batgrbproduct Analysis for Trigger=155764

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Jan  9 12:20:25 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger155764/GCN5_download_cron
======================================================================

  Trigger: 00155764      Segment: 000

  BAT Trigger Time: 148765332.448   [s; MET]
      Trigger Stop: 148765332.832   [s; MET]
               UTC: 2005-09-18T19:42:12.711840    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) Expanded to TRIGTIME - 32 ms to TRIGTIME + 320 ms

  BAT 
    RA: 75.0981843685191   Dec: -13.3207855860069  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    33415
     Image Trigger?:     NO
     Rate S/N Ratio:     6.40312423743285  [ if not an image trigger ]
     Image S/N Ratio:    33415

  Flight Position:   [ source = BAT ]
    RA: 75.0981843685191   Dec: -13.3207855860069  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 75.3078497196333   Dec: -13.1472065898821  [deg; J2000]  
        { 05h 01m 13.9s , -13d 08' 49.9" }
         +/- nan [arcmin] (estimated 90% radius based on SNR)
         +/- 6.92412728533498 [arcmin] (formal 1-sigma fit error)
    SNR: -1.25887624110308
    RA  =   5h  1m 13.9s  (75.307850 deg.)
    Dec = -13d  8' 50" (-13.147207 deg.)
 
  Angular difference between Flight and Ground position is 16.075672 arcmin
 
  Partial Coding Fraction: 0.9375    [ including projection effects ]

  Duration
     T90: 0.38400000333786 +/- 
        Measured from: 0
                   to: 0.38400000333786     [s; relative to TRIGTIME]
     T50: 0.38400000333786 +/- 
        Measured from: 0
                   to: 0.38400000333786     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.38400000333786 second)
        Measured from: 0     
                   to: 0.38400000333786     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.38400000333786     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    -0.000975   0.004007  -0.000370  -0.000706
           0.002823   0.002908   0.002382   0.002136 [error]
 Peak     -0.000975   0.004007  -0.000370  -0.000706
           0.002823   0.002908   0.002382   0.002136 [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 4.00e-10 4.91e-10 4.35e-10 6.75e-10 1.56e-09 1.96e-09   erg/cm2
              Error 7.60e-10 8.27e-10 1.21e-09 3.97e-08 3.30e-09 4.01e-08   erg/cm2
Peak flux Power-law 3.41e-02 2.32e-02 1.03e-02 6.42e-03 7.06e-02 7.39e-02   ph/cm2/s
              Error 6.57e-02 3.92e-02 2.74e-02 2.46e-01 1.20e-01 2.35e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.70e-10 1.14e-09 3.96e-10 6.38e-12 1.99e-09 1.97e-09   erg/cm2
              Error 7.51e-10 1.43e-09 1.26e-09 3.59e-08 2.62e-09 2.63e-09   erg/cm2
Peak flux Cutoff-PL 3.85e-02 5.33e-02 1.05e-02 9.21e-05 1.01e-01 9.98e-02   ph/cm2/s
              Error 6.32e-02 6.64e-02 3.02e-02 2.18e-01 1.26e-01 1.26e-01   ph/cm2/s
 
Fluence        Band 4.06e-10 1.24e-09 4.51e-10 8.48e-12 2.12e-09 8.63e-10   erg/cm2
              Error 4.84e-10 1.53e-09 7.58e-10 4.62e-08 3.06e-09 3.48e-08   erg/cm2
Peak flux      Band 3.39e-02 4.74e-02 1.38e-02 4.06e-04 9.56e-02 9.50e-02   ph/cm2/s
              Error 4.89e-02 6.18e-02 3.14e-02 1.09e-01 1.24e-01 1.36e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.172    6.500    -      -           4.33e-04 8.83e-04   66.049 57
CPL  -2.500    0.000      37.1 5000.0      4.10e-01 5.00e+23   65.296 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.172    6.500    -      -           4.33e-04 8.83e-04   66.049 57
CPL  -2.500    0.000      37.1 5000.0      4.10e-01 5.00e+23   65.296 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    0.384    0.000    0.384
T90     0.384    0.000    0.384
T50     0.384    0.000    0.384
Peak    0.384    0.000    0.384

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   75.3078 -13.1472 0.1527   16.1  150.8      -0.0066    -1.3  TRIG_00155764       
------------------------------------------
 
