batgrbproduct analysis for trigger=1069242

batgrbproduct Analysis for Trigger=1069242

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
4) This page will be updated for up to 15 downlinks after the trigger.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Thu Aug 19 15:52:34 EDT 2021
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1069242/GCN5_download_cron
======================================================================

  Trigger: 01069242      Segment: 000

  BAT Trigger Time: 650996248   [s; MET]
      Trigger Stop: 650996312   [s; MET]
               UTC: 2021-08-18T16:17:00.428980    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 299.818776326101   Dec: 35.2770795652221  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.49
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    12.49

  Flight Position:   [ source = BAT ]
    RA: 299.818776326101   Dec: 35.2770795652221  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 299.778136414175   Dec: 35.2698552379913  [deg; J2000]  
        { 19h 59m 06.8s , +35d 16' 11.5" }
         +/- 1.63180315791741 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.700815231910457 [arcmin] (formal 1-sigma fit error)
    SNR: 15.1114897550909
 
  Angular difference between Flight and Ground position is 2.037362 arcmin
 
  Partial Coding Fraction: 0.828125    [ including projection effects ]

  Duration
     T90: 395.647999882698 +/- 191.997385172258
        Measured from: 315.904000163078
                   to: 711.552000045776     [s; relative to TRIGTIME]
     T50: 221.927999973297 +/- 49.7244858909304
        Measured from: 412.340000152588
                   to: 634.268000125885     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 606.552000045776     
                   to: 607.552000045776     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 143.259999990463     
                   to: 795.544000029564     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.997515   3.947053   1.813850   0.381608
           0.155891   0.158598   0.138301   0.129502 [error]
 Peak      0.013451   0.011632   0.017942   0.014627
           0.006526   0.006556   0.005733   0.005413 [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 2.45e-07 2.87e-07 2.43e-07 3.49e-07 9.00e-07 1.12e-06   erg/cm2
              Error 3.08e-08 2.83e-08 4.62e-08 1.28e-07 1.05e-07 1.85e-07   erg/cm2
Peak flux Power-law 1.27e-01 8.30e-02 3.51e-02 2.03e-02 2.56e-01 2.66e-01   ph/cm2/s
              Error 1.64e-02 7.99e-03 6.45e-03 6.94e-03 2.38e-02 2.49e-02   ph/cm2/s
 
Fluence   Cutoff-PL 2.37e-07 3.07e-07 2.22e-07 1.06e-07 8.35e-07 8.73e-07   erg/cm2
              Error 3.32e-08 3.94e-08 6.21e-08 1.75e-07 1.30e-07 2.61e-07   erg/cm2
Peak flux Cutoff-PL 1.22e-01 8.86e-02 3.27e-02 7.69e-03 2.49e-01 2.51e-01   ph/cm2/s
              Error 1.79e-02 1.12e-02 8.33e-03 1.27e-02 2.52e-02 2.84e-02   ph/cm2/s
 
Fluence        Band 2.31e-07 3.13e-07 2.13e-07 2.17e-07 8.48e-07 9.82e-07   erg/cm2
              Error 3.42e-08 -------- -------- -------- -------- --------   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 93.26 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  652.284  143.260  795.544
T90   395.648  315.904  711.552
T50   221.928  412.340  634.268
Peak    1.000  606.552  607.552

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
  299.7781 +35.2699 0.0127   25.0  163.7       2.0240    15.1  TRIG_01069242       
------------------------------------------
 
Foreground time interval of the image:
  0.000  28.950 (delta_t =  28.950 [sec])
 30.000  64.000 (delta_t =  34.000 [sec])
Background time interval of the image:

Lightcurves

Notes:

1) All plots contain as much data as has been downloaded to date.
2) The mask-weighted light curves are using the flight position.
3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
4) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
5) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
6) Time of each bin is in the middle of the bin.

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

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

8 ms binning

From T100_start-3 s to T100_start+3 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

2 ms binning

From T100_start-1 s to T100_start+1 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Spectra

Notes:

1) The fitting includes the systematic errors.
2) For long bursts, a spectral fit of the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.

