batgrbproduct analysis for trigger=1205110

batgrbproduct Analysis for Trigger=1205110

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): Fri Dec 29 10:08:16 EST 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1205110/GCN5_download_cron
======================================================================

  Trigger: 01205110      Segment: 000

  BAT Trigger Time: 725446584   [s; MET]
      Trigger Stop: 725446712   [s; MET]
               UTC: 2023-12-28T08:55:51.372240    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 300.346960427101   Dec: 35.1372977081995  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    15.04
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    15.04

  Flight Position:   [ source = BAT ]
    RA: 300.346960427101   Dec: 35.1372977081995  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 300.367813091346   Dec: 35.1426885545746  [deg; J2000]  
        { 20h 01m 28.3s , +35d 08' 33.7" }
         +/- 1.60828145551291 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.716669259711764 [arcmin] (formal 1-sigma fit error)
    SNR: 15.428206578485
 
  Angular difference between Flight and Ground position is 1.073044 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 211.019999980927 +/- 58.4313628230888
        Measured from: 375.500000119209
                   to: 586.520000100136     [s; relative to TRIGTIME]
     T50: 108.703999996185 +/- 54.3207347372698
        Measured from: 434.300000071526
                   to: 543.004000067711     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 587.679999947548     
                   to: 588.679999947548     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 352.027999997139     
                   to: 588.907999992371     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.501527   1.362372   0.559004  -0.103472
           0.097349   0.098906   0.083544   0.070505 [error]
 Peak     -0.006278   0.040357   0.006916   0.015476
           0.011956   0.011215   0.009802   0.008221 [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 4.04e-07 4.50e-07 3.57e-07 4.70e-07 1.39e-06 1.68e-06   erg/cm2
              Error 4.04e-08 3.36e-08 5.23e-08 1.33e-07 1.18e-07 1.97e-07   erg/cm2
Peak flux Power-law 1.04e-01 6.41e-02 2.55e-02 1.36e-02 2.00e-01 2.07e-01   ph/cm2/s
              Error 1.06e-02 4.70e-03 3.59e-03 3.60e-03 1.45e-02 1.48e-02   ph/cm2/s
 
Fluence   Cutoff-PL 3.85e-07 4.78e-07 3.39e-07 1.73e-07 1.31e-06 1.37e-06   erg/cm2
              Error 4.56e-08 4.40e-08 6.04e-08 1.37e-07 1.34e-07 2.53e-07   erg/cm2
Peak flux Cutoff-PL 9.79e-02 6.79e-02 2.46e-02 6.06e-03 1.95e-01 1.97e-01   ph/cm2/s
              Error 1.21e-02 6.08e-03 4.06e-03 5.61e-03 1.54e-02 1.66e-02   ph/cm2/s
 
Fluence        Band 3.82e-07 4.75e-07 3.42e-07 1.86e-07 1.32e-06 1.39e-06   erg/cm2
              Error 4.49e-08 -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 9.82e-02 6.77e-02 2.48e-02 6.45e-03 1.95e-01 1.97e-01   ph/cm2/s
              Error 1.21e-02 -------- -------- -------- -------- 1.66e-02   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 91.74 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  236.880  352.028  588.908
T90   211.020  375.500  586.520
T50   108.704  434.300  543.004
Peak    1.000  587.680  588.680

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
  300.3678 +35.1427 0.0125    0.2  -95.2       3.0679    15.4  TRIG_01205110       
------------------------------------------
 
Foreground time interval of the image:
  0.000 128.000 (delta_t = 128.000 [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

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:

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
352.028000 391.300000
392.000000 432.000000
434.000000 462.420000
464.000000 588.908000
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
352.028000 391.300000
392.000000 432.000000
434.000000 462.420000
464.000000 588.908000
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
352.028000 391.300000
392.000000 432.000000
434.000000 462.420000
464.000000 588.908000
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  587.680 sec. to  588.680 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  587.680 sec. to  588.680 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  587.680 sec. to  588.680 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)  = 4.50e-07
S(50-100 keV) = 3.57e-07

T90 vs. Hardness ratio plot

T90                                   = 211.019999980927 sec.
Hardness ratio (energy fluence ratio) = 0.793333

