batgrbproduct analysis for trigger=817345

batgrbproduct Analysis for Trigger=817345

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): Thu May 31 10:58:23 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger817345
======================================================================

  Trigger: 00817345      Segment: 000

  BAT Trigger Time: 543559050.304   [s; MET]
      Trigger Stop: 543559050.816   [s; MET]
               UTC: 2018-03-24T04:37:09.631100    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 76.5845390141635   Dec: 56.7246966581087  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    18.63
     Image Trigger?:     NO
     Rate S/N Ratio:     73.9864852523757  [ if not an image trigger ]
     Image S/N Ratio:    18.63

  Flight Position:   [ source = BAT ]
    RA: 76.5845390141635   Dec: 56.7246966581087  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 76.5810188019364   Dec: 56.7435464022776  [deg; J2000]  
        { 05h 06m 19.4s , +56d 44' 36.8" }
         +/- 1.37917894234048 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.533598528397135 [arcmin] (formal 1-sigma fit error)
    SNR: 19.2158834006703
 
  Angular difference between Flight and Ground position is 1.136903 arcmin
 
  Partial Coding Fraction: 0.78125    [ including projection effects ]

  Duration
     T90: 7.21599996089935 +/- 1.30228724554167
        Measured from: -4.7720000743866
                   to: 2.44399988651276     [s; relative to TRIGTIME]
     T50: 0.543999910354614 +/- 0.199719810945016
        Measured from: 0.0199999809265137
                   to: 0.563999891281128     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.128000020980835     
                   to: 0.871999979019165     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -5.36000001430511     
                   to: 3.6599999666214     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.256556   0.332722   0.256455   0.070931
           0.022602   0.023943   0.021125   0.017669 [error]
 Peak      0.128798   0.185553   0.206617   0.050883
           0.009892   0.011137   0.010747   0.007490 [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 7.21e-08 1.36e-07 1.99e-07 6.21e-07 5.64e-07 1.03e-06   erg/cm2
              Error 9.97e-09 1.11e-08 2.09e-08 1.44e-07 5.02e-08 1.59e-07   erg/cm2
Peak flux Power-law 1.12e+00 1.37e+00 1.22e+00 1.88e+00 4.36e+00 5.60e+00   ph/cm2/s
              Error 1.29e-01 9.57e-02 8.36e-02 2.76e-01 2.64e-01 3.55e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.35e-08 8.42e-08 8.57e-08 1.92e-07 2.84e-07 4.23e-07   erg/cm2
              Error 1.08e-08 1.23e-08 1.55e-08 -------- 5.41e-08 7.33e-08   erg/cm2
Peak flux Cutoff-PL 1.03e+00 1.40e+00 1.27e+00 1.38e+00 4.31e+00 5.08e+00   ph/cm2/s
              Error 1.67e-01 1.04e-01 1.04e-01 4.18e-01 2.75e-01 6.18e-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    1.453    0.144    -      -           6.54e-03 5.18e-04   63.970 57
CPL   1.451    0.290    10000.0    0.0      6.56e-03 0.00e+00   63.980 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.165    0.104    -      -           3.74e-02 2.20e-03   57.770 57
CPL   0.851    0.404     208.0  -58.8      5.18e-02 2.28e-02   56.100 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: 0.896000 sec.
T50 in the 50-300 keV band: 0.256000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    9.020   -5.360    3.660
T90     7.216   -4.772    2.444
T50     0.544    0.020    0.564
Peak    1.000   -0.128    0.872

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
   76.5810    56.7435   0.0100    18.0357   121.7817         0.9300770     19.216 TRIG_00817345                 
 
Foreground time interval of the image:
 -5.360   3.660 (delta_t =   9.020 [sec])
Background time interval of the image:
-239.304  -5.360 (delta_t = 233.944 [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 0.512000

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 0.512000

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 0.512000

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   -5.360 sec. to    3.660 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.45328     ( -0.143026   0.144205 )
Norm@50keV  : 6.53552E-03    ( -0.000518919   0.000516363 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.97 using 59 PHA bins.
# Reduced chi-squared =          1.122 for     57 degrees of freedom 
# Null hypothesis probability =   2.451820e-01
 
