batgrbproduct analysis for trigger=1212132

batgrbproduct Analysis for Trigger=1212132

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 Feb  1 03:02:12 EST 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1212132/GCN5_download_cron
======================================================================

  Trigger: 01212132      Segment: 000

  BAT Trigger Time: 728372632   [s; MET]
      Trigger Stop: 728372696   [s; MET]
               UTC: 2024-01-31T05:43:19.171600    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 245.112473034327   Dec: -15.8160286699321  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.66
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    9.66

  Flight Position:   [ source = BAT ]
    RA: 245.112473034327   Dec: -15.8160286699321  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 245.048130938411   Dec: -15.7601717677811  [deg; J2000]  
        { 16h 20m 11.6s , -15d 45' 36.6" }
         +/- 1.7364177555688 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.642633931401667 [arcmin] (formal 1-sigma fit error)
    SNR: 13.8278675618429
 
  Angular difference between Flight and Ground position is 5.003234 arcmin
 
  Partial Coding Fraction: 0.78125    [ including projection effects ]

  Duration
     T90: 62.9199998378754 +/- 10.2448690954466
        Measured from: 79.6160001754761
                   to: 142.536000013351     [s; relative to TRIGTIME]
     T50: 31.9559999704361 +/- 11.2159702170268
        Measured from: 97.9080001115799
                   to: 129.864000082016     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 126.511999964714     
                   to: 127.511999964714     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 77.0319999456406     
                   to: 145.608000040054     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.196097   0.284121  -0.037043   0.049561
           0.063778   0.056311   0.045615   0.038442 [error]
 Peak      0.042832   0.015733   0.010496   0.002962
           0.007402   0.006587   0.005495   0.004563 [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 4.45e-07 7.36e-08 5.70e-09 4.74e-10 5.25e-07 5.25e-07   erg/cm2
              Error 5.25e-08 2.11e-08 3.82e-09 6.42e-10 6.11e-08 6.11e-08   erg/cm2
Peak flux Power-law 3.03e-01 2.92e-02 1.13e-03 4.55e-05 3.34e-01 3.34e-01   ph/cm2/s
              Error 3.65e-02 7.97e-03 7.38e-04 5.99e-05 3.83e-02 3.83e-02   ph/cm2/s
 
Fluence   Cutoff-PL 4.63e-07 4.67e-08 6.40e-11 5.25e-17 5.10e-07 5.10e-07   erg/cm2
              Error 5.67e-08 2.66e-08 1.27e-09 1.03e-11 5.91e-08 5.90e-08   erg/cm2
Peak flux Cutoff-PL 3.12e-01 1.98e-02 1.45e-05 6.15e-12 3.32e-01 3.32e-01   ph/cm2/s
              Error 3.95e-02 1.04e-02 2.65e-04 1.12e-06 3.92e-02 3.92e-02   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   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 65.06 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   68.576   77.032  145.608
T90    62.920   79.616  142.536
T50    31.956   97.908  129.864
Peak    1.000  126.512  127.512

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
  245.0481 -15.7602 0.0139   17.9   55.6       1.8499    13.8  TRIG_01212132       
------------------------------------------
 
Foreground time interval of the image:
  0.000  15.390 (delta_t =  15.390 [sec])
 16.000  52.150 (delta_t =  36.150 [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

Time interval is from   77.032 sec. to  145.608 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   77.032 sec. to  145.608 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   77.032 sec. to  145.608 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  126.512 sec. to  127.512 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  126.512 sec. to  127.512 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  126.512 sec. to  127.512 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)  = 7.36e-08
S(50-100 keV) = 5.70e-09

T90 vs. Hardness ratio plot

T90                                   = 62.9199998378754 sec.
Hardness ratio (energy fluence ratio) = 0.0774457

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.129375
Count Ratio (50-100 keV) / (15-25 keV) = -0.0168677

Mask shadow pattern

IMX = 1.818553940636338E-01, IMY = -2.659371451096094E-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:
-14.499400 15.390000
16.000000 52.150000
53.000000 73.200590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
245.0550 -15.7543    0.8  17.9   55.7   3.0572  15.1    8.1	Sco X-1                       
254.7071  35.4400    0.0  49.2  147.2   0.8063   1.2   13.5	Her X-1                       
256.0538 -37.8890    7.9  25.6  -10.3  -0.2821  -1.5    4.2	4U 1700-377                   
256.4568 -36.3563    4.0  24.1  -10.0   0.5443   2.9    4.1	GX 349+2                      
262.9771 -24.8274    5.3  11.7  -22.2   0.3751   2.2    5.2	GX 1+4                        
264.7739 -44.6128    8.7  31.6  -25.6  -0.2575  -1.3    9.9	4U 1735-44                    
268.2291  -1.4053    5.6  12.7  179.6   0.3557   2.0    8.8	SW J1753.5-0127               
270.1918 -24.8906  120.3  13.5  -51.4   0.0164   0.1   12.4	GX 5-1                        
270.4370 -25.8386    3.7  14.4  -50.3   0.5398   3.2    9.3	GRS 1758-258                  
274.0959 -14.2288    0.0  10.6 -106.1   0.2661   1.6   12.7	GX 17+2                       
275.8947 -30.2673   12.0  20.8  -55.7   0.1808   1.0    6.2	H1820-303                     
284.8498 -24.9600    3.3  23.5  -80.1  -0.6957  -3.5   10.4	HT1900.1-2455                 
288.7068  11.0153    6.1  34.9 -156.1   0.4065   1.9    6.8	GRS 1915+105                  
263.1680 -33.8518    5.2  20.8  -23.3   0.3885   2.2    9.0	GX 354-0                      
264.5984  19.0573    2.7  32.2  158.8   1.0273   4.3 ------	UNKNOWN                       
296.8850 -53.2882    2.4  48.2  -49.9   3.8293   4.9 ------	UNKNOWN

