batgrbproduct analysis for trigger=1220092

batgrbproduct Analysis for Trigger=1220092

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 Mar 15 17:39:13 EDT 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1220092/GCN5_download_cron
======================================================================

  Trigger: 01220092      Segment: 000

  BAT Trigger Time: 732148968   [s; MET]
      Trigger Stop: 732149032   [s; MET]
               UTC: 2024-03-14T22:42:14.913000    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 243.519933585316   Dec: -15.3192966202475  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    15.09
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    15.09

  Flight Position:   [ source = BAT ]
    RA: 243.519933585316   Dec: -15.3192966202475  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 243.719663040224   Dec: -15.3862923897875  [deg; J2000]  
        { 16h 14m 52.7s , -15d 23' 10.7" }
         +/- nan [arcmin] (estimated 90% radius based on SNR)
         +/- 1.18854686606458 [arcmin] (formal 1-sigma fit error)
    SNR: -8.0730541473907
 
  Angular difference between Flight and Ground position is 12.235280 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 81.7919999361038 +/- 49.2876149685976
        Measured from: 179.648000001907
                   to: 261.439999938011     [s; relative to TRIGTIME]
     T50: 47.6159999370575 +/- 53.824313903327
        Measured from: 194.55999994278
                   to: 242.175999879837     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 237.292000055313     
                   to: 238.292000055313     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 154.751999974251     
                   to: 263.424000024796     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.305881   0.173731  -0.034329  -0.037912
           0.077437   0.069847   0.058677   0.051821 [error]
 Peak      0.028581   0.002268   0.021145   0.002465
           0.007137   0.006533   0.005524   0.005059 [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 2.87e-06 4.06e-07 2.58e-08 1.74e-09 3.31e-06 3.31e-06   erg/cm2
              Error 2.60e-07 5.90e-08 9.61e-09 1.12e-09 2.57e-07 2.57e-07   erg/cm2
Peak flux Power-law 3.73e-01 8.66e-02 1.03e-02 1.37e-03 4.71e-01 4.71e-01   ph/cm2/s
              Error 1.10e-01 5.55e-02 1.57e-02 4.24e-03 1.52e-01 1.52e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.85e-06 3.33e-07 2.45e-09 3.24e-13 3.18e-06 3.18e-06   erg/cm2
              Error 2.78e-07 8.29e-08 8.84e-09 1.83e-10 2.84e-07 2.84e-07   erg/cm2
Peak flux Cutoff-PL 3.84e-01 8.91e-02 4.57e-03 3.90e-05 4.78e-01 4.77e-01   ph/cm2/s
              Error 1.16e-01 8.00e-02 1.43e-02 3.63e-03 1.49e-01 1.50e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.70e-01 4.13e-03 1.40e-05 4.75e-08 2.74e-01 2.74e-01   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 68.11 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  108.672  154.752  263.424
T90    81.792  179.648  261.440
T50    47.616  194.560  242.176
Peak    1.000  237.292  238.292

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
  243.7197 -15.3863 0.0237    0.1   95.6      -4.8956    -8.1  TRIG_01220092       
------------------------------------------
 
Foreground time interval of the image:
-208.000 -178.000 (delta_t =  30.000 [sec])
-176.000 -171.770 (delta_t =   4.230 [sec])
-171.000 -164.780 (delta_t =   6.220 [sec])
-164.000 -46.460 (delta_t = 117.540 [sec])
-45.000 -33.700 (delta_t =  11.300 [sec])
-32.000  46.730 (delta_t =  78.730 [sec])
 48.000  71.101 (delta_t =  23.101 [sec])
Background time interval of the image:
-240.000 -208.000 (delta_t =  32.000 [sec])

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
154.752000 201.360000
202.000000 221.621200
223.000000 263.424000
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
154.752000 201.360000
202.000000 221.621200
223.000000 263.424000
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
154.752000 201.360000
202.000000 221.621200
223.000000 263.424000
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  237.292 sec. to  238.292 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  237.292 sec. to  238.292 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  237.292 sec. to  238.292 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)  = 4.06e-07
S(50-100 keV) = 2.58e-08

T90 vs. Hardness ratio plot

T90                                   = 81.7919999361038 sec.
Hardness ratio (energy fluence ratio) = 0.0635468

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.0753426
Count Ratio (50-100 keV) / (15-25 keV) = -0.0148876