Photon flux (15-150 keV)    in 9.02 sec: 0.806086 ( -0.063405  0.063514 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.63841e-07 ( -4.99436e-08  5.04533e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -5.360 sec. to    3.660 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.45054     ( -0.406981   0.172422 )
Epeak [keV] : 1.00000E+04      ( -10000 -10000 )
Norm@50keV  : 6.55672E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.98 using 59 PHA bins.
# Reduced chi-squared =          1.142 for     56 degrees of freedom 
# Null hypothesis probability =   2.168197e-01
 
Photon flux (15-150 keV)    in 9.02 sec: 0.810758 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.84267e-07 ( -5.57932e-08  5.23891e-08 ) ergs/cm2

Band function

Time interval is from   -5.360 sec. to    3.660 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]    : 15.3248  (-1.67253  1.95301)
R^2/D10^2   : 8.31427E-02  (-0.0279784   0.0411326)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         113.49 using 59 PHA bins.
# Reduced chi-squared =         1.9911 for     57 degrees of freedom 
# Null hypothesis probability =   1.274887e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.674e-08   5.538e-09
25- 50  1.488e-07   1.754e-08
50-150  2.401e-07   4.131e-08
15-150  4.257e-07   4.420e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-39.4767      -200)
Norm        : 3.28251       (-0.254383     0.254383)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.05 using 59 PHA bins.
# Reduced chi-squared =          1.176 for     57 degrees of freedom 
# Null hypothesis probability =   1.704639e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.406e-08   7.410e-09
25- 50  1.425e-07   3.130e-08
50-150  3.124e-07   1.318e-07
15-150  5.290e-07   1.525e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.38425        (-1.7059      1.83242)
R1^2/D10^2  : 0.721780        (-0.371074      1.04355)
kT2 [keV]   : 32.3651        (-8.09492      17.9608)
R2^2/D10^2  : 5.41412E-03    (-0.00392783   0.00894258)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.62 using 59 PHA bins.
# Reduced chi-squared =          1.193 for     55 degrees of freedom 
# Null hypothesis probability =   1.546518e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.771e-08   2.264e-08
25- 50  1.395e-07   4.073e-08
50-150  3.652e-07   1.802e-07
15-150  5.724e-07   2.101e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.128 sec. to    0.872 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16529     ( -0.104072   0.103986 )
Norm@50keV  : 3.73536E-02    ( -0.0022006   0.00220057 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.77 using 59 PHA bins.
# Reduced chi-squared =          1.014 for     57 degrees of freedom 
# Null hypothesis probability =   4.465488e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.36435 ( -0.2638  0.26407 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.82825e-07 ( -2.52394e-08  2.53534e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.128 sec. to    0.872 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.851260     ( -0.451377   0.356632 )
Epeak [keV] : 207.953      ( -90.4041 -207.952 )
Norm@50keV  : 5.17807E-02    ( -0.0159741   0.0297232 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.10 using 59 PHA bins.
# Reduced chi-squared =          1.002 for     56 degrees of freedom 
# Null hypothesis probability =   4.709507e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.30539 ( -0.27491  0.27477 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.13493e-07 ( -1.63078e-08  1.02983e-08 ) ergs/cm2

Band function

Time interval is from   -0.128 sec. to    0.872 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]    : 20.0441  (-1.50587  1.66271)
R^2/D10^2   : 0.204093  (-0.0463367   0.0588207)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         100.87 using 59 PHA bins.
# Reduced chi-squared =         1.7697 for     57 degrees of freedom 
# Null hypothesis probability =   3.061096e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.579e-08   1.850e-09
25- 50  7.878e-08   6.530e-09
50-150  2.347e-07   2.365e-08
15-150  3.293e-07   2.505e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-10.402      -200)
Norm        : 17.9165       (-1.08185     1.08185)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          95.08 using 59 PHA bins.
# Reduced chi-squared =          1.668 for     57 degrees of freedom 
# Null hypothesis probability =   1.161133e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.462e-08   3.015e-09
25- 50  8.584e-08   6.860e-09
50-150  1.883e-07   4.505e-08
15-150  3.187e-07   5.015e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.57436        (-1.7793      2.39941)
R1^2/D10^2  : 6.86544        (-4.90226      29.9328)
kT2 [keV]   : 25.9506        (-3.25095      5.20403)
R2^2/D10^2  : 7.98837E-02    (-0.0378176   0.0470734)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.35 using 59 PHA bins.
# Reduced chi-squared =          1.025 for     55 degrees of freedom 
# Null hypothesis probability =   4.241495e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.446e-08   1.394e-08
25- 50  7.434e-08   1.444e-08
50-150  2.641e-07   3.925e-08
15-150  3.730e-07   5.500e-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: 1.45328     ( -0.143026   0.144205 )
Norm@50keV  : 6.53552E-03    ( -0.000518919   0.000516363 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.97 using 59 PHA bins.
# Reduced chi-squared =          1.122 for     57 degrees of freedom 
# Null hypothesis probability =   2.451820e-01
 