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.907324
Count Ratio (50-100 keV) / (15-25 keV) = 0.37229

Mask shadow pattern

IMX = -3.315584289980598E-04, IMY = 3.626473530940569E-03

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:
-239.000000 -56.680000
-56.000000 135.800600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3865  35.4622   14.6  37.2  -10.2   0.5900   0.8    8.0	Her X-1                       
288.8730  11.0503   49.7  26.5  -88.0   0.1520   0.2    7.7	GRS 1915+105                  
299.8104  35.2576   29.2   0.5  -32.9   0.2111   0.4   11.3	Cyg X-1                       
308.0039  41.1153   18.0   8.3  109.3  -0.3477  -0.6   10.9	Cyg X-3                       
325.9412  38.3271    5.2  20.6  139.9   1.2710   2.2   10.9	Cyg X-2                       
332.0283  22.4858    2.4  30.3  172.3   2.8230   4.8 ------	UNKNOWN                       
300.4046  35.1517    0.7   0.2 -102.9   8.8198  17.3 ------	UNKNOWN                       
243.4640  40.1199    2.2  44.6   -0.3   4.9549   5.1 ------	UNKNOWN                       
329.7939   9.1726    2.0  37.4 -167.0   3.7973   5.7 ------	UNKNOWN

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

Time interval of the image:
0.000000 128.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.5042  35.2223   12.0  37.2  -10.6  -0.2695  -1.0    7.6	Her X-1                       
288.6195  10.8491    0.0  26.7  -87.6  -0.1469  -0.6   12.0	GRS 1915+105                  
299.7745  35.1714   11.4   0.6  -41.0   0.2059   1.0    9.2	Cyg X-1                       
308.1042  40.9519   92.0   8.2  110.5  -0.0257  -0.1    0.3	Cyg X-3                       
326.0207  38.2712    5.6  20.6  140.0   0.4680   2.0    7.7	Cyg X-2                       
316.0393  66.2294    2.6  32.2   77.5   1.8325   4.5 ------	UNKNOWN                       
332.0388  22.4828    2.7  30.3  172.3   1.0097   4.3 ------	UNKNOWN                       
300.3968  35.1364    0.8   0.2 -102.0   3.0836  15.5 ------	UNKNOWN                       
267.5971  41.1294    3.0  26.3   -1.6   0.8279   3.9 ------	UNKNOWN                       
329.1174   9.0248    2.1  37.1 -166.0   1.3815   5.5 ------	UNKNOWN                       
277.9164  18.8075    2.0  25.9  -58.0   1.2366   5.7 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
141.200640 391.300000
392.000000 432.000000
434.000000 462.420000
464.000000 510.800600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4258  35.4627    8.2  37.1   -9.9   1.0223   1.4    7.4	Her X-1                       
288.6497  10.9352   12.7  26.4  -87.6  -0.5626  -0.9    8.8	GRS 1915+105                  
299.5881  35.3662    7.3   0.6   -3.4  -0.8065  -1.6    9.9	Cyg X-1                       
308.1047  40.9495 2490.2   8.4  110.0  -0.0020  -0.0    0.3	Cyg X-3                       
326.0055  38.2488  756.1  20.8  139.7  -0.0083  -0.0    9.0	Cyg X-2                       
315.4745  66.0648    3.1  32.2   77.4   3.7793   3.6 ------	UNKNOWN                       
243.5265  47.6188    3.3  43.4   10.7   3.1855   3.5 ------	UNKNOWN                       
240.8868  43.1402    2.1  45.8    4.7   4.8756   5.5 ------	UNKNOWN                       
329.6726   9.0646    1.8  37.4 -167.0   4.1684   6.5 ------	UNKNOWN                       
313.4124   3.5761    2.5  33.8 -138.1   3.0070   4.7 ------	UNKNOWN                       
268.3417   2.9532    3.0  43.8  -64.2   8.0831   3.9 ------	UNKNOWN                       
311.6189 -11.6815    2.3  48.0 -129.1  11.8133   5.1 ------	UNKNOWN

Plot creation:
Fri Dec 29 10:11:15 EST 2023