 degrees of freedom
 Null hypothesis probability = 0.612
 
Photon flux (15-150 keV)    in 33.05 sec: 5.325680E-02 ( -0.0204189  0.0210157 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.32709e-08 ( -2.74146e-08  3.20192e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   33.053 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.88309   ( -8.05865   0.482719 )
beta        : -9.24471    ( -0.634096   6.10830 )
Epeak [keV] : 10.8326      ( -0.402953 213.925 )
Norm@50keV   : 4.568097E-04    ( -3.153510E-03   7.823439E-03) )
------------------------------------------------------------
 Chi-Squared =      64.66109     using    59 PHA bins.
 Reduced chi-squared =      1.175656     for     55 degrees of freedom
 Null hypothesis probability = 0.175
 
Photon flux (15-150 keV)    in 33.05 sec: 5.825407E-02 ( -0.0202693  0.0203464 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.74339e-08 ( -2.70765e-08  2.3568e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to   33.053 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.92731     ( -0.876005   1.41132 )
Norm@50keV  : 9.241596E-05    ( -9.241596E-05   1.210730E-04) )
------------------------------------------------------------
 Chi-Squared =      54.60110     using    59 PHA bins.
 Reduced chi-squared =     0.9579140     for     57 degrees of freedom
 Null hypothesis probability = 0.566
 
Photon flux (15-150 keV)    in 33.05 sec: 5.334604E-02 ( -0.0199604  0.0209472 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.32544e-08 ( -2.73684e-08  3.20235e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   33.053 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.76137     (     )
Epeak [keV] : 2.67807      ( -6.17884 45.5004 )
Norm@50keV  : 4.629687E-03    (     )
------------------------------------------------------------
 Chi-Squared =      52.40520     using    59 PHA bins.
 but latest trial   44.7926     gives Chi-Squared =   16.2637
 Reduced chi-squared =     0.9358072     for     56 degrees of freedom
 Null hypothesis probability = 0.612
 
Photon flux (15-150 keV)    in 33.05 sec: 5.325680E-02 ( -0.0204189  0.0210157 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.32709e-08 ( -2.74146e-08  3.20192e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   33.053 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.88309   ( -7.15147   0.482719 )
beta        : -9.24471    ( -1.38425   0.904175 )
Epeak [keV] : 10.8326      ( -10.7326 9989.17 )
Norm@50keV   : 4.568097E-04    ( -1.841581E-02   0.728592 )
------------------------------------------------------------
 Chi-Squared =      64.66109     using    59 PHA bins.
 Reduced chi-squared =      1.175656     for     55 degrees of freedom
 Null hypothesis probability = 0.175
 
Photon flux (15-150 keV)    in 33.05 sec: 5.825407E-02 ( -0.0202693  0.0203464 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.74339e-08 ( -2.70765e-08  2.3568e-08 ) ergs/cm2
 
Plot creation:
Mon Jan  7 12:42:12 EST 2008