batgrbproduct analysis for trigger=1111672

batgrbproduct Analysis for Trigger=1111672

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done using the HEASARC data.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Mon Oct 24 11:46:01 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1111672
======================================================================

  Trigger: 01111672      Segment: 000

  BAT Trigger Time: 677660683.776   [s; MET]
      Trigger Stop: 677660684.8   [s; MET]
               UTC: 2022-06-23T07:04:14.406620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 145.462239057548   Dec: 75.8284740409551  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    18.9
     Image Trigger?:     NO
     Rate S/N Ratio:     84.4985206971104  [ if not an image trigger ]
     Image S/N Ratio:    18.9

  Flight Position:   [ source = BAT ]
    RA: 145.462239057548   Dec: 75.8284740409551  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 145.468106578395   Dec: 75.82314777064  [deg; J2000]  
        { 09h 41m 52.3s , +75d 49' 23.3" }
         +/- 0.844273294080949 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.231031888495376 [arcmin] (formal 1-sigma fit error)
    SNR: 38.7384813716631
 
  Angular difference between Flight and Ground position is 0.330999 arcmin
 
  Partial Coding Fraction: 0.9453125    [ including projection effects ]

  Duration
     T90: 56.7959998846054 +/- 4.03039509147759
        Measured from: -3.26800000667572
                   to: 53.5279998779297     [s; relative to TRIGTIME]
     T50: 23.675999879837 +/- 4.52679852854081
        Measured from: 1.2960000038147
                   to: 24.9719998836517     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.148000001907349     
                   to: 0.851999998092651     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -3.84399998188019     
                   to: 73.7919999361038     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.485779   1.976161   1.667865   0.483371
           0.058966   0.061473   0.055190   0.046972 [error]
 Peak      0.130012   0.204529   0.201120   0.090111
           0.008759   0.010652   0.010804   0.009081 [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 3.95e-07 8.00e-07 1.26e-06 4.41e-06 3.51e-06 6.86e-06   erg/cm2
              Error 2.83e-08 3.24e-08 5.52e-08 4.54e-07 1.35e-07 4.83e-07   erg/cm2
Peak flux Power-law 1.04e+00 1.37e+00 1.33e+00 2.29e+00 4.50e+00 6.03e+00   ph/cm2/s
              Error 1.17e-01 8.95e-02 8.64e-02 3.37e-01 2.47e-01 3.89e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.94e-07 7.92e-07 1.25e-06 4.51e-06 3.53e-06 6.84e-06   erg/cm2
              Error -------- -------- -------- 5.52e-07 -------- 6.14e-07   erg/cm2
Peak flux Cutoff-PL 1.04e+00 1.37e+00 1.33e+00 2.52e+00 4.50e+00 6.05e+00   ph/cm2/s
              Error 1.17e-01 8.95e-02 8.65e-02 -------- 2.46e-01 4.08e-01   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    1.342    0.068    -      -           4.62e-03 1.61e-04   54.780 57
CPL   1.342    0.069    9999.4    0.0      4.63e-03 5.19e-04   54.830 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.047    0.104    -      -           3.89e-02 2.12e-03   90.080 57
CPL   1.043    0.105    9999.0    0.0      3.92e-02 4.76e-03   90.190 56
 
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: 54.656000 sec.
T50 in the 50-300 keV band: 10.432000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   77.636   -3.844   73.792
T90    56.796   -3.268   53.528
T50    23.676    1.296   24.972
Peak    1.000   -0.148    0.852

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  145.4681    75.8231   0.0050    11.9844    41.0101         5.5486797     38.738 TRIG_01111672                 
 
Foreground time interval of the image:
 -3.844  73.792 (delta_t =  77.636 [sec])
Background time interval of the image:
-293.776  -3.844 (delta_t = 289.932 [sec])

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) 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.
4) 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.
5) 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 1.024000

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 1.024000

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 1.024000

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

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

Quad-rate summed light curves (from T0-300s to T0+1000s)

Spectral Evolution

Spectra

Notes:

1) The fitting includes the systematic errors.
2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using 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.

Time averaged spectrum fit using the average DRM

Power-law model

Time interval is from   -3.844 sec. to   73.792 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34235     ( -0.0682466   0.0681622 )
Norm@50keV  : 4.61898E-03    ( -0.000160989   0.000160979 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.78     using 59 bins.
 Reduced chi-squared = 0.961053
# Null hypothesis probability of 5.59e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 77.64 sec: 0.555593 ( -0.020577  0.020645 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.50902e-06 ( -1.3517e-07  1.3563e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -3.844 sec. to   73.792 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34232     ( -0.0713049   0.0663264 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 4.62836E-03    ( -0.000161484   0.000876617 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.83     using 59 bins.
 Reduced chi-squared = 0.979107
# Null hypothesis probability of 5.19e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 77.64 sec: 0.559488 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.5309e-06 ( 0  0 ) ergs/cm2

