batgrbproduct Analysis for Trigger=145729

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Jan  7 14:46:42 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger145729/SDC
======================================================================

  Trigger: 00145729      Segment: 000

  BAT Trigger Time: 142937421.444   [s; MET]
      Trigger Stop: 142937421.476   [s; MET]
               UTC: 2005-07-13T08:50:21.824520    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 47.028342861242   Dec: 58.2724416660759  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    33371
     Image Trigger?:     NO
     Rate S/N Ratio:     9.05538513813742  [ if not an image trigger ]
     Image S/N Ratio:    33371

  Flight Position:   [ source = BAT ]
    RA: 47.028342861242   Dec: 58.2724416660759  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 46.9676378124904   Dec: 58.3255236669432  [deg; J2000]  
        { 03h 07m 52.2s , +58d 19' 31.9" }
         +/- 4.02762011819545 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.30002688549889 [arcmin] (formal 1-sigma fit error)
    SNR: 4.156840663539
    RA  =   3h  7m 52.2s  (46.967638 deg.)
    Dec =  58d 19' 32" (58.325524 deg.)
 
  Angular difference between Flight and Ground position is 3.715783 arcmin
 
  Partial Coding Fraction: 0.5703125    [ including projection effects ]

  Duration
     T90: 0.0320000052452087 +/- 
        Measured from: 0
                   to: 0.0320000052452087     [s; relative to TRIGTIME]
     T50: 0.0320000052452087 +/- 
        Measured from: 0
                   to: 0.0320000052452087     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.0320000052452087 second)
        Measured from: 0     
                   to: 0.0320000052452087     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.0320000052452087     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    -0.000801   0.000321   0.004347   0.004003
           0.001010   0.001270   0.001193   0.001300 [error]
 Peak     -0.000801   0.000321   0.004347   0.004003
           0.001010   0.001270   0.001193   0.001300 [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 1.10e-10 2.42e-12 1.34e-14 7.44e-17 1.12e-10 0.00e+00   erg/cm2
              Error 2.21e-10 2.37e-11 2.57e-12 6.91e-11 2.34e-10 0.00e+00   erg/cm2
Peak flux Power-law 1.26e-01 1.67e-03 4.62e-06 1.28e-08 1.29e-01 0.00e+00   ph/cm2/s
              Error 2.50e-01 1.54e-02 7.50e-04 5.60e-03 2.59e-01 0.00e+00   ph/cm2/s
 
Fluence   Cutoff-PL 1.10e-10 2.42e-12 1.33e-14 7.35e-17 1.12e-10 0.00e+00   erg/cm2
              Error 2.21e-10 2.39e-11 2.65e-12 2.08e-10 2.34e-10 0.00e+00   erg/cm2
Peak flux Cutoff-PL 1.27e-01 1.67e-03 4.60e-06 1.27e-08 1.29e-01 0.00e+00   ph/cm2/s
              Error 2.50e-01 1.54e-02 7.50e-04 1.54e-02 2.59e-01 0.00e+00   ph/cm2/s
 
Fluence        Band 0.00e+00 2.64e-12 1.69e-14 1.08e-16 1.18e-10 0.00e+00   erg/cm2
              Error 1.60e+10 2.89e-12 3.03e-12 2.77e-08 1.54e-11 0.00e+00   erg/cm2
Peak flux      Band 1.27e-01 1.78e-03 5.38e-06 1.63e-08 1.29e-01 0.00e+00   ph/cm2/s
              Error 4.54e-01 1.23e-02 9.56e-05 8.64e-02 2.90e+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    1.500    6.500    -      -           0.00e+00 6.96e-05   56.552 57
CPL   1.000    6.500      50.0 5000.0      0.00e+00 1.76e-01   56.552 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.500    6.500    -      -           0.00e+00 6.96e-05   56.552 57
CPL   1.000    6.500      50.0 5000.0      0.00e+00 1.76e-01   56.552 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    0.032    0.000    0.032
T90     0.032    0.000    0.032
T50     0.032    0.000    0.032
Peak    0.032    0.000    0.032

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   46.9676 +58.3255 0.0461   33.2  -43.0       0.0097     4.2  TRIG_00145729       
------------------------------------------
 
