batgrbproduct Analysis for Trigger=143778

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Jan  7 11:55:53 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger143778/SDC
======================================================================

  Trigger: 00143778      Segment: 000

  BAT Trigger Time: 141946152   [s; MET]
      Trigger Stop: 141946328   [s; MET]
               UTC: 2005-07-01T21:29:12.399540    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 268.355718801199   Dec: -1.45077901647868  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.89
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    12.89

  Flight Position:   [ source = BAT ]
    RA: 268.355718801199   Dec: -1.45077901647868  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 268.347550623207   Dec: -1.44038060238041  [deg; J2000]  
        { 17h 53m 23.4s , -01d 26' 25.4" }
         +/- 1.73763649628572 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.7596828752185 [arcmin] (formal 1-sigma fit error)
    SNR: 13.8140145477403
    RA  =  17h 53m 23.4s  (268.347551 deg.)
    Dec =  -1d 26' 25" (-1.440381 deg.)
 
  Angular difference between Flight and Ground position is 0.793280 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 176 +/- 
        Measured from: 0
                   to: 176     [s; relative to TRIGTIME]
     T50: 176 +/- 
        Measured from: 0
                   to: 176     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 176 second)
        Measured from: 0     
                   to: 176     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 176     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.673104   0.686223   0.428759   0.126860
           0.065465   0.061447   0.053119   0.047410 [error]
 Peak      0.673104   0.686223   0.428759   0.126860
           0.065465   0.061447   0.053119   0.047410 [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 1.96e-07 2.87e-07 3.14e-07 6.43e-07 9.94e-07 1.44e-06   erg/cm2
              Error 3.09e-08 2.84e-08 5.23e-08 2.23e-07 1.18e-07 2.71e-07   erg/cm2
Peak flux Power-law 3.62e-02 2.93e-02 1.60e-02 1.28e-02 8.72e-02 9.42e-02   ph/cm2/s
              Error 5.82e-03 2.91e-03 2.56e-03 4.10e-03 8.75e-03 9.36e-03   ph/cm2/s
 
Fluence   Cutoff-PL 1.96e-07 2.88e-07 3.14e-07 6.37e-07 9.94e-07 1.44e-06   erg/cm2
              Error 3.09e-08 2.84e-08 5.23e-08 2.21e-07 1.18e-07 2.69e-07   erg/cm2
Peak flux Cutoff-PL 3.62e-02 2.93e-02 1.60e-02 1.27e-02 8.72e-02 9.41e-02   ph/cm2/s
              Error 5.82e-03 2.91e-03 2.56e-03 4.08e-03 8.75e-03 9.35e-03   ph/cm2/s
 
Fluence        Band 1.94e-07 2.86e-07 3.14e-07 6.44e-07 9.94e-07 1.45e-06   erg/cm2
              Error 6.44e-08 4.20e-07 3.70e-07 2.64e-07 5.92e-07 5.92e-07   erg/cm2
Peak flux      Band 3.58e-02 2.92e-02 1.61e-02 1.30e-02 8.71e-02 9.43e-02   ph/cm2/s
              Error 5.05e-03 3.05e-03 1.33e-03 4.10e-03 8.62e-03 9.34e-03   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.873    0.199    -      -           6.15e-04 7.26e-05   62.413 57
CPL   1.656    0.000      74.1    0.0      8.01e-04 4.42e-04   63.111 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.873    0.199    -      -           6.15e-04 7.26e-05   62.413 57
CPL   1.656    0.000      74.1    0.0      8.01e-04 4.42e-04   63.111 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  176.000    0.000  176.000
T90   176.000    0.000  176.000
T50   176.000    0.000  176.000
Peak  176.000    0.000  176.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  268.3476  -1.4404 0.0139    0.1 -156.6       1.9487    13.8  TRIG_00143778       
------------------------------------------
 
Foreground time interval of the image:
  0.000 176.000 (delta_t = 176.000 [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  176.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.87268     ( -0.195497   0.202747 )
Norm@50keV  : 6.145783E-04    ( -7.357332E-05   7.170055E-05) )
------------------------------------------------------------
 Chi-Squared =      62.41285     using    59 PHA bins.
 Reduced chi-squared =      1.094962     for     57 degrees of freedom
 Null hypothesis probability = 0.290
 
Photon flux (15-150 keV)    in 176.0 sec: 8.719320E-02 ( -0.00874248  0.00875524 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.94402e-07 ( -1.16598e-07  1.18758e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  176.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65551     (     )
Epeak [keV] : 74.0766      (   )
Norm@50keV  : 8.012366E-04    ( -8.986462E-05   7.937380E-04) )
------------------------------------------------------------
 Chi-Squared =      63.11093     using    59 PHA bins.
 Reduced chi-squared =      1.126981     for     56 degrees of freedom
 Null hypothesis probability = 0.240
 
Photon flux (15-150 keV)    in 176.0 sec: 8.715859E-02 ( -0.00873909  0.00875198 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.94344e-07 ( -1.16625e-07  1.18765e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  176.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.48178   ( -8.51822   6.48178 )
beta        : -1.87240    ( -0.203925   0.195088 )
Epeak [keV] : 13.3119      ( -13.2119 9986.69 )
Norm@50keV   : 1.701043E-03    ( -1.701043E-03   30.5983 )
------------------------------------------------------------
 Chi-Squared =      62.41286     using    59 PHA bins.
 Reduced chi-squared =      1.134779     for     55 degrees of freedom
 Null hypothesis probability = 0.230
 
Photon flux (15-150 keV)    in 176.0 sec: 8.711966E-02 ( -0.00862185  0.00861672 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.94099e-07 ( -1.029e-07  1.0804e-06 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to  176.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.87268     ( -0.195497   0.202747 )
Norm@50keV  : 6.145783E-04    ( -7.357332E-05   7.170055E-05) )
------------------------------------------------------------
 Chi-Squared =      62.41285     using    59 PHA bins.
 Reduced chi-squared =      1.094962     for     57 degrees of freedom
 Null hypothesis probability = 0.290
 
Photon flux (15-150 keV)    in 176.0 sec: 8.719320E-02 ( -0.00874248  0.00875524 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.94402e-07 ( -1.16598e-07  1.18758e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  176.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65551     (     )
Epeak [keV] : 74.0766      (   )
Norm@50keV  : 8.012366E-04    ( -8.986462E-05   7.937380E-04) )
------------------------------------------------------------
 Chi-Squared =      63.11093     using    59 PHA bins.
 Reduced chi-squared =      1.126981     for     56 degrees of freedom
 Null hypothesis probability = 0.240
 
Photon flux (15-150 keV)    in 176.0 sec: 8.715859E-02 ( -0.00873909  0.00875198 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.94344e-07 ( -1.16625e-07  1.18765e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  176.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.48178   ( -8.51822   6.48178 )
beta        : -1.87240    ( -0.203925   0.195088 )
Epeak [keV] : 13.3119      ( -13.2119 9986.69 )
Norm@50keV   : 1.701043E-03    ( -1.701043E-03   30.5983 )
------------------------------------------------------------
 Chi-Squared =      62.41286     using    59 PHA bins.
 Reduced chi-squared =      1.134779     for     55 degrees of freedom
 Null hypothesis probability = 0.230
 
Photon flux (15-150 keV)    in 176.0 sec: 8.711966E-02 ( -0.00862185  0.00861672 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.94099e-07 ( -1.029e-07  1.0804e-06 ) ergs/cm2
 
Plot creation:
Mon Jan  7 12:14:38 EST 2008