batgrbproduct analysis for trigger=718023

batgrbproduct Analysis for Trigger=718023

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 v2.46
    Process Start Time (local time): Mon Nov 14 22:02:14 EST 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger718023
======================================================================

  Trigger: 00718023      Segment: 000

  BAT Trigger Time: 498419528.192   [s; MET]
      Trigger Stop: 498419529.216   [s; MET]
               UTC: 2016-10-17T17:51:51.169980    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 142.765381319357   Dec: 43.1418079589348  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.53
     Image Trigger?:     NO
     Rate S/N Ratio:     19.5448202856921  [ if not an image trigger ]
     Image S/N Ratio:    8.53

  Flight Position:   [ source = BAT ]
    RA: 142.765381319357   Dec: 43.1418079589348  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 142.765950837089   Dec: 43.1237910283339  [deg; J2000]  
        { 09h 31m 03.8s , +43d 07' 25.6" }
         +/- 0.919328694193454 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.393986743914146 [arcmin] (formal 1-sigma fit error)
    SNR: 34.3006957395021
 
  Angular difference between Flight and Ground position is 1.081303 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 217.047999918461 +/- 6.86324586240994
        Measured from: -0.807999968528748
                   to: 216.239999949932     [s; relative to TRIGTIME]
     T50: 126.003999948502 +/- 3.4710966645323
        Measured from: 17.1360000371933
                   to: 143.139999985695     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 21.2560000419617     
                   to: 22.2560000419617     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -13.2799999713898     
                   to: 233.420000016689     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.828171   3.352492   2.456268   0.654394
           0.080875   0.084517   0.073984   0.063034 [error]
 Peak      0.091345   0.115948   0.126834   0.036032
           0.006344   0.007140   0.006753   0.005256 [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 7.82e-07 1.37e-06 1.85e-06 5.11e-06 5.38e-06 9.13e-06   erg/cm2
              Error 4.73e-08 4.68e-08 7.54e-08 4.80e-07 1.78e-07 5.22e-07   erg/cm2
Peak flux Power-law 7.03e-01 8.78e-01 7.97e-01 1.26e+00 2.81e+00 3.64e+00   ph/cm2/s
              Error 8.33e-02 6.10e-02 5.37e-02 1.89e-01 1.65e-01 2.29e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.80e-07 1.37e-06 1.85e-06 5.11e-06 5.38e-06 9.52e-06   erg/cm2
              Error -------- -------- -------- -------- 1.71e-07 7.96e-07   erg/cm2
Peak flux Cutoff-PL 7.03e-01 8.78e-01 7.95e-01 1.25e+00 2.83e+00 3.64e+00   ph/cm2/s
              Error -------- 6.10e-02 5.50e-02 -------- 1.65e-01 2.52e-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    1.571    0.061    -      -           2.32e-03 7.17e-05   40.880 57
CPL   1.571    0.086    9999.4    0.0      2.32e-03 2.70e-04   40.910 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.139    0.108    -      -           2.41e-02 1.38e-03   55.630 57
CPL   1.140    0.109    9999.4    0.0      2.42e-02 3.08e-03   55.700 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: 220.672000 sec.
T50 in the 50-300 keV band: 120.960000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  246.700  -13.280  233.420
T90   217.048   -0.808  216.240
T50   126.004   17.136  143.140
Peak    1.000   21.256   22.256

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
  142.7660    43.1238   0.0056     8.7378   -20.0112         1.9352871     34.301 TRIG_00718023                 
 
Foreground time interval of the image:
-13.280  16.109 (delta_t =  29.389 [sec])
Background time interval of the image:
-239.192 -13.280 (delta_t = 225.912 [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  -13.280 sec. to  233.420 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57131     ( -0.0608669   0.061027 )
Norm@50keV  : 2.31872E-03    ( -7.17833e-05   7.16844e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.88 using 59 PHA bins.
# Reduced chi-squared =         0.7172 for     57 degrees of freedom 
# Null hypothesis probability =   9.471233e-01
 
