batgrbproduct Analysis for Trigger=155572

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Jan  9 12:13:52 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger155572/GCN5_download_cron
======================================================================

  Trigger: 00155572      Segment: 000

  BAT Trigger Time: 148672984   [s; MET]
      Trigger Stop: 148673048   [s; MET]
               UTC: 2005-09-17T18:03:04.265740    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 79.1091664062453   Dec: -62.5822836108812  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    33310
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    33310

  Flight Position:   [ source = BAT ]
    RA: 79.1091664062453   Dec: -62.5822836108812  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 79.1096295998996   Dec: -62.5376366401799  [deg; J2000]  
        { 05h 16m 26.3s , -62d 32' 15.5" }
         +/- 4.82835068021219 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.10955596538546 [arcmin] (formal 1-sigma fit error)
    SNR: 3.2082111518084
    RA  =   5h 16m 26.3s  (79.109630 deg.)
    Dec = -62d 32' 15" (-62.537637 deg.)
 
  Angular difference between Flight and Ground position is 2.678849 arcmin
 
  Partial Coding Fraction: 0.6796875    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.128204   0.066177  -0.015254   0.026533
           0.032302   0.032541   0.028738   0.025272 [error]
 Peak      0.128204   0.066177  -0.015254   0.026533
           0.032302   0.032541   0.028738   0.025272 [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 3.34e-08 2.74e-08 1.53e-08 1.26e-08 8.16e-08 8.72e-08   erg/cm2
              Error 1.54e-08 1.60e-08 1.84e-08 3.14e-08 4.69e-08 6.39e-08   erg/cm2
Peak flux Power-law 3.52e-02 1.63e-02 4.54e-03 1.58e-03 5.69e-02 5.77e-02   ph/cm2/s
              Error 1.65e-02 9.15e-03 5.31e-03 3.57e-03 2.53e-02 2.62e-02   ph/cm2/s
 
Fluence   Cutoff-PL 3.82e-08 3.14e-08 1.57e-09 5.72e-13 7.12e-08 7.14e-08   erg/cm2
              Error 1.71e-08 2.12e-08 9.39e-09 3.65e-09 3.16e-08 3.16e-08   erg/cm2
Peak flux Cutoff-PL 3.92e-02 1.96e-02 5.50e-04 1.05e-07 5.94e-02 5.94e-02   ph/cm2/s
              Error 1.78e-02 1.22e-02 2.87e-03 5.25e-04 2.36e-02 2.36e-02   ph/cm2/s
 
Fluence        Band 3.23e-08 2.84e-08 1.71e-08 1.71e-08 9.23e-08 1.07e-07   erg/cm2
              Error 1.44e-08 1.27e-08 1.83e-08 1.18e-08 4.37e-08 0.00e+00   erg/cm2
Peak flux      Band 3.60e-02 1.93e-02 2.66e-03 1.23e-04 5.89e-02 5.85e-02   ph/cm2/s
              Error 1.53e-02 9.42e-03 4.41e-03 2.57e-03 2.46e-02 2.51e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.786    1.039    -      -           2.42e-04 2.24e-04   50.192 57
CPL  -2.447    0.000      22.2    7.1      2.00e+00 1.43e+01   47.227 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.786    1.039    -      -           2.42e-04 2.24e-04   50.192 57
CPL  -2.447    0.000      22.2    7.1      2.00e+00 1.43e+01   47.227 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   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   79.1096 -62.5376 0.0600   34.5   -5.1       0.2171     3.2  TRIG_00155572       
------------------------------------------
 
Foreground time interval of the image:
  0.000   9.188 (delta_t =   9.188 [sec])
 10.000  31.163 (delta_t =  21.163 [sec])
 32.000  33.040 (delta_t =   1.040 [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
Multiple GTIs in the spectrum
tstart tstop
0.000000 9.187600
10.000000 31.162800
32.000000 33.040000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.78567     ( -0.802687   1.27440 )
Norm@50keV  : 2.421526E-04    ( -2.421526E-04   2.059536E-04) )
------------------------------------------------------------
 Chi-Squared =      50.19151     using    59 PHA bins.
 Reduced chi-squared =     0.8805527     for     57 degrees of freedom
 Null hypothesis probability = 0.726
 
