batgrbproduct Analysis for Trigger=143708

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Jan  7 11:42:39 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger143708/SDC
======================================================================

  Trigger: 00143708      Segment: 000

  BAT Trigger Time: 141910979.072   [s; MET]
      Trigger Stop: 141910980.096   [s; MET]
               UTC: 2005-07-01T11:42:59.472220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 227.286665301381   Dec: -59.4186472467233  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    14.22
     Image Trigger?:     NO
     Rate S/N Ratio:     26.3628526529281  [ if not an image trigger ]
     Image S/N Ratio:    14.22

  Flight Position:   [ source = BAT ]
    RA: 227.286665301381   Dec: -59.4186472467233  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 227.242614420106   Dec: -59.4030753957375  [deg; J2000]  
        { 15h 08m 58.2s , -59d 24' 11.1" }
         +/- 2.10773979595633 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.02620495451447 [arcmin] (formal 1-sigma fit error)
    SNR: 10.4838952294523
    RA  =  15h  8m 58.2s  (227.242614 deg.)
    Dec = -59d 24' 11" (-59.403075 deg.)
 
  Angular difference between Flight and Ground position is 1.637663 arcmin
 
  Partial Coding Fraction: 0.6796875    [ including projection effects ]

  Duration
     T90: 21.7800000011921 +/- 9.901072273182
        Measured from: -3.69200000166893
                   to: 18.0879999995232     [s; relative to TRIGTIME]
     T50: 7.71999999880791 +/- 0.663204356278342
        Measured from: 0.0160000026226044
                   to: 7.73600000143051     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 7.36399999260902     
                   to: 8.36399999260902     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.73199999332428     
                   to: 28.4079999923706     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.718773   0.913715   0.549427   0.154202
           0.031858   0.032479   0.028409   0.024150 [error]
 Peak      0.091950   0.123961   0.098730   0.036628
           0.006627   0.007189   0.006465   0.005246 [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 2.26e-07 3.69e-07 4.55e-07 1.11e-06 1.36e-06 2.19e-06   erg/cm2
              Error 1.88e-08 1.76e-08 2.91e-08 1.58e-07 6.76e-08 1.80e-07   erg/cm2
Peak flux Power-law 7.99e-01 8.90e-01 7.08e-01 9.33e-01 2.74e+00 3.33e+00   ph/cm2/s
              Error 1.02e-01 6.59e-02 5.49e-02 1.61e-01 1.80e-01 2.17e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.23e-07 3.71e-07 4.57e-07 1.03e-06 1.36e-06 2.01e-06   erg/cm2
              Error 2.17e-08 1.98e-08 2.89e-08 3.24e-07 6.80e-08 3.02e-07   erg/cm2
Peak flux Cutoff-PL 7.98e-01 8.90e-01 7.08e-01 9.27e-01 2.74e+00 3.32e+00   ph/cm2/s
              Error 1.02e-01 6.59e-02 5.50e-02 1.60e-01 1.80e-01 2.17e-01   ph/cm2/s
 
Fluence        Band 2.21e-07 3.73e-07 4.51e-07 1.07e-06 1.35e-06 2.15e-06   erg/cm2
              Error 1.74e-08 2.15e-08 3.11e-08 2.77e-07 7.16e-08 3.65e-07   erg/cm2
Peak flux      Band 7.91e-01 8.87e-01 7.10e-01 9.45e-01 2.74e+00 3.33e+00   ph/cm2/s
              Error 8.15e-02 4.44e-02 7.89e+03 1.06e-01 1.75e-01 2.11e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.696    0.089    -      -           4.45e-03 2.09e-04   64.436 57
CPL   1.651    0.239     386.3 5000.0      4.68e-03 1.34e-03   64.384 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.330    0.122    -      -           2.28e-02 1.44e-03   63.363 57
CPL   1.326    0.123    9999.1 5000.0      2.29e-02 1.45e-03   63.418 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: 8.064000 sec.
T50 in the 50-300 keV band: 4.608000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   33.140   -4.732   28.408
T90    21.780   -3.692   18.088
T50     7.720    0.016    7.736
Peak    1.000    7.364    8.364

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  227.2426 -59.4031 0.0184   19.5   82.1       1.5829    10.5  TRIG_00143708       
------------------------------------------
 