Time averaged spectrum fit using the pre-slew DRM

Power-law model

Multiple GTIs in the spectrum
tstart tstop
143.260000 654.197400
661.000000 714.550000
781.000000 795.544000
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

Multiple GTIs in the spectrum
tstart tstop
143.260000 654.197400
661.000000 714.550000
781.000000 795.544000
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

Multiple GTIs in the spectrum
tstart tstop
143.260000 654.197400
661.000000 714.550000
781.000000 795.544000
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  606.552 sec. to  607.552 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  606.552 sec. to  607.552 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  606.552 sec. to  607.552 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) = 2.43e-07

T90 vs. Hardness ratio plot

T90                                   = 395.647999882698 sec.
Hardness ratio (energy fluence ratio) = 0.84669

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.987377
Count Ratio (50-100 keV) / (15-25 keV) = 0.453744

Mask shadow pattern

IMX = -4.467291355961386E-01, IMY = -1.302392414578394E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

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:
-239.000000 -56.213200
-55.000000 28.950000
30.000000 73.100590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4614  35.3450 2700.0  57.8 -169.7   0.0038   0.0    0.2	Her X-1                       
288.7026  11.0700    9.2  48.0  141.7   1.6710   1.3    9.4	GRS 1915+105                  
299.7492  35.2630    0.5  25.0  163.8   9.5769  23.5    8.6	Cyg X-1                       
307.9207  40.8716    6.7  17.1  172.7   0.5622   1.7    9.9	Cyg X-3                       
326.1694  38.1708    8.9   5.3  121.5   0.4140   1.3    9.1	Cyg X-2                       
301.5082  17.0750    2.6  35.4  133.3   2.5983   4.4 ------	UNKNOWN                       
308.2509  37.6758    0.6  17.8  162.2   6.2188  18.6 ------	UNKNOWN                       
 17.2567  42.9871    2.9  33.8  -27.8   1.6411   3.9 ------	UNKNOWN

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

Time interval of the image:
0.000000 28.950000
30.000000 64.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4565  35.2112   17.4  57.9 -169.9   0.3722   0.7    7.9	Her X-1                       
288.6894  10.8539    9.3  48.2  141.5  -0.6617  -1.2    8.5	GRS 1915+105                  
299.7607  35.2668    0.8  25.0  163.8   2.0091  15.0    9.2	Cyg X-1                       
308.0750  40.8065   13.9  17.0  172.4  -0.0896  -0.8    8.9	Cyg X-3                       
326.0041  38.4741    5.4   5.2  124.7   0.2178   2.1   12.1	Cyg X-2                       
328.9613   3.1762    1.8  39.1   82.4   2.5195   6.3 ------	UNKNOWN                       
308.2733  37.6748    1.1  17.7  162.2   1.1296  10.7 ------	UNKNOWN                       
301.8774  51.0012    2.9  21.5 -156.4   0.4565   4.0 ------	UNKNOWN                       
 20.8152  40.3542    2.5  37.1  -24.8   0.6917   4.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
128.100600 466.900640
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3365  35.2474    4.6  36.7 -131.7   1.5325   2.5    8.2	Her X-1                       
268.5097  -1.4701    7.0  46.8  169.8  -1.5339  -1.6    8.6	SW J1753.5-0127               
288.7808  10.7610    6.6  26.4  149.3   0.7983   1.7   11.1	GRS 1915+105                  
299.6278  35.2001    0.4   0.0 -174.1  11.0605  32.0    1.8	Cyg X-1                       
308.0170  40.9937    5.0   8.8   -9.1   0.8400   2.3    4.9	Cyg X-3                       
326.2971  38.5065    0.0  21.5   18.0  -0.3440  -1.0   12.6	Cyg X-2                       
319.8021   0.5023    2.1  39.5   91.9   6.2379   5.5 ------	UNKNOWN                       
308.5190  11.4630    2.7  25.1  103.8   1.9229   4.2 ------	UNKNOWN                       
271.6673   8.2624    2.5  37.2  174.9   2.3811   4.6 ------	UNKNOWN                       
308.0779  37.6390    0.8   7.2   12.5   4.8826  14.0 ------	UNKNOWN                       
252.8874  19.2641    3.1  44.1 -153.9   2.5671   3.7 ------	UNKNOWN                       
240.8720  11.4322    3.3  58.0 -154.2   7.0085   3.5 ------	UNKNOWN

Plot creation:
Thu Aug 19 15:55:47 EDT 2021