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
  • Click here for the BAT GCN circular template
  • Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte

    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                            
    

    Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

    Power-law model
    
    
    Cutoff power-law model
    
    
    Band function
    
    
    
    

    S(25-50 keV) vs. S(50-100 keV) plot

    S(25-50 keV)  = 2.87e-07
    S(50-100 keV) = 3.47e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 99.3319999575615 sec.
    Hardness ratio (energy fluence ratio) = 1.20906
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = -19.2157
    Count Ratio (50-100 keV) / (15-25 keV) = -15.0389
    

    Mask shadow pattern

    IMX = 2.073802865614133E-01, IMY = -2.200979077465725E-01
    

    TIME vs. PHA plot around the trigger time

    TIME vs. DetID plot around the trigger time

    100 us light curve (15-350 keV)

    Spacecraft aspect plot

    Bright source in the pre-burst/pre-slew/post-slew images

    Pre-burst image of 15-350 keV band

    Time interval of the image:
    -18.599400 352.500590
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5305 -40.5536    0.8  44.1 -133.5  11.8925  14.1    0.1	Vela X-1                      
    170.2591 -60.5836    1.6  15.0 -139.0   2.3605   7.4    2.9	Cen X-3                       
    186.6386 -62.7764    1.0   6.9 -142.8   3.7636  11.3    0.6	GX 301-2                      
    244.9994 -15.6149    2.6  55.6   12.4   7.6386   4.5    1.9	Sco X-1                       
    255.9617 -37.8598    4.2  40.7   38.5   1.7610   2.8    1.5	4U 1700-377                   
    256.5856 -36.3797   18.7  42.2   37.8   0.4093   0.6    7.7	GX 349+2                      
    264.7227 -44.4853   11.7  39.6   52.9   0.8474   1.0    2.3	4U 1735-44                    
    263.0662 -33.9684   26.2  47.2   42.1   0.5432   0.4    8.9	GX 354-0                      
    287.9079 -61.8574    3.1  37.5   88.4   3.8501   3.7 ------	UNKNOWN                       
    255.1337 -41.7302    3.8  37.3   41.4   1.8603   3.0 ------	UNKNOWN                       
    251.2009 -19.8484    3.9  54.2   21.1   5.0382   3.0 ------	UNKNOWN                       
    233.8846 -57.2062    1.6  16.8   46.7   2.6393   7.4 ------	UNKNOWN                       
    211.7092 -23.0129    2.8  39.7  -26.3   2.1413   4.1 ------	UNKNOWN                       
    

    Pre-slew background subtracted image of 15-350 keV band

    Time interval of the image:
    0.000000 243.030000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5353 -40.5517    0.9  44.1 -133.5   7.7216  12.8    0.4	Vela X-1                      
    170.2377 -60.5987    1.6  15.0 -139.1   1.6732   7.2    2.7	Cen X-3                       
    186.6407 -62.7841    0.9   6.9 -142.9   3.1867  13.3    0.9	GX 301-2                      
    245.0039 -15.5994    2.5  55.6   12.4   5.8637   4.6    2.8	Sco X-1                       
    255.9968 -37.8586    5.4  40.8   38.5   0.9902   2.1    1.0	4U 1700-377                   
    256.5961 -36.4210    6.5  42.2   37.8   0.8678   1.8    7.8	GX 349+2                      
    264.4984 -44.3663   13.0  39.6   52.5   0.5551   0.9   11.6	4U 1735-44                    
    263.1301 -33.9706   12.3  47.2   42.1   0.8523   0.9   10.8	GX 354-0                      
    330.8205 -84.6203    2.1  31.5  131.1   2.0167   5.4 ------	UNKNOWN                       
     71.5512 -79.1562    2.4  35.7  153.3   2.0189   4.8 ------	UNKNOWN                       
    233.8961 -57.2098    2.0  16.8   46.7   1.6090   5.9 ------	UNKNOWN                       
    240.4673 -19.4699    2.6  50.4    9.2   2.6355   4.5 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    392.600600 663.130000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    170.0416 -60.5691   27.4  31.8 -142.5  -1.2693  -0.4    8.7	Cen X-3                       
    186.4431 -62.6636    5.6  23.8 -142.2   5.4366   2.1    8.7	GX 301-2                      
    244.9315 -15.6256    3.5  42.4   -3.3  10.5685   3.3    2.9	Sco X-1                       
    255.9875 -37.9920   11.0  24.1   27.4  -2.3522  -1.0    8.9	4U 1700-377                   
    256.3223 -36.2678    6.2  25.7   26.0   4.4045   1.8   10.8	GX 349+2                      
    263.0808 -24.8950    6.1  38.5   26.1   6.1445   1.9    9.8	GX 1+4                        
    264.7576 -44.5015    5.8  23.0   50.6   5.0478   2.0    3.2	4U 1735-44                    
    270.4256 -25.2117    4.7  41.3   35.6  10.2694   2.5   11.1	GX 5-1                        
    270.4305 -25.6800    9.7  40.8   36.0   4.8935   1.2    7.9	GRS 1758-258                  
    276.0824 -30.3480    6.5  39.6   46.4  -7.7032  -1.8    8.2	H1820-303                     
    262.8276 -33.8571   24.8  30.5   33.3  -1.2644  -0.5    8.2	GX 354-0                      
    284.7976 -35.3940    4.0  40.1   60.2  17.9278   2.9 ------	UNKNOWN                       
    106.7361 -61.7908    2.9  54.1 -171.5  27.5977   4.0 ------	UNKNOWN                       
    117.3714 -62.5742    3.2  50.6 -167.0  22.4262   3.7 ------	UNKNOWN                       
    221.8063 -12.0100    2.3  46.1  -35.7  23.1679   4.9 ------	UNKNOWN                       
    
    Plot creation:
    Sun Sep  3 17:12:45 EDT 2017