batgrbproduct analysis for trigger=770431

batgrbproduct Analysis for Trigger=770431

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Sep  3 16:58:55 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger770431/GCN5_download_cron
======================================================================

  Trigger: 00770431      Segment: 000

  BAT Trigger Time: 526075256   [s; MET]
      Trigger Stop: 526075592   [s; MET]
               UTC: 2017-09-02T20:00:36.375020    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 233.894962307382   Dec: -57.2126198218771  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.61
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.61

  Flight Position:   [ source = BAT ]
    RA: 233.894962307382   Dec: -57.2126198218771  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 233.896347348079   Dec: -57.2098381474037  [deg; J2000]  
        { 15h 35m 35.1s , -57d 12' 35.4" }
         +/- 3.16511337029527 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.23469169207251 [arcmin] (formal 1-sigma fit error)
    SNR: 5.86511544616237
 
  Angular difference between Flight and Ground position is 0.172861 arcmin
 
  Partial Coding Fraction: 0.8828125    [ including projection effects ]

  Duration
     T90: 99.3319999575615 +/- 38.9083531309661
        Measured from: 474.444000124931
                   to: 573.776000082493     [s; relative to TRIGTIME]
     T50: 99.3319999575615 +/- 41.5748957347519
        Measured from: 474.444000124931
                   to: 573.776000082493     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 562.259999990463     
                   to: 563.259999990463     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 474.444000005722     
                   to: 573.776000022888     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.024121  -0.463503  -0.362754  -0.515022
           0.089619   0.102100   0.089021   0.106080 [error]
 Peak      0.017762   0.012615  -0.009646   0.020183
           0.010531   0.012564   0.010969   0.013735 [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 1.79e-07 2.87e-07 3.47e-07 8.23e-07 1.05e-06 1.64e-06   erg/cm2
              Error 4.41e-08 4.61e-08 8.81e-08 4.35e-07 2.05e-07 5.18e-07   erg/cm2
Peak flux Power-law 2.39e-02 2.10e-02 1.27e-02 1.16e-02 6.26e-02 6.92e-02   ph/cm2/s
              Error 6.00e-03 3.40e-03 3.12e-03 5.69e-03 1.01e-02 1.14e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.75e-07 2.95e-07 3.48e-07 5.51e-07 1.03e-06 1.37e-06   erg/cm2
              Error 4.88e-08 5.71e-08 9.24e-08 6.55e-07 2.27e-07 6.70e-07   erg/cm2
Peak flux Cutoff-PL 2.32e-02 2.16e-02 1.28e-02 8.49e-03 6.20e-02 6.61e-02   ph/cm2/s
              Error 6.69e-03 4.11e-03 3.26e-03 8.95e-03 1.04e-02 1.36e-02   ph/cm2/s
 
Fluence        Band 1.73e-07 2.94e-07 3.47e-07 5.32e-07 1.02e-06 1.35e-06   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.35e-02 2.14e-02 1.28e-02 9.66e-03 6.23e-02 6.74e-02   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.000    0.000    -      -           0.00e+00 0.00e+00    0.000  0
CPL   0.000    0.000       0.0    0.0      0.00e+00 0.00e+00    0.000  0
 
The chi2 of BB fit is 55.61 which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.000    0.000    -      -           0.00e+00 0.00e+00    0.000  0
CPL   0.000    0.000       0.0    0.0      0.00e+00 0.00e+00    0.000  0
 
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   99.332  474.444  573.776
T90    99.332  474.444  573.776
T50    99.332  474.444  573.776
Peak    1.000  562.260  563.260

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  233.8963 -57.2098 0.0328   16.8   46.7       1.6119     5.9  TRIG_00770431       
------------------------------------------
 
Foreground time interval of the image:
  0.000 243.030 (delta_t = 243.030 [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  474.444 sec. to  573.776 sec.
Usage: bat_spec_fit_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Cutoff power-law model
Time interval is from  474.444 sec. to  573.776 sec.
Usage: bat_spec_fit_cutoff_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/bat2/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Band function
Time interval is from  474.444 sec. to  573.776 sec.
Usage: bat_spec_fit_band_sys.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/bat2/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Single BB
Usage: bat_spec_fit_bb_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
Thermal bremsstrahlung (OTTB)
Usage: bat_spec_fit_brems_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
Double BB
Usage: bat_spec_fit_2bb_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            

Peak spectrum fit

Power-law model
Time interval is from  562.260 sec. to  563.260 sec.
Usage: bat_spec_fit_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Cutoff power-law model
Time interval is from  562.260 sec. to  563.260 sec.
Usage: bat_spec_fit_cutoff_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/bat2/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Band function
Time interval is from  562.260 sec. to  563.260 sec.
Usage: bat_spec_fit_band_sys.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/bat2/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Single BB
Usage: bat_spec_fit_bb_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
Thermal bremsstrahlung (OTTB)
Usage: bat_spec_fit_brems_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
Double BB
Usage: bat_spec_fit_2bb_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
Plot creation:
Sun Sep  3 17:12:45 EDT 2017