batgrbproduct Analysis for Trigger=292004

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Fri Dec 14 15:09:14 EST 2007
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger292004/GCN5_download_cron
======================================================================

  Trigger: 00292004      Segment: 000

  BAT Trigger Time: 212267725.932   [s; MET]
      Trigger Stop: 212267725.964   [s; MET]
               UTC: 2007-09-23T19:15:23.687760    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 184.626373075231   Dec: -38.2677479658261  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.29
     Image Trigger?:     NO
     Rate S/N Ratio:     45.9673797382448  [ if not an image trigger ]
     Image S/N Ratio:    9.29

  Flight Position:   [ source = BAT ]
    RA: 184.626373075231   Dec: -38.2677479658261  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 184.622760038075   Dec: -38.2939136448864  [deg; J2000]  
        { 12h 18m 29.5s , -38d 17' 38.1" }
         +/- 2.06703394812414 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.889287694931086 [arcmin] (formal 1-sigma fit error)
    SNR: 10.7800753180888
    RA  =  12h 18m 29.5s  (184.622760 deg.)
    Dec = -38d 17' 38" (-38.293914 deg.)
 
  Angular difference between Flight and Ground position is 1.579136 arcmin
 
  Partial Coding Fraction: 0.75    [ including projection effects ]

  Duration
     T90: 0.175999999046326 +/- 0.0505964225831327
        Measured from: -0.0120000243186951
                   to: 0.163999974727631     [s; relative to TRIGTIME]
     T50: 0.0319999754428864 +/- 0.0640000104904175
        Measured from: 0.0039999783039093
                   to: 0.0359999537467957     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.400000005960464     
                   to: 0.599999994039536     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0120000243186951     
                   to: 0.195999979972839     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.014353   0.023059   0.025759   0.012454
           0.003236   0.003515   0.003556   0.003064 [error]
 Peak      0.013924   0.023236   0.026004   0.012576
           0.003322   0.003575   0.003630   0.003159 [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 3.84e-09 9.44e-09 1.86e-08 9.05e-08 5.02e-08 1.07e-07   erg/cm2
              Error 1.21e-09 1.73e-09 3.30e-09 3.92e-08 8.61e-09 0.00e+00   erg/cm2
Peak flux Power-law 5.38e-01 7.33e-01 7.30e-01 1.33e+00 2.43e+00 3.32e+00   ph/cm2/s
              Error 1.76e-01 1.40e-01 1.24e-01 5.02e-01 3.67e-01 5.78e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.76e-09 9.43e-09 1.86e-08 9.02e-08 5.02e-08 1.10e-07   erg/cm2
              Error 1.21e-09 1.73e-09 3.30e-09 3.90e-08 8.62e-09 0.00e+00   erg/cm2
Peak flux Cutoff-PL 5.38e-01 7.31e-01 7.31e-01 1.31e+00 2.43e+00 3.31e+00   ph/cm2/s
              Error 1.77e-01 1.41e-01 1.25e-01 5.20e-01 3.77e-01 5.80e-01   ph/cm2/s
 
Fluence        Band 3.78e-09 9.39e-09 1.86e-08 9.01e-08 5.02e-08 6.49e-08   erg/cm2
              Error 1.20e-09 1.72e-09 3.30e-09 3.75e-08 8.61e-09 0.00e+00   erg/cm2
Peak flux      Band 5.44e-01 7.35e-01 7.35e-01 1.35e+00 2.42e+00 3.30e+00   ph/cm2/s
              Error 1.88e-01 1.36e-01 1.21e-01 8.15e-01 3.75e-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    1.021    0.290    -      -           2.25e-02 3.40e-03   56.616 57
CPL   1.016    0.292    9999.0 5000.0      2.26e-02 3.41e-03   56.629 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.001    0.292    -      -           2.11e-02 3.22e-03   59.579 57
CPL   0.995    0.294    9991.8 5000.0      2.12e-02 3.23e-03   59.589 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: 0.064000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.208   -0.012    0.196
T90     0.176   -0.012    0.164
T50     0.032    0.004    0.036
Peak    1.000   -0.400    0.600

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  184.6228 -38.2939 0.0178   20.1  -92.4       0.0759    10.8  TRIG_00292004       
------------------------------------------
 