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

Time interval of the image:
0.000000 15.390000
16.000000 52.150000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
245.0482 -15.7602    0.8  17.9   55.6   1.8499  13.8    8.2	Sco X-1                       
254.6296  35.3445    5.9  49.1  147.1   0.8879   2.0    8.4	Her X-1                       
255.9764 -37.9116   11.1  25.7  -10.1  -0.1381  -1.0    4.1	4U 1700-377                   
256.4233 -36.3531    3.1  24.1   -9.9   0.4767   3.8    4.2	GX 349+2                      
262.9227 -24.7537    6.6  11.7  -21.9   0.2075   1.7    4.7	GX 1+4                        
264.7945 -44.6156    6.5  31.6  -25.6  -0.2407  -1.8   10.2	4U 1735-44                    
268.2224  -1.4211    6.4  12.6  179.6   0.2080   1.8    8.9	SW J1753.5-0127               
270.2487 -25.0021    7.8  13.6  -51.4  -0.1684  -1.5    5.0	GX 5-1                        
270.4405 -25.8306    3.7  14.4  -50.3   0.3628   3.2    9.1	GRS 1758-258                  
274.0959 -14.2288    0.0  10.6 -106.1   0.1784   1.5   12.7	GX 17+2                       
275.8413 -30.2233    8.8  20.7  -55.6   0.1635   1.3    9.7	H1820-303                     
285.1626 -24.9550    5.5  23.8  -80.4   0.2994   2.1    7.2	HT1900.1-2455                 
288.7162  10.9146   11.5  34.8 -155.9   0.1438   1.0    5.2	GRS 1915+105                  
263.0711 -34.0231   10.3  20.9  -23.0   0.1223   1.1   12.0	GX 354-0                      
229.6481 -36.8791    2.4  38.3   22.1   0.9582   4.8 ------	UNKNOWN                       
264.5623  19.0938    2.8  32.2  158.7   0.6640   4.2 ------	UNKNOWN                       
275.0149  19.6997    2.4  34.8  176.1   0.7084   4.7 ------	UNKNOWN                       
287.7809   8.7302    2.1  32.7 -154.1   0.7283   5.5 ------	UNKNOWN                       
301.1787  17.6822    2.0  48.4 -152.1   1.4563   5.8 ------	UNKNOWN                       
309.0811  21.6745    3.1  56.8 -150.8   2.3073   3.7 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
133.500600 243.067300
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9628 -15.6408    0.6   0.1  130.1   4.2892  20.3    1.0	Sco X-1                       
254.4573  35.3426  864.7  51.8  177.8  -0.0078  -0.0    0.0	Her X-1                       
256.1693 -37.8359    8.0  24.2  -33.9   0.3126   1.4    8.7	4U 1700-377                   
256.4268 -36.3720    5.6  23.0  -36.1   0.4430   2.1    3.1	GX 349+2                      
263.1516 -24.6985    3.9  19.2  -71.3  -0.6895  -2.9    8.3	GX 1+4                        
264.8452 -44.5743    5.4  33.4  -38.1   0.5594   2.1    8.6	4U 1735-44                    
268.5197  -1.3635    7.1  27.3 -131.5   0.3769   1.6   10.6	SW J1753.5-0127               
270.2499 -25.1709    3.8  25.4  -76.1   0.7393   3.1    5.8	GX 5-1                        
270.3951 -25.7511    3.8  25.7  -74.9   0.7663   3.2    5.0	GRS 1758-258                  
273.9047 -13.9694    3.6  28.0 -101.8   0.8974   3.2    7.1	GX 17+2                       
275.7467 -30.5078    0.0  31.7  -68.8   1.2748   3.9   12.5	H1820-303                     
285.0739 -24.9478 1601.6  38.5  -81.5  -0.0038  -0.0    2.6	HT1900.1-2455                 
262.9857 -33.7943    3.0  24.3  -50.6   0.8671   3.8    2.4	GX 354-0                      
273.2084  33.7933    2.1  56.3 -163.9   3.7417   5.6 ------	UNKNOWN

Plot creation:
Thu Feb  1 03:03:27 EST 2024