Foreground time interval of the image:
 -4.732  28.408 (delta_t =  33.140 [sec])
Background time interval of the image:
-10.072  -4.732 (delta_t =   5.340 [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   -4.732 sec. to   28.408 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.69611     ( -8.875608E-02   8.938134E-02) )
Norm@50keV  : 4.445248E-03    ( -2.094773E-04   2.083047E-04) )
------------------------------------------------------------
 Chi-Squared =      64.43581     using    59 PHA bins.
 Reduced chi-squared =      1.130453     for     57 degrees of freedom
 Null hypothesis probability = 0.233
 
Photon flux (15-150 keV)    in 33.14 sec: 0.589578 ( -0.028363  0.028494 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.36438e-06 ( -6.74001e-08  6.77481e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -4.732 sec. to   28.408 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65092     ( -0.345552   0.132707 )
Epeak [keV] : 386.331      ( -386.321 9613.67 )
Norm@50keV  : 4.683395E-03    ( -4.384085E-04   2.234536E-03) )
------------------------------------------------------------
 Chi-Squared =      64.38377     using    59 PHA bins.
 Reduced chi-squared =      1.149710     for     56 degrees of freedom
 Null hypothesis probability = 0.207
 
Photon flux (15-150 keV)    in 33.14 sec: 0.587588 ( -0.030629  0.029943 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.3593e-06 ( -6.91102e-08  6.69594e-08 ) ergs/cm2
 
Band function
Time interval is from   -4.732 sec. to   28.408 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.05066   ( -8.94934   3.55353 )
beta        : -1.72581    ( -8.27419   0.105003 )
Epeak [keV] : 42.7218      ( -42.6218 9957.28 )
Norm@50keV   : 1.230197E-02    ( -1.230197E-02   77.7515 )
------------------------------------------------------------
 Chi-Squared =      63.68615     using    59 PHA bins.
 Reduced chi-squared =      1.157930     for     55 degrees of freedom
 Null hypothesis probability = 0.197
 
Photon flux (15-150 keV)    in 33.14 sec: 0.582217 ( -0.032749  0.031549 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.34866e-06 ( -7.07274e-08  7.25501e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    7.364 sec. to    8.364 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32959     ( -0.122816   0.121943 )
Norm@50keV  : 2.284765E-02    ( -1.441032E-03   1.439547E-03) )
------------------------------------------------------------
 Chi-Squared =      63.36304     using    59 PHA bins.
 Reduced chi-squared =      1.111632     for     57 degrees of freedom
 Null hypothesis probability = 0.262
 
Photon flux (15-150 keV)    in 1.000 sec: 2.74118 ( -0.17983  0.18042 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24243e-07 ( -1.5938e-08  1.5927e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    7.364 sec. to    8.364 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32626     ( -0.123609   0.122718 )
Epeak [keV] : 9999.07      ( -9999.06 0.928711 )
Norm@50keV  : 2.293845E-02    ( -1.447555E-03   1.447180E-03) )
------------------------------------------------------------
 Chi-Squared =      63.41822     using    59 PHA bins.
 Reduced chi-squared =      1.132468     for     56 degrees of freedom
 Null hypothesis probability = 0.231
 
Photon flux (15-150 keV)    in 1.000 sec: 2.74011 ( -0.17977  0.18035 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.2422e-07 ( -1.5897e-08  1.5982e-08 ) ergs/cm2
 
Band function
Time interval is from    7.364 sec. to    8.364 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.995934   ( -9.00407   3.89212 )
beta        : -1.33049    ( -0.137987   0.123730 )
Epeak [keV] : 57.0427      ( -56.9427 468.657 )
Norm@50keV   : 4.413388E-02    ( -2.271470E-02   2.46740 )
------------------------------------------------------------
 Chi-Squared =      63.36129     using    59 PHA bins.
 Reduced chi-squared =      1.152023     for     55 degrees of freedom
 Null hypothesis probability = 0.205
 
Photon flux (15-150 keV)    in 1.000 sec: 2.73852 ( -0.1775  0.17217 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24007e-07 ( -1.5872e-08  1.6019e-08 ) ergs/cm2
 
Plot creation:
Mon Jan  7 11:52:37 EST 2008