Foreground time interval of the image:
  0.160   0.368 (delta_t =   0.208 [sec])
Background time interval of the image:
-239.760 -227.480 (delta_t =  12.280 [sec])
-226.760 -57.680 (delta_t = 169.080 [sec])
-56.760   0.160 (delta_t =  56.920 [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    0.160 sec. to    0.368 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.02108     ( -0.295346   0.284098 )
Norm@50keV  : 2.248988E-02    ( -3.399739E-03   3.390901E-03) )
------------------------------------------------------------
 Chi-Squared =      56.61627     using    59 PHA bins.
 Reduced chi-squared =     0.9932678     for     57 degrees of freedom
 Null hypothesis probability = 0.489
 
Photon flux (15-150 keV)    in 0.2080 sec: 2.59268 ( -0.39807  0.39902 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.017e-08 ( -8.52488e-09  8.69814e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.160 sec. to    0.368 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.01575     ( -0.297783   0.286035 )
Epeak [keV] : 9998.98      ( -9998.97 1.02148 )
Norm@50keV  : 2.262253E-02    ( -3.415002E-03   3.407689E-03) )
------------------------------------------------------------
 Chi-Squared =      56.62946     using    59 PHA bins.
 Reduced chi-squared =      1.011240     for     56 degrees of freedom
 Null hypothesis probability = 0.451
 
Photon flux (15-150 keV)    in 0.2080 sec: 2.59160 ( -0.39782  0.39907 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.02345e-08 ( -8.58291e-09  8.66632e-09 ) ergs/cm2
 
Band function
Time interval is from    0.160 sec. to    0.368 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.850240   ( -10.5898   4.41024 )
beta        : -1.02108    ( -0.318878   0.300054 )
Epeak [keV] : 56.2905      ( -33.9071 810.483 )
Norm@50keV   : 3.621173E-02    ( -0.454917   2262.95 )
------------------------------------------------------------
 Chi-Squared =      56.61627     using    59 PHA bins.
 Reduced chi-squared =      1.029387     for     55 degrees of freedom
 Null hypothesis probability = 0.414
 
Photon flux (15-150 keV)    in 0.2080 sec: 2.59159 ( -0.39781  0.39908 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.01752e-08 ( -8.55275e-09  8.67131e-09 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.160 sec. to    0.384 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00057     ( -0.298168   0.286107 )
Norm@50keV  : 2.107906E-02    ( -3.225809E-03   3.213558E-03) )
------------------------------------------------------------
 Chi-Squared =      59.57885     using    59 PHA bins.
 Reduced chi-squared =      1.045243     for     57 degrees of freedom
 Null hypothesis probability = 0.382
 
Photon flux (15-150 keV)    in 0.2240 sec: 2.42807 ( -0.36871  0.36527 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.09425e-08 ( -8.64528e-09  8.93782e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.160 sec. to    0.384 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.994976     ( -0.300607   0.288127 )
Epeak [keV] : 9991.80      ( -9991.79 8.20020 )
Norm@50keV  : 2.120610E-02    ( -3.239654E-03   3.229173E-03) )
------------------------------------------------------------
 Chi-Squared =      59.58905     using    59 PHA bins.
 Reduced chi-squared =      1.064090     for     56 degrees of freedom
 Null hypothesis probability = 0.346
 
Photon flux (15-150 keV)    in 0.2240 sec: 2.42617 ( -0.37605  0.37749 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.10469e-08 ( -8.73645e-09  8.87085e-09 ) ergs/cm2
 
Band function
Time interval is from    0.160 sec. to    0.384 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.845160   ( -10.1148   2.63908 )
beta        : -1.00057    ( -8.98938   0.305053 )
Epeak [keV] : 53.9319      ( -41.5426 265.309 )
Norm@50keV   : 3.323448E-02    ( -0.144989   1539.39 )
------------------------------------------------------------
 Chi-Squared =      59.57885     using    59 PHA bins.
 Reduced chi-squared =      1.083252     for     55 degrees of freedom
 Null hypothesis probability = 0.313
 
Photon flux (15-150 keV)    in 0.2240 sec: 2.41931 ( -0.38063  0.36902 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.10093e-08 ( -8.7313e-09  8.86189e-09 ) ergs/cm2
 
Plot creation:
Fri Dec 14 15:39:52 EST 2007