Photon flux (15-150 keV)    in 246.7 sec: 0.295389 ( -0.00982  0.009866 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.37007e-06 ( -1.78014e-07  1.78479e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -13.280 sec. to  233.420 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57125     ( -0.112921   0.0600781 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 2.31957E-03    ( -7.18398e-05   0.000467427 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.91 using 59 PHA bins.
# Reduced chi-squared =         0.7305 for     56 degrees of freedom 
# Null hypothesis probability =   9.350110e-01
 
Photon flux (15-150 keV)    in 246.7 sec: 0.296809 ( -0.012541  0.009393 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.36896e-06 ( -1.63976e-07  1.78439e-07 ) ergs/cm2

Band function

Time interval is from  -13.280 sec. to  233.420 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]    : 15.3961  (  )
R^2/D10^2   : 2.84145E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         299.39 using 59 PHA bins.
# Reduced chi-squared =         5.2525 for     57 degrees of freedom 
# Null hypothesis probability =   1.365413e-34
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.463e-07   2.109e-08
25- 50  1.409e-06   5.625e-08
50-150  2.299e-06   1.452e-07
15-150  4.054e-06   1.542e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-25.1624      -200)
Norm        : 1.18690       (-0.0362943     0.0362943)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.06 using 59 PHA bins.
# Reduced chi-squared =         0.8432 for     57 degrees of freedom 
# Null hypothesis probability =   7.945028e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.293e-07   2.590e-08
25- 50  1.403e-06   4.638e-08
50-150  3.077e-06   9.375e-08
15-150  5.209e-06   1.665e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.92224        (-0.807785      0.904501)
R1^2/D10^2  : 0.332970        (-0.114403      0.192002)
kT2 [keV]   : 27.7474        (-3.23694      4.67352)
R2^2/D10^2  : 2.96211E-03    (-0.00121826   0.00164976)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.48 using 59 PHA bins.
# Reduced chi-squared =         0.9905 for     55 degrees of freedom 
# Null hypothesis probability =   4.944491e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.172e-07   8.635e-08
25- 50  1.388e-06   1.019e-07
50-150  3.205e-06   3.121e-07
15-150  5.309e-06   3.910e-07

Peak spectrum fit

Power-law model

Time interval is from   21.256 sec. to   22.256 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.13916     ( -0.108224   0.107594 )
Norm@50keV  : 2.41255E-02    ( -0.00138245   0.00138237 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.63 using 59 PHA bins.
# Reduced chi-squared =         0.9760 for     57 degrees of freedom 
# Null hypothesis probability =   5.264739e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.80998 ( -0.16529  0.16561 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.49201e-07 ( -1.62364e-08  1.63268e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   21.256 sec. to   22.256 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.14038     ( -0.114666   0.102924 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 2.42485E-02    ( -0.001389   0.00476322 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.70 using 59 PHA bins.
# Reduced chi-squared =         0.9947 for     56 degrees of freedom 
# Null hypothesis probability =   4.861066e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.82860 ( -0.18466  0.14623 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.49109e-07 ( -1.62463e-08  1.6321e-08 ) ergs/cm2

