batgrbproduct analysis for trigger=865036

batgrbproduct Analysis for Trigger=865036

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 19 18:04:28 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger865036
======================================================================

  Trigger: 00865036      Segment: 000

  BAT Trigger Time: 560172424.896   [s; MET]
      Trigger Stop: 560172441.28   [s; MET]
               UTC: 2018-10-02T11:26:43.208360    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 64.7359539590011   Dec: 15.2332960680922  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.24
     Image Trigger?:     NO
     Rate S/N Ratio:     7.54983443527075  [ if not an image trigger ]
     Image S/N Ratio:    9.24

  Flight Position:   [ source = BAT ]
    RA: 64.7359539590011   Dec: 15.2332960680922  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 64.7393458792767   Dec: 15.2476624483475  [deg; J2000]  
        { 04h 18m 57.4s , +15d 14' 51.6" }
         +/- 1.81317900222877 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.736842485603701 [arcmin] (formal 1-sigma fit error)
    SNR: 12.9992233901257
 
  Angular difference between Flight and Ground position is 0.884065 arcmin
 
  Partial Coding Fraction: 0.703125    [ including projection effects ]

  Duration
     T90: 63.4079999923706 +/- 12.3483206791846
        Measured from: -22.8719999790192
                   to: 40.5360000133514     [s; relative to TRIGTIME]
     T50: 27.0879999399185 +/- 7.66198305220237
        Measured from: -0.759999990463257
                   to: 26.3279999494553     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 11.3880000114441     
                   to: 12.3880000114441     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -28.37600004673     
                   to: 43.62399995327     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.682027   0.651445   0.312678   0.079195
           0.066987   0.068988   0.059204   0.050881 [error]
 Peak      0.028322   0.029710   0.012539   0.002164
           0.008142   0.008156   0.006976   0.005932 [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 2.24e-07 2.77e-07 2.49e-07 3.89e-07 8.86e-07 1.14e-06   erg/cm2
              Error 3.56e-08 3.32e-08 5.56e-08 1.69e-07 1.27e-07 2.35e-07   erg/cm2
Peak flux Power-law 2.96e-01 2.13e-01 1.01e-01 6.77e-02 6.42e-01 6.77e-01   ph/cm2/s
              Error 1.28e-01 6.71e-02 5.64e-02 8.31e-02 1.99e-01 2.13e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.19e-07 2.89e-07 2.46e-07 2.17e-07 8.57e-07 9.72e-07   erg/cm2
              Error 3.77e-08 -------- 6.05e-08 2.88e-07 1.41e-07 --------   erg/cm2
Peak flux Cutoff-PL 2.91e-01 1.93e-01 8.97e-02 5.97e-02 6.19e-01 6.69e-01   ph/cm2/s
              Error 1.40e-01 1.50e-01 -------- 5.90e-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    2.153    0.234    -      -           1.31e-03 2.12e-04   47.420 57
CPL   1.835    0.623      21.3    0.0      2.02e-03 0.00e+00   47.020 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.073    0.657    -      -           4.13e-03 1.77e-03   64.010 57
CPL   1.988    0.000      12.0    0.0      4.45e-03 0.00e+00   64.050 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   72.000  -28.376   43.624
T90    63.408  -22.872   40.536
T50    27.088   -0.760   26.328
Peak    1.000   11.388   12.388

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
   64.7393    15.2477   0.0149    32.9350     4.1658         1.7526560     12.999 TRIG_00865036                 
 
Foreground time interval of the image:
-28.376  43.624 (delta_t =  72.000 [sec])
Background time interval of the image:
-239.896 -28.376 (delta_t = 211.520 [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 16.384000

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 16.384000

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 16.384000

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  -28.376 sec. to   43.624 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.15346     ( -0.224855   0.243953 )
Norm@50keV  : 1.31491E-03    ( -0.000215435   0.000209037 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.42 using 59 PHA bins.
# Reduced chi-squared =         0.8319 for     57 degrees of freedom 
# Null hypothesis probability =   8.131543e-01
 
Photon flux (15-150 keV)    in 72 sec: 0.212519 ( -0.024619  0.024621 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.84894e-07 ( -1.25019e-07  1.28183e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -28.376 sec. to   43.624 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.83517     ( -1.00152   0.244607 )
Epeak [keV] : 21.3061      (   )
Norm@50keV  : 2.01917E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.02 using 59 PHA bins.
# Reduced chi-squared =         0.8396 for     56 degrees of freedom 
# Null hypothesis probability =   7.981175e-01
 
Photon flux (15-150 keV)    in 72 sec: 0.210154 ( -0.025389  0.025073 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.58305e-07 ( -1.38222e-07  1.43729e-07 ) ergs/cm2

Band function

Time interval is from  -28.376 sec. to   43.624 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]    : 9.33126  (-1.34938  1.53271)
R^2/D10^2   : 0.124929  (-0.0554788   0.104637)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.89 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     57 degrees of freedom 
# Null hypothesis probability =   1.964038e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.552e-07   3.571e-08
25- 50  3.487e-07   6.120e-08
50-150  1.484e-07   4.846e-08
15-150  6.523e-07   1.063e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 54.0954       (-15.9409      24.6801)
Norm        : 1.15073       (-0.208481     0.297865)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.86 using 59 PHA bins.
# Reduced chi-squared =         0.8396 for     57 degrees of freedom 
# Null hypothesis probability =   8.005502e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.060e-07   3.384e-08
25- 50  3.040e-07   8.622e-08
50-150  3.173e-07   1.920e-07
15-150  8.273e-07   3.133e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.92354        (-1.31165      1.76221)
R1^2/D10^2  : 2.81582        (-2.1618      6.89965)
kT2 [keV]   : 14.4962        (-3.21256      5.74998)
R2^2/D10^2  : 1.78666E-02    (-0.0135287   0.0334614)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.57 using 59 PHA bins.
# Reduced chi-squared =         0.8467 for     55 degrees of freedom 
# Null hypothesis probability =   7.836798e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.247e-07   1.132e-07
25- 50  2.762e-07   1.321e-07
50-150  3.087e-07   1.631e-07
15-150  8.096e-07   3.600e-07

