batgrbproduct Analysis for Trigger=355915

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Mon Jun 29 01:53:31 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger355915/GCN5_download_cron
======================================================================

  Trigger: 00355915      Segment: 000

  BAT Trigger Time: 267874934.04   [s; MET]
      Trigger Stop: 267874934.104   [s; MET]
               UTC: 2009-06-28T09:42:09.175080    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 170.653839855756   Dec: 61.8169103763556  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.66
     Image Trigger?:     NO
     Rate S/N Ratio:     9.16515138991168  [ if not an image trigger ]
     Image S/N Ratio:    5.66

  Flight Position:   [ source = BAT ]
    RA: 170.653839855756   Dec: 61.8169103763556  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 170.590867165083   Dec: 61.7681143895358  [deg; J2000]  
        { 11h 22m 21.8s , +61d 46' 05.2" }
         +/- 4.62300867108439 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.32949015703133 [arcmin] (formal 1-sigma fit error)
    SNR: 3.41370462046168
 
  Angular difference between Flight and Ground position is 3.429464 arcmin
 
  Partial Coding Fraction: 0.625    [ including projection effects ]

  Duration
     T90: 0.0640000104904175 +/- 
        Measured from: 0
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     T50: 0.0640000104904175 +/- 
        Measured from: 0
                   to: 0.0640000104904175     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.0640000104904175 second)
        Measured from: 0     
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.000124  -0.001762   0.005324   0.009136
           0.001827   0.001876   0.001822   0.002027 [error]
 Peak      0.000124  -0.001762   0.005324   0.009136
           0.001827   0.001876   0.001822   0.002027 [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 8.67e-11 3.74e-10 1.36e-09 1.75e-08 3.94e-09 1.92e-08   erg/cm2
              Error 2.29e-10 5.51e-10 1.36e-09 3.66e-08 3.94e-09 3.70e-08   erg/cm2
Peak flux Power-law 4.25e-02 9.77e-02 1.78e-01 7.71e-01 4.84e-01 1.09e+00   ph/cm2/s
              Error 1.15e-01 1.48e-01 1.82e-01 1.36e+00 5.31e-01 1.41e+00   ph/cm2/s
 
Fluence   Cutoff-PL 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux Cutoff-PL 1.28e-02 8.47e-02 2.72e-01 7.08e-01 0.00e+00 0.00e+00   ph/cm2/s
              Error 7.96e-02 1.37e-01 2.61e-01 9.87e-01 0.00e+00 0.00e+00   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.111    1.186    -      -           3.64e-03 4.57e-03   66.240 57
CPL  -4.989    0.000     123.0  135.0      5.66e-02 9.01e-02   64.590 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.111    1.186    -      -           3.64e-03 4.57e-03   66.240 57
CPL  -4.989    0.000     123.0  135.0      5.66e-02 9.01e-02   64.590 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    0.064    0.000    0.064
T90     0.064    0.000    0.064
T50     0.064    0.000    0.064
Peak    0.064    0.000    0.064

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  170.5909 +61.7681 0.0565   35.9 -152.1       0.0129     3.4  TRIG_00355915       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.064 (delta_t =   0.064 [sec])
Background time interval of the image:
-60.040  -6.040 (delta_t =  54.000 [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    0.000 sec. to    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.111165     ( -0.150672   2.22112 )
Norm@50keV  : 3.63819E-03    ( -0.0037041   0.00542853 )
------------------------------------------------------------
# Chi-Squared =          66.24 using 59 PHA bins.
# Reduced chi-squared =          1.162 for     57 degrees of freedom 
# Null hypothesis probability =   1.883590e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.483774 ( -0.483817  0.577225 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.94104e-09 ( -3.94104e-09  3.94245e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.98865     (     )
Epeak [keV] : 123.031      ( -62.641 207.442 )
Norm@50keV  : 5.65919E-02    ( -0.056593   0.123541 )
------------------------------------------------------------
# Chi-Squared =          64.59 using 59 PHA bins.
# Reduced chi-squared =          1.153 for     56 degrees of freedom 
# Null hypothesis probability =   2.015356e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.38404   ( -10.2318   -0.93123 )
beta        : -10.00000    ( 2.20421e+10   2.20421e+10 )
Epeak [keV] : 128.348      ( -66.6722 -127.773 )
Norm@50keV   : 4.18943E-02    ( -0.0421894   0.105572 )
------------------------------------------------------------
# Chi-Squared =          64.65 using 59 PHA bins.
# Reduced chi-squared =          1.175 for     55 degrees of freedom 
# Null hypothesis probability =   1.752589e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.111165     ( -0.150672   2.22112 )
Norm@50keV  : 3.63819E-03    ( -0.0037041   0.00542853 )
------------------------------------------------------------
# Chi-Squared =          66.24 using 59 PHA bins.
# Reduced chi-squared =          1.162 for     57 degrees of freedom 
# Null hypothesis probability =   1.883590e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 0.483774 ( -0.483817  0.577225 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.94104e-09 ( -3.94104e-09  3.94245e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.98865     (     )
Epeak [keV] : 123.031      ( -62.6414 207.442 )
Norm@50keV  : 5.65919E-02    ( -0.056593   0.123541 )
------------------------------------------------------------
# Chi-Squared =          64.59 using 59 PHA bins.
# Reduced chi-squared =          1.153 for     56 degrees of freedom 
# Null hypothesis probability =   2.015356e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.38404   ( -10.2752   -0.93123 )
beta        : -10.00000    ( 2.20421e+10   2.20421e+10 )
Epeak [keV] : 128.348      ( -66.6722 -127.773 )
Norm@50keV   : 4.18943E-02    ( -0.0421894   0.105572 )
------------------------------------------------------------
# Chi-Squared =          64.65 using 59 PHA bins.
# Reduced chi-squared =          1.175 for     55 degrees of freedom 
# Null hypothesis probability =   1.752589e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Mon Jun 29 02:02:49 EDT 2009