batgrbproduct analysis for trigger=1192742

batgrbproduct Analysis for Trigger=1192742

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): Wed Sep 27 12:59:01 EDT 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1192742/GCN5_download_cron
======================================================================

  Trigger: 01192742      Segment: 000

  BAT Trigger Time: 717460696   [s; MET]
      Trigger Stop: 717460760   [s; MET]
               UTC: 2023-09-26T22:37:43.919080    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 262.109690585985   Dec: -16.8847275301409  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.59
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    17.59

  Flight Position:   [ source = BAT ]
    RA: 262.109690585985   Dec: -16.8847275301409  [deg; J2000]


  Partial Coding Fraction:     [ including projection effects ]

 
  Angular difference between Flight and Ground position is 0.000000 arcmin
 
  Partial Coding Fraction:     [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     WARNING: could not be found
 Peak      WARNING: could not be found

     [ 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 -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux Power-law -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
Fluence   Cutoff-PL -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux Cutoff-PL -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   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
 
 
=== 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   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

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)

 
Foreground time interval of the image:
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

Cutoff power-law model

Multiple GTIs in the spectrum
tstart tstop

Band function

Multiple GTIs in the spectrum
tstart tstop

Single BB

Thermal bremsstrahlung (OTTB)

Double BB

Peak spectrum fit

Power-law model

Time interval is from    0.000 sec. to    0.000 sec.

Cutoff power-law model

Time interval is from    0.000 sec. to    0.000 sec.

Band function

Time interval is from    0.000 sec. to    0.000 sec.

Single BB

Thermal bremsstrahlung (OTTB)

Double BB

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)  = --------
S(50-100 keV) = --------

T90 vs. Hardness ratio plot

T90                                   = 64 sec.
Hardness ratio (energy fluence ratio) =

Color vs. Color plot

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

Mask shadow pattern

IMX = 0, IMY = 0

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:

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

Time interval of the image:

Post-slew image of 15-350 keV band

Time interval of the image:
671.000000 761.061900
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.8418 -15.4803    0.0  16.6  -89.4   0.2727   1.1   12.5	Sco X-1                       
254.5252  35.3091    7.2  52.7   -9.5  -1.1248  -1.6    3.9	Her X-1                       
256.1749 -37.7102    9.5  21.5 -168.8  -0.3053  -1.2   12.0	4U 1700-377                   
256.5989 -36.5847    0.0  20.3 -168.9   0.1094   0.4   12.5	GX 349+2                      
263.1006 -24.6228   13.2   7.8  171.7  -0.2063  -0.9    8.9	GX 1+4                        
264.8146 -44.2998    4.7  27.5  174.1  -0.6641  -2.4    9.5	4U 1735-44                    
268.5128  -1.5368  179.3  16.6   21.3  -0.0148  -0.1   10.0	SW J1753.5-0127               
270.4483 -25.0905   10.7  11.3  136.3   0.2593   1.1    8.9	GX 5-1                        
270.1398 -25.8965    0.0  11.7  140.0   0.3060   1.3   12.7	GRS 1758-258                  
273.8469 -13.8925    0.0  11.7   75.1  -0.5480  -2.2   12.7	GX 17+2                       
276.0870 -30.2219   13.9  18.5  137.1   0.2059   0.8   12.1	H1820-303                     
285.1089 -25.0523   20.0  22.9  113.0   0.2003   0.6    8.8	HT1900.1-2455                 
288.7802  10.8111    6.3  38.2   43.7  -1.0879  -1.8    8.1	GRS 1915+105                  
262.9759 -33.6845   41.1  16.8  175.8  -0.0636  -0.3    9.0	GX 354-0                      
279.8749  33.6318    2.4  53.3   16.8   5.2705   4.8 ------	UNKNOWN                       
266.9383  -5.0074    2.6  12.8   20.6   0.9955   4.5 ------	UNKNOWN                       
262.0774 -17.0002    0.5   0.1 -166.5   5.9021  23.2 ------	UNKNOWN                       
246.2107 -74.7032    4.2  58.5 -176.8   3.8296   2.8 ------	UNKNOWN                       
228.8614 -72.3303    2.5  58.7 -170.5   6.2376   4.6 ------	UNKNOWN                       
245.0693 -16.3965    0.4  16.3  -92.5   7.2658  29.2 ------	UNKNOWN                       
233.9357   5.5359    3.0  35.7  -55.3   1.3825   3.8 ------	UNKNOWN

Plot creation:
Wed Sep 27 12:59:26 EDT 2023