Foreground time interval of the image:
 -0.032   0.352 (delta_t =   0.384 [sec])
Background time interval of the image:
-119.480 -116.515 (delta_t =   2.965 [sec])
-60.480 -31.557 (delta_t =  28.923 [sec])
-30.480  -4.480 (delta_t =  26.000 [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   -0.032 sec. to    0.352 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.17165     ( -5.17165   7.82835 )
Norm@50keV  : 4.327528E-04    ( -4.327528E-04   1.334228E-03) )
------------------------------------------------------------
 Chi-Squared =      66.04933     using    59 PHA bins.
 Reduced chi-squared =      1.158760     for     57 degrees of freedom
 Null hypothesis probability = 0.193
 
Photon flux (15-150 keV)    in 0.3840 sec: 7.061865E-02 ( -0.0706187  0.168682 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.56369e-09 ( -1.56369e-09  5.03432e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.032 sec. to    0.352 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.49983     (     )
Epeak [keV] : 37.1311      ( -36.7927 9963.20 )
Norm@50keV  : 0.410175    ( -0.843199   1.000000E+24) )
------------------------------------------------------------
 Chi-Squared =      65.29557     using    59 PHA bins.
 Reduced chi-squared =      1.165992     for     56 degrees of freedom
 Null hypothesis probability = 0.185
 
Photon flux (15-150 keV)    in 0.3840 sec: 0.101300 ( -0.1013  0.150346 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.9919e-09 ( -1.9919e-09  3.24433e-09 ) ergs/cm2
 
Band function
Time interval is from   -0.032 sec. to    0.352 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.590291   ( -14.9747   2.530718E-02) )
beta        : -9.35146    ( -0.632767   19.3672 )
Epeak [keV] : 35.9603      ( -35.8600 9964.04 )
Norm@50keV   : 2.722384E-02    ( -15.7909   2.701951E+07) )
------------------------------------------------------------
 Chi-Squared =      65.59351     using    59 PHA bins.
 Reduced chi-squared =      1.192609     for     55 degrees of freedom
 Null hypothesis probability = 0.155
 
Photon flux (15-150 keV)    in 0.3840 sec: 9.561935E-02 ( -0.0956194  0.15324 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.1178e-09 ( -2.1178e-09  3.99456e-09 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.032 sec. to    0.352 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.17165     ( -5.17165   7.82835 )
Norm@50keV  : 4.327528E-04    ( -4.327528E-04   1.334228E-03) )
------------------------------------------------------------
 Chi-Squared =      66.04933     using    59 PHA bins.
 Reduced chi-squared =      1.158760     for     57 degrees of freedom
 Null hypothesis probability = 0.193
 
Photon flux (15-150 keV)    in 0.3840 sec: 7.061865E-02 ( -0.0706187  0.168682 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.56369e-09 ( -1.56369e-09  5.03432e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.032 sec. to    0.352 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.49983     (     )
Epeak [keV] : 37.1311      ( -36.7927 9963.20 )
Norm@50keV  : 0.410175    ( -0.843199   1.000000E+24) )
------------------------------------------------------------
 Chi-Squared =      65.29557     using    59 PHA bins.
 Reduced chi-squared =      1.165992     for     56 degrees of freedom
 Null hypothesis probability = 0.185
 
Photon flux (15-150 keV)    in 0.3840 sec: 0.101300 ( -0.1013  0.150346 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.9919e-09 ( -1.9919e-09  3.24433e-09 ) ergs/cm2
 
Band function
Time interval is from   -0.032 sec. to    0.352 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.590291   ( -14.9747   2.530718E-02) )
beta        : -9.35146    ( -0.632767   19.3672 )
Epeak [keV] : 35.9603      ( -35.8600 9964.04 )
Norm@50keV   : 2.722384E-02    ( -15.7909   2.701951E+07) )
------------------------------------------------------------
 Chi-Squared =      65.59351     using    59 PHA bins.
 Reduced chi-squared =      1.192609     for     55 degrees of freedom
 Null hypothesis probability = 0.155
 
Photon flux (15-150 keV)    in 0.3840 sec: 9.561935E-02 ( -0.0956194  0.15324 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.1178e-09 ( -2.1178e-09  3.99456e-09 ) ergs/cm2
 
Plot creation:
Wed Jan  9 12:29:59 EST 2008