Band function

Time interval is from   -3.844 sec. to   73.792 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 18.0201  (  )
R^2/D10^2   : 3.34026E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  250.54     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.31e-26 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.685e-07   1.242e-08
25- 50  7.801e-07   4.045e-08
50-150  1.839e-06   1.297e-07
15-150  2.788e-06   1.234e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-6.95355      -200)
Norm        : 2.30967       (-0.0811327     0.0811327)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   91.15     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.73e-03 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.466e-07   1.716e-08
25- 50  8.592e-07   3.455e-08
50-150  1.884e-06   7.337e-08
15-150  3.190e-06   1.211e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.20646        (-0.911274      1.01538)
R1^2/D10^2  : 0.489765        (-0.176691      0.306135)
kT2 [keV]   : 31.4870        (-3.79281      5.44074)
R2^2/D10^2  : 4.49063E-03    (-0.00178661   0.00239632)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.95     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.67e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.791e-07   4.953e-08
25- 50  8.029e-07   5.819e-08
50-150  2.351e-06   2.450e-07
15-150  3.533e-06   3.416e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.148 sec. to    0.852 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.04678     ( -0.104253   0.103454 )
Norm@50keV  : 3.89449E-02    ( -0.00211571   0.00211571 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   90.08     using 59 bins.
 Reduced chi-squared = 1.58035
# Null hypothesis probability of 3.42e-03 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 4.49692 ( -0.24657  0.24672 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.1441e-07 ( -2.66973e-08  2.6886e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.148 sec. to    0.852 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.04257     ( -0.105644   0.103477 )
Epeak [keV] : 9999.01      ( -9999.09 -9999.09 )
Norm@50keV  : 3.91646E-02    ( -0.00212788   0.00738342 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   90.19     using 59 bins.
 Reduced chi-squared = 1.61054
# Null hypothesis probability of 2.56e-03 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 4.49570 ( -0.24479  0.24663 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.14171e-07 ( -2.67082e-08  2.68812e-08 ) ergs/cm2

Band function

Time interval is from   -0.148 sec. to    0.852 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 20.6341  (  )
R^2/D10^2   : 0.187188  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  192.91     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.16e-16 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.517e-08   1.725e-09
25- 50  7.711e-08   6.615e-09
50-150  2.443e-07   2.465e-08
15-150  3.366e-07   2.640e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 17.8300       (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  155.79     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.10e-11 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.440e-08   2.760e-09
25- 50  8.541e-08   7.090e-09
50-150  1.873e-07   4.560e-08
15-150  3.171e-07   4.190e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.15729        (-1.2754      1.48477)
R1^2/D10^2  : 2.46967        (-1.0076      1.86229)
kT2 [keV]   : 48.8810        (-11.0477      24.0089)
R2^2/D10^2  : 1.35145E-02    (-0.00812731   0.0131895)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   83.05     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.62e-03 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.372e-08   6.895e-09
25- 50  8.034e-08   1.291e-08
50-150  3.235e-07   8.590e-08
15-150  4.376e-07   1.074e-07

Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

Power-law model

 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34235     ( -0.0682466   0.0681622 )
Norm@50keV  : 4.61898E-03    ( -0.000160989   0.000160979 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.78     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.59e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 77.64 sec: 0.555586 ( -0.0205758  0.0206433 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.50859e-06 ( -1.35148e-07  1.35821e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34173     ( -0.160388   0.0666083 )
Epeak [keV] : 9999.34      ( -9999.36 -9999.36 )
Norm@50keV  : 4.62918E-03    ( -0.000161487   0.000876467 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.83     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.19e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 77.64 sec: 0.555750 ( -0.010798  0.020236 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.5075e-06 ( -1.33968e-07  1.34278e-07 ) ergs/cm2

Band function

 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

S(25-50 keV) vs. S(50-100 keV) plot

S(25-50 keV)  = 8.00e-07
S(50-100 keV) = 1.26e-06

T90 vs. Hardness ratio plot

T90                                   = 56.7959998846054 sec.
Hardness ratio (energy fluence ratio) = 1.575

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.33005
Count Ratio (50-100 keV) / (15-25 keV) = 1.12255

Mask shadow pattern

IMX = 1.601788840656498E-01, IMY = -1.392908094200087E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

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:
-293.776000 -3.844000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
154.5756  79.3917    3.6  16.0   40.9   1.2796   3.2 ------	UNKNOWN                       
122.1411  22.9811    3.6  42.2 -136.8   2.1218   3.2 ------	UNKNOWN

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

Time interval of the image:
-3.844000 73.792000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
145.4681  75.8232    0.3  12.0   41.0   5.5487  38.7 ------	UNKNOWN                       
 54.6769  59.6121    2.3  35.0  -32.9   0.8401   5.0 ------	UNKNOWN                       
 37.1205  43.0816    2.7  54.6  -35.7   3.1410   4.3 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
260.924600 618.124680
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5777 -40.5553    2.6  48.7  166.2   7.5090   4.5    2.2	Vela X-1                      
120.7138 -14.3022    2.1  35.3 -154.0   3.2866   5.5 ------	UNKNOWN                       
119.8316  43.9287    2.3  45.6  -57.8  10.9346   5.0 ------	UNKNOWN

Plot creation:
Mon Oct 24 12:43:50 EDT 2022