batgrbproduct analysis for trigger=776347

batgrbproduct Analysis for Trigger=776347

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): Fri Oct 20 14:27:44 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger776347
======================================================================

  Trigger: 00776347      Segment: 000

  BAT Trigger Time: 528796552   [s; MET]
      Trigger Stop: 528796640   [s; MET]
               UTC: 2017-10-04T07:55:32.213440    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 139.161615042698   Dec: 52.6799760162536  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    15.15
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    15.15

  Flight Position:   [ source = BAT ]
    RA: 139.161615042698   Dec: 52.6799760162536  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 139.146324049161   Dec: 52.6850512156684  [deg; J2000]  
        { 09h 16m 35.1s , +52d 41' 06.2" }
         +/- 1.27284867325174 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.391004819460118 [arcmin] (formal 1-sigma fit error)
    SNR: 21.5495037724106
 
  Angular difference between Flight and Ground position is 0.634096 arcmin
 
  Partial Coding Fraction: 0.421875    [ including projection effects ]

  Duration
     T90: 105.539999961853 +/- 14.3064433213744
        Measured from: 15.3439999818802
                   to: 120.883999943733     [s; relative to TRIGTIME]
     T50: 44.8079999685287 +/- 7.64174015467547
        Measured from: 31.0199999809265
                   to: 75.8279999494553     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 48.339999973774     
                   to: 49.339999973774     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 10.5879999995232     
                   to: 136.976000010967     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.419394   1.634962   1.247011   0.342993
           0.100499   0.105177   0.092404   0.081000 [error]
 Peak      0.041803   0.038029   0.020514   0.006670
           0.009940   0.009933   0.008353   0.007582 [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 4.73e-07 7.82e-07 9.80e-07 2.44e-06 2.92e-06 4.68e-06   erg/cm2
              Error 5.63e-08 5.54e-08 9.18e-08 4.95e-07 2.17e-07 5.63e-07   erg/cm2
Peak flux Power-law 3.85e-01 3.10e-01 1.69e-01 1.34e-01 9.24e-01 9.97e-01   ph/cm2/s
              Error 1.75e-01 8.75e-02 7.30e-02 1.21e-01 2.63e-01 2.78e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.73e-07 7.76e-07 9.75e-07 2.65e-06 2.93e-06 4.69e-06   erg/cm2
              Error -------- -------- 1.19e-07 5.90e-07 2.71e-07 6.98e-07   erg/cm2
Peak flux Cutoff-PL 3.68e-01 2.42e-01 1.07e-01 7.80e-02 7.50e-01 7.97e-01   ph/cm2/s
              Error -------- 1.42e-01 1.65e-01 8.35e-02 -------- --------   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    1.674    0.126    -      -           2.49e-03 1.75e-04   54.000 57
CPL   1.673    0.638    10000.0   -0.0      2.49e-03 1.72e-04   54.000 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.879    0.578    -      -           6.49e-03 2.14e-03   51.050 57
CPL   2.567    1.024     198.2    0.0      2.96e-03 0.00e+00   50.710 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: 96.704000 sec.
T50 in the 50-300 keV band: 41.600000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  126.388   10.588  136.976
T90   105.540   15.344  120.884
T50    44.808   31.020   75.828
Peak    1.000   48.340   49.340

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
  139.1463    52.6851   0.0089    44.6436    -6.0914         4.4875660     21.550 TRIG_00776347                 
 
Foreground time interval of the image:
 10.588  96.301 (delta_t =  85.713 [sec])
Background time interval of the image:
-651.699 -634.660 (delta_t =  17.040 [sec])
-239.000  10.588 (delta_t = 249.588 [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 88.000000

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 88.000000

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 88.000000

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   10.588 sec. to  136.976 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.67435     ( -0.12484   0.1265 )
Norm@50keV  : 2.48858E-03    ( -0.00017563   0.000174595 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.00 using 59 PHA bins.
# Reduced chi-squared =         0.9473 for     57 degrees of freedom 
# Null hypothesis probability =   5.885010e-01
 
