batgrbproduct analysis for trigger=846740

batgrbproduct Analysis for Trigger=846740

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Jul  9 12:17:48 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger846740/GCN5_download_cron
======================================================================

  Trigger: 00846740      Segment: 000

  BAT Trigger Time: 552749640   [s; MET]
      Trigger Stop: 552749728   [s; MET]
               UTC: 2018-07-08T13:33:38.769060    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 198.918909891462   Dec: 41.8972108811188  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    5.93
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    5.93

  Flight Position:   [ source = BAT ]
    RA: 198.918909891462   Dec: 41.8972108811188  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 198.900945930262   Dec: 41.8738272304255  [deg; J2000]  
        { 13h 15m 36.2s , +41d 52' 25.8" }
         +/- 4.14277473743776 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.45642827693538 [arcmin] (formal 1-sigma fit error)
    SNR: 3.99276397278939
 
  Angular difference between Flight and Ground position is 1.616278 arcmin
 
  Partial Coding Fraction: 0.3671875    [ including projection effects ]

  Duration
     T90: 1.15199983119965 +/- 0.0640000104904175
        Measured from: 140.904000163078
                   to: 142.055999994278     [s; relative to TRIGTIME]
     T50: 0.575999975204468 +/- 0.064
        Measured from: 141.09600007534
                   to: 141.672000050545     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 141.427999973297     
                   to: 142.427999973297     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 140.840000033379     
                   to: 142.120000004768     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    -0.020253  -0.009096  -0.023845  -0.007887
           0.006186   0.006425   0.005738   0.005234 [error]
 Peak     -0.007554  -0.001785  -0.012029  -0.001991
           0.005431   0.005616   0.004962   0.004552 [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 1.05e-07 1.28e-07 1.14e-07 1.74e-07 4.07e-07 5.21e-07   erg/cm2
              Error 4.41e-08 4.69e-08 7.00e-08 2.36e-07 1.72e-07 3.10e-07   erg/cm2
Peak flux Power-law 3.89e-02 2.64e-02 1.17e-02 7.21e-03 8.05e-02 8.41e-02   ph/cm2/s
              Error 1.67e-02 9.48e-03 6.99e-03 9.10e-03 2.80e-02 2.96e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.05e-07 1.73e-07 1.29e-08 3.25e-12 2.91e-07 2.91e-07   erg/cm2
              Error 5.26e-08 7.62e-08 5.01e-08 8.21e-09 1.08e-07 1.08e-07   erg/cm2
Peak flux Cutoff-PL 3.71e-02 3.74e-02 1.63e-03 2.17e-07 7.61e-02 7.61e-02   ph/cm2/s
              Error 1.95e-02 1.14e-02 5.50e-03 4.79e-04 2.54e-02 2.54e-02   ph/cm2/s
 
Fluence        Band 1.05e-07 1.74e-07 3.08e-08 3.13e-09 3.14e-07 3.13e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   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 67.73 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    1.280  140.840  142.120
T90     1.152  140.904  142.056
T50     0.576  141.096  141.672
Peak    1.000  141.428  142.428

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  198.9009 +41.8738 0.0481   38.4 -132.1       0.8735     4.0  TRIG_00846740       
------------------------------------------
 
Foreground time interval of the image:
  0.000  88.000 (delta_t =  88.000 [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  140.840 sec. to  142.120 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  140.840 sec. to  142.120 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  140.840 sec. to  142.120 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  141.428 sec. to  142.428 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  141.428 sec. to  142.428 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  141.428 sec. to  142.428 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:
Mon Jul  9 12:20:46 EDT 2018