batgrbproduct analysis for trigger=1040345

batgrbproduct Analysis for Trigger=1040345

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): Fri Jul 29 23:40:28 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1040345
======================================================================

  Trigger: 01040345      Segment: 000

  BAT Trigger Time: 639131260.736   [s; MET]
      Trigger Stop: 639131261.76   [s; MET]
               UTC: 2021-04-03T08:27:13.956380    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 2.76672918535528   Dec: -32.9992877873351  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.52
     Image Trigger?:     NO
     Rate S/N Ratio:     10.5830052442584  [ if not an image trigger ]
     Image S/N Ratio:    7.52

  Flight Position:   [ source = BAT ]
    RA: 2.76672918535528   Dec: -32.9992877873351  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 2.77825676056147   Dec: -33.0023921000544  [deg; J2000]  
        { 00h 11m 06.8s , -33d 00' 08.6" }
         +/- 1.14896565159282 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.408885577260038 [arcmin] (formal 1-sigma fit error)
    SNR: 24.9439632313756
 
  Angular difference between Flight and Ground position is 0.609235 arcmin
 
  Partial Coding Fraction: 0.8046875    [ including projection effects ]

  Duration
     T90: 167.659999966621 +/- 7.82184770492931
        Measured from: -35.8799999952316
                   to: 131.77999997139     [s; relative to TRIGTIME]
     T50: 98.6840000152588 +/- 3.79194296832595
        Measured from: 0.972000002861023
                   to: 99.6560000181198     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.368000030517578     
                   to: 1.36800003051758     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -41.5119999647141     
                   to: 137.180000066757     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.264412   2.516782   0.961812   0.047284
           0.084976   0.087598   0.075913   0.066699 [error]
 Peak      0.044735   0.049202   0.031357   0.004345
           0.006820   0.007077   0.006232   0.004860 [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 7.54e-07 9.42e-07 8.56e-07 1.35e-06 3.02e-06 3.90e-06   erg/cm2
              Error 5.51e-08 4.51e-08 7.22e-08 2.29e-07 1.64e-07 3.04e-07   erg/cm2
Peak flux Power-law 3.92e-01 3.52e-01 2.18e-01 2.05e-01 1.05e+00 1.17e+00   ph/cm2/s
              Error 9.09e-02 5.52e-02 4.88e-02 8.81e-02 1.64e-01 1.87e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.58e-07 1.05e-06 7.93e-07 2.64e-07 2.70e-06 2.77e-06   erg/cm2
              Error 6.66e-08 6.12e-08 8.95e-08 1.66e-07 1.90e-07 2.54e-07   erg/cm2
Peak flux Cutoff-PL 3.30e-01 4.05e-01 2.28e-01 5.49e-02 1.01e+00 1.02e+00   ph/cm2/s
              Error 1.12e-01 7.76e-02 5.92e-02 9.68e-02 1.70e-01 1.89e-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    2.139    0.097    -      -           1.81e-03 1.09e-04   74.240 57
CPL   0.964    0.517      36.9    5.0      8.30e-03 6.23e-03   54.470 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.694    0.264    -      -           7.91e-03 1.38e-03   48.530 57
CPL   0.385    1.542      56.1   83.1      4.08e-02 1.99e-01   45.310 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: 173.632000 sec.
T50 in the 50-300 keV band: 112.960000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  178.692  -41.512  137.180
T90   167.660  -35.880  131.780
T50    98.684    0.972   99.656
Peak    1.000    0.368    1.368

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
    2.7783   -33.0024   0.0077    20.1553  -113.4665         5.4642150     24.944 TRIG_01040345                 
 
Foreground time interval of the image:
-41.512 137.180 (delta_t = 178.692 [sec])
Background time interval of the image:
-239.736 -41.512 (delta_t = 198.224 [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  -41.512 sec. to  137.180 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.13894     ( -0.0954955   0.0979627 )
Norm@50keV  : 1.80855E-03    ( -0.000109565   0.000108536 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   74.24     using 59 bins.
 Reduced chi-squared = 1.30246
# Null hypothesis probability of 6.21e-02 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 178.7 sec: 0.290152 ( -0.014311  0.014336 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.01567e-06 ( -1.62849e-07  1.64458e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -41.512 sec. to  137.180 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.964136     ( -0.547066   0.486828 )
Epeak [keV] : 36.9070      ( -5.62927 4.35887 )
Norm@50keV  : 8.30175E-03    ( -0.00385535   0.00860376 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.47     using 59 bins.
 Reduced chi-squared = 0.972679
# Null hypothesis probability of 5.33e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 178.7 sec: 0.271190 ( -0.015865  0.015938 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.69565e-06 ( -1.85591e-07  1.94324e-07 ) ergs/cm2