Photon flux (15-150 keV)    in 126.4 sec: 0.327618 ( -0.023278  0.023362 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.91916e-06 ( -2.16214e-07  2.17428e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   10.588 sec. to  136.976 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.67273     ( -0.381322   0.895285 )
Epeak [keV] : 1.00000E+04      ( -9999.99 -10000 )
Norm@50keV  : 2.49347E-03    ( -0.000176551   0.000168206 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.00 using 59 PHA bins.
# Reduced chi-squared =         0.9643 for     56 degrees of freedom 
# Null hypothesis probability =   5.509492e-01
 
Photon flux (15-150 keV)    in 126.4 sec: 0.329116 ( -0.031209  0.027836 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.9331e-06 ( -2.85287e-07  2.55773e-07 ) ergs/cm2

Band function

Time interval is from   10.588 sec. to  136.976 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]    : 14.2258  (  )
R^2/D10^2   : 4.17854E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         122.77 using 59 PHA bins.
# Reduced chi-squared =         2.1538 for     57 degrees of freedom 
# Null hypothesis probability =   1.007344e-06
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.254e-07   3.065e-08
25- 50  8.517e-07   7.407e-08
50-150  1.144e-06   1.610e-07
15-150  2.221e-06   1.972e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 159.846       (-45.6378      -159.607)
Norm        : 1.32942       (-0.103956     0.124142)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.80 using 59 PHA bins.
# Reduced chi-squared =         0.9964 for     57 degrees of freedom 
# Null hypothesis probability =   4.827079e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.291e-07   4.260e-08
25- 50  8.026e-07   1.298e-07
50-150  1.625e-06   6.730e-07
15-150  2.857e-06   8.102e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.13055        (-1.33407      1.56702)
R1^2/D10^2  : 0.622184        (-0.347501      1.02052)
kT2 [keV]   : 25.3597        (-4.74255      8.36635)
R2^2/D10^2  : 4.26756E-03    (-0.00270022   0.00498895)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.63 using 59 PHA bins.
# Reduced chi-squared =          1.048 for     55 degrees of freedom 
# Null hypothesis probability =   3.781992e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.646e-07   1.225e-07
25- 50  7.647e-07   1.729e-07
50-150  1.668e-06   4.852e-07
15-150  2.898e-06   6.977e-07

Peak spectrum fit

Power-law model

Time interval is from   48.340 sec. to   49.340 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.87893     ( -0.544812   0.611689 )
Norm@50keV  : 6.49293E-03    ( -0.00223906   0.00204274 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.05 using 59 PHA bins.
# Reduced chi-squared =         0.8956 for     57 degrees of freedom 
# Null hypothesis probability =   6.967361e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.923638 ( -0.262607  0.263412 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.9698e-08 ( -1.90705e-08  1.95266e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   48.340 sec. to   49.340 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.56675     ( -1.84623   0.202254 )
Epeak [keV] : 198.187      (   )
Norm@50keV  : 2.96312E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.71 using 59 PHA bins.
# Reduced chi-squared =         0.9056 for     56 degrees of freedom 
# Null hypothesis probability =   6.745867e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.749869 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.46701e-08 ( -2.9954e-08  1.9507e-08 ) ergs/cm2