Photon flux (15-150 keV)    in 9.02 sec: 0.806068 ( -0.0634016  0.0635102 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.63773e-07 ( -5.00048e-08  5.04517e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.45054     ( -0.403301   0.177967 )
Epeak [keV] : 1.00000E+04      ( -10000 -10000 )
Norm@50keV  : 6.55672E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.98 using 59 PHA bins.
# Reduced chi-squared =          1.142 for     56 degrees of freedom 
# Null hypothesis probability =   2.168197e-01
 
Photon flux (15-150 keV)    in 9.02 sec: 0.805757 ( -0.06312  0.063442 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.63591e-07 ( -5.07483e-08  4.99537e-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)  = 1.36e-07
S(50-100 keV) = 1.99e-07

T90 vs. Hardness ratio plot

T90                                   = 7.21599996089935 sec.
Hardness ratio (energy fluence ratio) = 1.46324

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.29688
Count Ratio (50-100 keV) / (15-25 keV) = 0.999606

Mask shadow pattern

IMX = -1.714929497662583E-01, IMY = -2.767866785381028E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.512000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.512000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.512000

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:
-239.304000 -5.360000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6455  22.0182    1.0  47.0  163.2   8.0494  11.8    0.7	Crab                          
308.1017  40.9598   66.8  57.9  -23.2  -0.2298  -0.2    0.6	Cyg X-3                       
326.2182  38.2015   14.4  51.3  -38.6  -0.8337  -0.8    7.5	Cyg X-2                       
118.1776  52.2226    3.5  40.9  104.5   2.9312   3.3 ------	UNKNOWN                       
 91.1039  33.8570    2.9  40.5  146.0   2.0111   4.0 ------	UNKNOWN                       
 71.6522  80.6977    2.7  23.3   51.0   1.1344   4.2 ------	UNKNOWN                       
277.7115  56.0604    2.8  56.9    6.4   5.5741   4.1 ------	UNKNOWN                       
324.6723  56.6447    2.3  39.2  -18.8   1.6104   5.0 ------	UNKNOWN                       
340.1037  34.2856    3.3  47.2  -53.3   3.7729   3.5 ------	UNKNOWN

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

Time interval of the image:
-5.360000 3.660000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6356  22.0076    8.5  47.0  163.2  -0.1487  -1.4    0.4	Crab                          
308.0509  40.9359    4.5  57.9  -23.2   0.6079   2.6    2.9	Cyg X-3                       
326.0041  38.2950    5.5  51.3  -38.4   0.3482   2.1    8.0	Cyg X-2                       
 76.5810  56.7435    0.6  18.0  121.8   0.9301  19.2 ------	UNKNOWN                       
 33.9040  43.4999    2.1  16.4 -117.6   0.2474   5.5 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
51.996600 962.821800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6341  22.0071    0.3  35.1 -178.0  36.3286  39.6    0.4	Crab                          
194.8543  66.2356    3.1  48.7   41.7  12.6939   3.7 ------	UNKNOWN                       
114.8286  20.6707    3.5  45.7  139.4   8.7845   3.2 ------	UNKNOWN                       
 48.9930  13.5949    2.8  48.0 -129.3  14.3885   4.1 ------	UNKNOWN                       
 31.9798  29.6497    5.8  41.1  -98.5   8.5091   2.0 ------	UNKNOWN                       
357.4774  46.5498    3.3  47.3  -53.4  14.2289   3.5 ------	UNKNOWN

Plot creation:
Thu May 31 11:07:47 EDT 2018