Mask shadow pattern

IMX = -1.255852445518538E-04, IMY = -1.273759145512850E-03

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:
-240.000000 -171.680000
-171.000000 -164.780000
-164.000000 -46.460000
-44.999900 -33.700000
-33.000000 46.730000
48.000000 71.100600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
245.1307 -15.6830   16.0   1.3  -85.4  -0.4074  -0.7    9.1	Sco X-1                       
254.3843  35.3826    6.3  51.8 -176.9   2.8024   1.8    4.3	Her X-1                       
255.8249 -37.6979   13.4  24.7  -31.1  -0.5031  -0.9   11.7	4U 1700-377                   
256.2741 -36.2769    0.0  23.7  -33.6  -1.1109  -2.0   11.7	GX 349+2                      
263.1795 -24.6032    0.0  20.4  -68.0   0.8021   1.3   12.6	GX 1+4                        
264.9291 -44.4644   19.5  34.1  -35.2  -0.4396  -0.6    8.0	4U 1735-44                    
268.2327  -1.5746    8.8  27.8 -125.4  -0.8909  -1.3   10.9	SW J1753.5-0127               
270.3763 -25.2099    5.1  26.7  -72.1  -1.5556  -2.2    9.3	GX 5-1                        
270.4311 -25.8713    4.0  27.0  -70.7   1.9538   2.9   10.4	GRS 1758-258                  
274.1144 -13.9071   19.7  29.3  -96.8   0.4745   0.6   10.0	GX 17+2                       
275.8130 -30.3041    8.2  32.9  -65.3  -1.2163  -1.4    6.9	H1820-303                     
285.1530 -24.8521    3.2  39.8  -77.4  -6.0633  -3.6    7.6	HT1900.1-2455                 
262.8077 -33.9856    0.0  25.3  -47.1  -0.5081  -0.8   12.8	GX 354-0                      
210.2718  -3.9047    2.5  34.9   97.9   4.3113   4.6 ------	UNKNOWN                       
225.6567  19.7717    2.6  39.4  144.7   5.5221   4.4 ------	UNKNOWN                       
243.5682 -15.3520    0.6   0.2   95.4   9.8005  18.1 ------	UNKNOWN                       
280.5632 -68.4841    2.6  58.0  -22.9  11.9530   4.4 ------	UNKNOWN                       
279.7573  20.3947    2.9  50.3 -142.2   6.8712   4.1 ------	UNKNOWN

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

Time interval of the image:
-208.000000 -178.000000
-176.000000 -171.770000
-171.000000 -164.780000
-164.000000 -46.460000
-44.999900 -33.700000
-32.000000 46.730000
48.000000 71.100600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.8139 -15.7010   32.3   1.0  -80.9   0.2279   0.4   10.2	Sco X-1                       
254.3576  35.2056   42.9  51.6 -176.8  -0.4363  -0.3    9.6	Her X-1                       
255.9846 -37.6978    9.0  24.8  -31.4   0.8752   1.3    8.8	4U 1700-377                   
256.2741 -36.2769    0.0  23.7  -33.6   0.2889   0.4   11.7	GX 349+2                      
263.0085 -24.7664  696.3  20.3  -67.3  -0.0120  -0.0    1.2	GX 1+4                        
264.7441 -44.4502   95.8  34.0  -35.0  -0.1094  -0.1    0.1	4U 1735-44                    
268.4987  -1.3302    4.9  28.1 -125.5   1.9139   2.3   10.7	SW J1753.5-0127               
270.4485 -25.0332    6.0  26.7  -72.5  -1.7230  -1.9    9.3	GX 5-1                        
270.1375 -25.7870    6.9  26.7  -70.7  -1.4591  -1.7    9.3	GRS 1758-258                  
274.1584 -13.9125    8.2  29.4  -96.8  -1.3748  -1.4   11.6	GX 17+2                       
275.8197 -30.5136    4.3  33.0  -65.0  -2.8250  -2.7   10.3	H1820-303                     
284.9925 -24.8381    5.9  39.7  -77.3  -4.5349  -1.9    5.5	HT1900.1-2455                 
263.1665 -33.7538    8.8  25.3  -48.0  -1.0299  -1.3   10.1	GX 354-0

Post-slew image of 15-350 keV band

Time interval of the image:
78.300630 88.670000
90.000000 126.460000
129.000000 201.360000
202.000000 221.621200
223.000000 336.450000
361.000000 363.105700
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
245.1496 -15.5448    7.1   1.6  -89.9  -0.7895  -1.6   11.4	Sco X-1                       
254.5175  35.4211    4.3  51.8 -176.5  -3.3315  -2.7    5.6	Her X-1                       
255.9864 -37.8440   28.7  25.1  -31.7   0.2032   0.4    0.0	4U 1700-377                   
256.4371 -36.4238  213.4  24.0  -34.2   0.0273   0.1    0.1	GX 349+2                      
263.0435 -24.8611    7.2  20.6  -67.3  -0.8407  -1.6    7.2	GX 1+4                        
264.7119 -44.4083    4.6  34.2  -35.3  -1.6164  -2.5    2.8	4U 1735-44                    
268.5126  -1.4454    7.0  28.3 -124.9   0.9754   1.6    8.7	SW J1753.5-0127               
270.2584 -24.9450    5.5  26.8  -72.6   1.3006   2.1    8.2	GX 5-1                        
270.4666 -25.8686    0.0  27.3  -70.8  -1.3278  -2.1   11.6	GRS 1758-258                  
273.9249 -13.9041    8.5  29.4  -96.7   0.9542   1.4    9.2	GX 17+2                       
276.0115 -30.2743    3.8  33.3  -65.6  -2.3876  -3.0    7.1	H1820-303                     
284.8659 -24.8436    3.4  39.8  -77.3  -5.0831  -3.4   10.3	HT1900.1-2455                 
262.9904 -33.8340  543.8  25.5  -47.9   0.0118   0.0    0.1	GX 354-0                      
204.4970  -1.4565    2.3  40.9   98.1   6.1938   5.2 ------	UNKNOWN                       
223.6495 -65.5482    2.9  52.0    2.4   3.5950   4.1 ------	UNKNOWN                       
243.3588 -15.3137    0.6   0.1   88.0   8.5523  18.5 ------	UNKNOWN

Plot creation:
Fri Mar 15 17:40:23 EDT 2024