Band function

Time interval is from   21.256 sec. to   22.256 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]    : 21.0257  (  )
R^2/D10^2   : 0.109563  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         138.43 using 59 PHA bins.
# Reduced chi-squared =         2.4287 for     57 degrees of freedom 
# Null hypothesis probability =   1.000370e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.146e-09   1.103e-09
25- 50  4.705e-08   4.280e-09
50-150  1.550e-07   1.545e-08
15-150  2.112e-07   1.640e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-10.0299      -200)
Norm        : 11.4945       (-0.67719     0.67719)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         100.30 using 59 PHA bins.
# Reduced chi-squared =         1.7597 for     57 degrees of freedom 
# Null hypothesis probability =   3.501993e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.862e-08   1.970e-09
25- 50  5.505e-08   4.615e-09
50-150  1.207e-07   2.461e-08
15-150  2.044e-07   3.670e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.94668        (-1.13387      1.50135)
R1^2/D10^2  : 4.40351        (-2.4496      5.83847)
kT2 [keV]   : 31.7842        (-4.49463      7.09245)
R2^2/D10^2  : 2.70869E-02    (-0.012333   0.0165875)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.56 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     55 degrees of freedom 
# Null hypothesis probability =   4.535512e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.455e-08   7.690e-09
25- 50  4.604e-08   6.845e-09
50-150  1.832e-07   2.840e-08
15-150  2.538e-07   3.605e-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: 1.45187     ( -0.0863468   0.0863523 )
Norm@50keV  : 4.25296E-03    ( -0.000199597   0.00019898 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.09 using 59 PHA bins.
# Reduced chi-squared =          1.177 for     57 degrees of freedom 
# Null hypothesis probability =   1.696395e-01
 
Photon flux (15-150 keV)    in 29.39 sec: 0.524362 ( -0.0249435  0.0249882 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.1957e-06 ( -6.22818e-08  6.26169e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44917     ( -0.201465   0.11763 )
Epeak [keV] : 1.00000E+04      ( -10000 -10000 )
Norm@50keV  : 4.26672E-03    ( -0.000200393   0.000196048 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.10 using 59 PHA bins.
# Reduced chi-squared =          1.198 for     56 degrees of freedom 
# Null hypothesis probability =   1.470804e-01
 
Photon flux (15-150 keV)    in 29.39 sec: 0.524541 ( -0.025176  0.02461 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.1952e-06 ( -6.10313e-08  6.19482e-08 ) 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)  = 1.37e-06
S(50-100 keV) = 1.85e-06

T90 vs. Hardness ratio plot

T90                                   = 217.047999918461 sec.
Hardness ratio (energy fluence ratio) = 1.35036

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.18539
Count Ratio (50-100 keV) / (15-25 keV) = 0.868501

Mask shadow pattern

IMX = 1.444179760002690E-01, IMY = 5.259572672914864E-02

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:
-239.192000 -13.280000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
290.4850  82.6007    2.7  44.5  163.9   1.8049   4.3 ------	UNKNOWN                       
261.8604  59.9910    2.3  57.8 -170.6   6.4663   5.1 ------	UNKNOWN                       
188.3119  55.3448    2.8  26.6 -137.3   0.8351   4.1 ------	UNKNOWN                       
215.7651  41.8992    3.4  48.5 -130.3   3.1908   3.4 ------	UNKNOWN

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

Time interval of the image:
-13.280000 16.108590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
142.7660  43.1238    0.3   8.7  -20.0   1.9351  34.3 ------	UNKNOWN                       
180.0872  35.5990    2.2  30.8  -94.5   0.5456   5.3 ------	UNKNOWN                       
200.5499  35.8425    2.6  43.1 -113.3   1.1223   4.5 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
46.508600 659.408590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 78.4399  61.4170    3.1  41.3  111.3   6.5017   3.7 ------	UNKNOWN                       
 96.4018  49.6094    2.9  32.1   90.2   3.0861   4.0 ------	UNKNOWN                       
338.0490  87.8338    3.1  49.0  151.3   5.5085   3.7 ------	UNKNOWN                       
113.6721  73.9020    2.9  33.5  138.0   2.2043   3.9 ------	UNKNOWN                       
115.9905  -6.4759    2.8  55.2    5.1   7.1582   4.2 ------	UNKNOWN                       
142.7544  43.1184    0.9   0.0  -38.3   4.8934  12.5 ------	UNKNOWN                       
135.5068  -7.3431    2.3  50.9  -18.6   4.0846   5.0 ------	UNKNOWN                       
204.5400  34.2098    3.6  48.0 -129.0   5.8264   3.2 ------	UNKNOWN                       
154.1105  -7.9277    3.5  52.1  -42.2   6.8922   3.3 ------	UNKNOWN

Plot creation:
Sun Nov 20 14:30:05 EST 2016