Foreground time interval of the image:
  0.004   0.036 (delta_t =   0.032 [sec])
Background time interval of the image:
-178.235  -5.440 (delta_t = 172.795 [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    0.004 sec. to    0.036 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50000     ( -4.50000   8.50000 )
Norm@50keV  : 0.00000    ( 0.00000   1.391455E-04) )
------------------------------------------------------------
 Chi-Squared =      56.55229     using    59 PHA bins.
 Reduced chi-squared =     0.9921454     for     57 degrees of freedom
 Null hypothesis probability = 0.492
 
Photon flux (15-150 keV)    in 3.2000E-02 sec: 0.129136 ( -0.129136  0.389016 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12464e-10 ( -1.12464e-10  3.56371e-10 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.004 sec. to    0.036 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     ( -4.00000   9.00000 )
Epeak [keV] : 50.0000      ( -49.9900 9950.00 )
Norm@50keV  : 0.00000    ( 0.00000   0.351577 )
------------------------------------------------------------
 Chi-Squared =      56.55229     using    59 PHA bins.
 Reduced chi-squared =      1.009862     for     56 degrees of freedom
 Null hypothesis probability = 0.454
 
Photon flux (15-150 keV)    in 3.2000E-02 sec: 0.128759 ( -0.128759  0.388436 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12193e-10 ( -1.12193e-10  3.56397e-10 ) ergs/cm2
 
Band function
Time interval is from    0.004 sec. to    0.036 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.983950   ( -9.01605   5.98395 )
beta        : -2.50000    ( -7.50000   12.5000 )
Epeak [keV] : 80.0000      ( -79.9000 9920.00 )
Norm@50keV   : 0.00000    ( -1.644992E-02   0.273966 )
------------------------------------------------------------
 Chi-Squared =      56.55229     using    59 PHA bins.
 Reduced chi-squared =      1.028223     for     55 degrees of freedom
 Null hypothesis probability = 0.417
 
Photon flux (15-150 keV)    in 3.2000E-02 sec: 0.128711 ( -0.128711  57.9334 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.17762e-10 ( -1.17762e-10  5.52003e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.004 sec. to    0.036 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50000     ( -4.50000   8.50000 )
Norm@50keV  : 0.00000    ( 0.00000   1.391455E-04) )
------------------------------------------------------------
 Chi-Squared =      56.55229     using    59 PHA bins.
 Reduced chi-squared =     0.9921454     for     57 degrees of freedom
 Null hypothesis probability = 0.492
 
Photon flux (15-150 keV)    in 3.2000E-02 sec: 0.129136 ( -0.129136  0.389016 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12464e-10 ( -1.12464e-10  3.56371e-10 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.004 sec. to    0.036 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     ( -4.00000   9.00000 )
Epeak [keV] : 50.0000      ( -49.9900 9950.00 )
Norm@50keV  : 0.00000    ( 0.00000   0.351577 )
------------------------------------------------------------
 Chi-Squared =      56.55229     using    59 PHA bins.
 Reduced chi-squared =      1.009862     for     56 degrees of freedom
 Null hypothesis probability = 0.454
 
Photon flux (15-150 keV)    in 3.2000E-02 sec: 0.128759 ( -0.128759  0.388436 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12193e-10 ( -1.12193e-10  3.56397e-10 ) ergs/cm2
 
Band function
Time interval is from    0.004 sec. to    0.036 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.983950   ( -9.01605   5.98395 )
beta        : -2.50000    ( -7.50000   12.5000 )
Epeak [keV] : 80.0000      ( -79.9000 9920.00 )
Norm@50keV   : 0.00000    ( -1.644992E-02   0.273966 )
------------------------------------------------------------
 Chi-Squared =      56.55229     using    59 PHA bins.
 Reduced chi-squared =      1.028223     for     55 degrees of freedom
 Null hypothesis probability = 0.417
 
Photon flux (15-150 keV)    in 3.2000E-02 sec: 0.128711 ( -0.128711  57.9334 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.17762e-10 ( -1.17762e-10  5.52003e-08 ) ergs/cm2
 
Plot creation:
Mon Jan  7 15:01:44 EST 2008