Photon flux (15-150 keV)    in 31.39 sec: 5.693753E-02 ( -0.0249046  0.0257005 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.16168e-08 ( -4.20752e-08  5.17558e-08 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 9.187600
10.000000 31.162800
32.000000 33.040000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.44738     (     )
Epeak [keV] : 22.2437      ( -6.01526 8.13536 )
Norm@50keV  : 2.00468    ( -5.27243   23.4129 )
------------------------------------------------------------
 Chi-Squared =      47.22684     using    59 PHA bins.
 Reduced chi-squared =     0.8433365     for     56 degrees of freedom
 Null hypothesis probability = 0.792
 
Photon flux (15-150 keV)    in 31.39 sec: 5.940790E-02 ( -0.0236452  0.0236361 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.11567e-08 ( -3.01237e-08  3.30424e-08 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 9.187600
10.000000 31.162800
32.000000 33.040000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.33008   ( -14.8635   0.136522 )
beta        : -3.66556    ( -6.33444   13.4713 )
Epeak [keV] : 17.9649      ( -9.56611 103.374 )
Norm@50keV   : 1.956596E-03    ( -143.057   1317.15 )
------------------------------------------------------------
 Chi-Squared =      49.52255     using    59 PHA bins.
 Reduced chi-squared =     0.9004101     for     55 degrees of freedom
 Null hypothesis probability = 0.683
 
Photon flux (15-150 keV)    in 31.39 sec: 5.889684E-02 ( -0.0245566  0.0245877 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.23491e-08 ( -4.39228e-08  4.34372e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   32.000 sec. to   33.040 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.78567     ( -0.802687   1.27440 )
Norm@50keV  : 2.421526E-04    ( -2.421526E-04   2.059536E-04) )
------------------------------------------------------------
 Chi-Squared =      50.19151     using    59 PHA bins.
 Reduced chi-squared =     0.8805527     for     57 degrees of freedom
 Null hypothesis probability = 0.726
 
Photon flux (15-150 keV)    in 31.39 sec: 5.693753E-02 ( -0.0249046  0.0257005 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.16168e-08 ( -4.20752e-08  5.17558e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   32.000 sec. to   33.040 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.44738     (     )
Epeak [keV] : 22.2437      ( -6.01526 8.13536 )
Norm@50keV  : 2.00468    ( -5.27243   23.4129 )
------------------------------------------------------------
 Chi-Squared =      47.22684     using    59 PHA bins.
 Reduced chi-squared =     0.8433365     for     56 degrees of freedom
 Null hypothesis probability = 0.792
 
Photon flux (15-150 keV)    in 31.39 sec: 5.940790E-02 ( -0.0236452  0.0236361 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.11567e-08 ( -3.01237e-08  3.30424e-08 ) ergs/cm2
 
Band function
Time interval is from   32.000 sec. to   33.040 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.33008   ( -14.8635   0.136522 )
beta        : -3.66556    ( -6.33444   1.38617 )
Epeak [keV] : 17.9649      ( -9.56893 103.374 )
Norm@50keV   : 1.956596E-03    ( -143.057   1317.15 )
------------------------------------------------------------
 Chi-Squared =      49.52255     using    59 PHA bins.
 Reduced chi-squared =     0.9004101     for     55 degrees of freedom
 Null hypothesis probability = 0.683
 
Photon flux (15-150 keV)    in 31.39 sec: 5.889684E-02 ( -0.0245566  0.0245877 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.23491e-08 ( -4.39228e-08  4.34372e-08 ) ergs/cm2
 
Plot creation:
Wed Jan  9 12:19:21 EST 2008