Band function

Time interval is from  -41.512 sec. to  137.180 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]    : 9.96694  (-0.5185  0.546634)
R^2/D10^2   : 0.130360  (-0.024857   0.0307391)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   94.78     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.24e-03 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.708e-07   4.092e-08
25- 50  1.165e-06   5.611e-08
50-150  6.022e-07   7.925e-08
15-150  2.238e-06   1.305e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 54.2665       (-6.9296      8.70951)
Norm        : 1.55248       (-0.123866     0.150414)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.92     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.16e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.902e-07   3.565e-08
25- 50  1.020e-06   9.864e-08
50-150  1.067e-06   2.646e-07
15-150  2.777e-06   3.931e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.49130        (-1.2691      1.68976)
R1^2/D10^2  : 1.55417        (-1.05251      5.59501)
kT2 [keV]   : 13.0502        (-1.59746      2.96271)
R2^2/D10^2  : 3.66696E-02    (-0.0232305   0.0306145)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.12     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.33e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.676e-07   2.595e-07
25- 50  1.032e-06   2.095e-07
50-150  8.883e-07   1.997e-07
15-150  2.588e-06   5.453e-07

Peak spectrum fit

Power-law model

Time interval is from    0.368 sec. to    1.368 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.69418     ( -0.256013   0.271593 )
Norm@50keV  : 7.91094E-03    ( -0.00139898   0.00136814 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   48.53     using 59 bins.
 Reduced chi-squared = 0.851404
# Null hypothesis probability of 7.80e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.04858 ( -0.163681  0.16371 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.32909e-08 ( -1.34029e-08  1.36852e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.368 sec. to    1.368 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.384593     ( -1.83573   1.24868 )
Epeak [keV] : 56.0632      ( -13.1877 152.948 )
Norm@50keV  : 4.07524E-02    ( -0.0407595   0.357404 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   45.31     using 59 bins.
 Reduced chi-squared = 0.809107
# Null hypothesis probability of 8.46e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.00665 ( -0.170954  0.16977 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.65426e-08 ( -1.38924e-08  1.50799e-08 ) ergs/cm2

Band function

Time interval is from    0.368 sec. to    1.368 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]    : 12.5378  (-1.88396  2.27632)
R^2/D10^2   : 0.230606  (-0.105421   0.18458)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   48.03     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.95e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.686e-09   2.173e-09
25- 50  2.544e-08   5.770e-09
50-150  2.473e-08   8.075e-09
15-150  5.786e-08   1.326e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 125.327       (-54.0648      -121.647)
Norm        : 4.44515       (-0.748757     1.04109)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   46.64     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.35e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.156e-08   4.990e-09
25- 50  2.083e-08   9.770e-09
50-150  3.796e-08   2.424e-08
15-150  7.034e-08   3.918e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.09154        (-1.70051      8.656)
R1^2/D10^2  : 21.8767        (-21.4798      207.791)
kT2 [keV]   : 14.1967        (-2.55391      -14.1963)
R2^2/D10^2  : 0.135903    (-0.135562   0.0627889)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.96     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.57e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.070e-08   4.739e-09
25- 50  2.258e-08   9.700e-09
50-150  2.912e-08   1.497e-08
15-150  6.240e-08   2.684e-08

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: 2.13894     ( -0.0954955   0.0979627 )
Norm@50keV  : 1.80855E-03    ( -0.000109565   0.000108536 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   74.24     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.21e-02 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 178.7 sec: 0.290125 ( -0.014308  0.0143344 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.0151e-06 ( -1.62936e-07  1.64435e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.964137     ( -0.547066   0.486828 )
Epeak [keV] : 36.9070      ( -5.62927 4.35887 )
Norm@50keV  : 8.30174E-03    ( -0.00385535   0.00860376 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.47     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.33e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 178.7 sec: 0.271135 ( -0.015856  0.015928 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.69621e-06 ( -1.85526e-07  1.9439e-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)  = 9.42e-07
S(50-100 keV) = 8.56e-07

T90 vs. Hardness ratio plot

T90                                   = 167.659999966621 sec.
Hardness ratio (energy fluence ratio) = 0.908705

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.11145
Count Ratio (50-100 keV) / (15-25 keV) = 0.424751

Mask shadow pattern

IMX = -1.461605609976621E-01, IMY = 3.366851304624006E-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:
-239.736000 -41.512000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 94.3481 -61.4081    3.1  43.0   45.0   1.9623   3.8 ------	UNKNOWN                       
 26.8542 -69.4599    2.2  18.8   72.6   1.1696   5.1 ------	UNKNOWN                       
 69.5482 -55.9502    2.5  33.1   29.1   1.2864   4.6 ------	UNKNOWN                       
 33.9071 -58.6690    2.7  14.1   35.7   0.8063   4.3 ------	UNKNOWN                       
 83.9040 -28.7338    3.0  57.0    4.7   4.3488   3.8 ------	UNKNOWN                       
 70.0206 -18.3488    3.1  56.2  -14.9   2.8399   3.7 ------	UNKNOWN                       
315.4872 -12.7469    2.8  59.6 -161.2   7.5057   4.2 ------	UNKNOWN                       
319.0764 -10.4510    2.9  59.4 -156.4   5.7685   4.0 ------	UNKNOWN

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

Time interval of the image:
-41.512000 137.180000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 48.1719 -71.3138    2.0  25.1   62.4   1.4940   5.8 ------	UNKNOWN                       
  2.7782 -33.0024    0.5  20.2 -113.5   5.4644  24.9 ------	UNKNOWN                       
 14.9765 -16.5643    2.5  35.6  -85.8   2.1129   4.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
877.464610 944.440700
945.264000 962.364000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6262  22.0020    2.4  56.4   -4.0   2.4380   4.8    0.8	Crab

Plot creation:
Sat Jul 30 07:07:40 EDT 2022