Band function

Time interval is from   48.340 sec. to   49.340 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]    : 10.7306  (-4.78078  7.93604)
R^2/D10^2   : 0.309142  (-0.297766   2.67718)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.37 using 59 PHA bins.
# Reduced chi-squared =          1.024 for     57 degrees of freedom 
# Null hypothesis probability =   4.246751e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.398e-09   4.663e-09
25- 50  2.025e-08   1.217e-08
50-150  1.292e-08   8.910e-09
15-150  4.057e-08   2.531e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 101.114       (-65.6623      -101.767)
Norm        : 3.98231       (-1.37228     2.66314)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.13 using 59 PHA bins.
# Reduced chi-squared =         0.9146 for     57 degrees of freedom 
# Null hypothesis probability =   6.578740e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.041e-08   6.490e-09
25- 50  1.804e-08   1.041e-08
50-150  2.941e-08   2.312e-08
15-150  5.786e-08   3.858e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.29308        (-2.63038      4.82787)
R1^2/D10^2  : 4.16703        (-3.78028      104.368)
kT2 [keV]   : 31.8026        (-18.442      -32.0745)
R2^2/D10^2  : 5.22293E-03    (-0.00492932   0.0560776)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.71 using 59 PHA bins.
# Reduced chi-squared =         0.9220 for     55 degrees of freedom 
# Null hypothesis probability =   6.390957e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.346e-08   8.475e-09
25- 50  1.452e-08   8.465e-09
50-150  3.555e-08   2.250e-08
15-150  6.353e-08   3.509e-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: 1.58542     ( -0.12159   0.122594 )
Norm@50keV  : 3.29765E-03    ( -0.000223999   0.000223362 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.27 using 59 PHA bins.
# Reduced chi-squared =         0.8995 for     57 degrees of freedom 
# Null hypothesis probability =   6.888155e-01
 
Photon flux (15-150 keV)    in 85.71 sec: 0.421872 ( -0.0297709  0.0298804 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.6481e-06 ( -1.91486e-07  1.92539e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.58114     ( -0.121693   0.123633 )
Epeak [keV] : 9999.25      ( -9999.35 -9999.35 )
Norm@50keV  : 3.30483E-03    ( -0.00159059   0.000796148 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.28 using 59 PHA bins.
# Reduced chi-squared =         0.9158 for     56 degrees of freedom 
# Null hypothesis probability =   6.537116e-01
 
Photon flux (15-150 keV)    in 85.71 sec: 0.421660 ( -0.029225  0.029879 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.64695e-06 ( -1.89839e-07  1.9097e-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)  = 7.82e-07
S(50-100 keV) = 9.80e-07

T90 vs. Hardness ratio plot

T90                                   = 105.539999961853 sec.
Hardness ratio (energy fluence ratio) = 1.2532

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.15187
Count Ratio (50-100 keV) / (15-25 keV) = 0.878552

Mask shadow pattern

IMX = 9.820587002473435E-01, IMY = 1.048028123701253E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 88.000000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 88.000000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 88.000000

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:
-651.699390 -634.659800
-239.000000 10.588000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.6711  35.2666    0.0  31.4  164.9  -0.0863  -0.3   11.4	Her X-1                       
282.4138  46.6084    2.6  39.8  126.2   2.6233   4.5 ------	UNKNOWN                       
270.7280  77.6797    2.2  29.3   72.0   1.8109   5.1 ------	UNKNOWN                       
137.9266  32.5429    2.9  58.9  -24.4   5.8121   4.0 ------	UNKNOWN                       
185.8189  21.2712    3.2  41.4  -78.2   3.3275   3.6 ------	UNKNOWN                       
213.7333   9.3484    2.3  45.3 -121.2   4.2525   4.9 ------	UNKNOWN

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

Time interval of the image:
10.588000 96.300600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.5364  35.2919   10.6  31.3  165.0   0.1582   1.1    4.9	Her X-1                       
269.7883  16.7007    2.2  54.3  165.4   2.6422   5.2 ------	UNKNOWN                       
139.1463  52.6851    0.5  44.6   -6.1   4.4882  21.6 ------	UNKNOWN                       
201.7734  30.8226    2.5  26.6  -94.1   0.7043   4.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
163.700600 237.300580
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
211.9394  73.6878    3.2  35.6  172.7   0.4360   3.6 ------	UNKNOWN                       
226.8292  41.7959    2.3  56.8 -151.9   2.5902   4.9 ------	UNKNOWN

Plot creation:
Fri Oct 20 14:56:15 EDT 2017