Peak spectrum fit

Power-law model

Time interval is from   11.388 sec. to   12.388 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.07282     ( -0.586847   0.726946 )
Norm@50keV  : 4.13290E-03    ( -0.00184598   0.00168768 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.01 using 59 PHA bins.
# Reduced chi-squared =          1.123 for     57 degrees of freedom 
# Null hypothesis probability =   2.439772e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.641678 ( -0.198823  0.198827 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.83116e-08 ( -1.44604e-08  1.53347e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   11.388 sec. to   12.388 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.98828     (     )
Epeak [keV] : 11.9811      (   )
Norm@50keV  : 4.45372E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.05 using 59 PHA bins.
# Reduced chi-squared =          1.144 for     56 degrees of freedom 
# Null hypothesis probability =   2.149296e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.618501 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Band function

Time interval is from   11.388 sec. to   12.388 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]    : 8.33347  (-2.74583  4.27013)
R^2/D10^2   : 0.592227  (-0.590824   2.31132)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.86 using 59 PHA bins.
# Reduced chi-squared =          1.173 for     57 degrees of freedom 
# Null hypothesis probability =   1.745123e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.653e-09   4.734e-09
25- 50  1.436e-08   8.840e-09
50-150  4.306e-09   3.362e-09
15-150  2.632e-08   1.620e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 57.8691       (-35.7049      -57.8867)
Norm        : 3.40229       (-1.47254     3.2808)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.54 using 59 PHA bins.
# Reduced chi-squared =          1.132 for     57 degrees of freedom 
# Null hypothesis probability =   2.299544e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.499e-09   5.023e-09
25- 50  1.279e-08   7.470e-09
50-150  1.412e-08   1.065e-08
15-150  3.541e-08   2.246e-08

Double BB

# Reduced chi-squared =          1.158 for     55 degrees of freedom 
# Reduced chi-squared =          1.157 for     55 degrees of freedom 
# Reduced chi-squared =          1.157 for     55 degrees of freedom 
# Null hypothesis probability =   1.935470e-01
# Null hypothesis probability =   1.943712e-01
# Null hypothesis probability =   1.949258e-01
# Null hypothesis probability =   1.954266e-01
# Null hypothesis probability =   1.958781e-01
# Null hypothesis probability =   1.962841e-01
# Null hypothesis probability =   1.966481e-01
# Null hypothesis probability =   1.974757e-01
# Null hypothesis probability =   1.984048e-01
# Null hypothesis probability =   1.988944e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.857e-09   5.825e-09
25- 50  1.236e-08   7.465e-09
50-150  1.961e-08   1.208e-08
15-150  4.082e-08   2.055e-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: 2.15346     ( -0.224855   0.243953 )
Norm@50keV  : 1.31491E-03    ( -0.000215435   0.000209037 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.42 using 59 PHA bins.
# Reduced chi-squared =         0.8319 for     57 degrees of freedom 
# Null hypothesis probability =   8.131543e-01
 
Photon flux (15-150 keV)    in 72 sec: 0.212499 ( -0.0246163  0.0246192 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.84736e-07 ( -1.24984e-07  1.28183e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.83522     ( -1.00154   0.244601 )
Epeak [keV] : 21.3023      (   )
Norm@50keV  : 2.01903E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.02 using 59 PHA bins.
# Reduced chi-squared =         0.8396 for     56 degrees of freedom 
# Null hypothesis probability =   7.981175e-01
 
Photon flux (15-150 keV)    in 72 sec: 0.210097 ( -0.024782  0.012703 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.58506e-07 ( -1.38478e-07  1.44252e-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)  = 2.77e-07
S(50-100 keV) = 2.49e-07

T90 vs. Hardness ratio plot

T90                                   = 63.4079999923706 sec.
Hardness ratio (energy fluence ratio) = 0.898917

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.95516
Count Ratio (50-100 keV) / (15-25 keV) = 0.458454

Mask shadow pattern

IMX = 6.460851429346581E-01, IMY = -4.705791420954174E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000

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:
-239.896000 -28.376000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6294  22.0193    0.4  38.9  -27.1   8.3626  26.4    0.4	Crab                          
331.2719  59.7301    2.3  45.7 -179.1   2.2196   5.1 ------	UNKNOWN                       
119.1817  77.8229    2.9  45.1 -120.1   4.3896   4.0 ------	UNKNOWN

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

Time interval of the image:
-28.376000 43.624000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.5289  22.1271  115.9  38.8  -27.1   0.0161   0.1    8.9	Crab                          
 64.7394  15.2477    0.9  32.9    4.2   1.7525  13.0 ------	UNKNOWN                       
100.8703  22.1963    2.1  51.1  -41.8   3.0594   5.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
124.604600 962.164000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6258  22.0155    0.3  19.1 -107.6  35.0848  44.7    0.4	Crab                          
 52.8147 -39.4648    4.0  55.8   17.1  11.7588   2.9 ------	UNKNOWN                       
 61.4867  -4.8045    2.9  20.3   15.3   2.8569   4.0 ------	UNKNOWN                       
 78.3889  33.8717    2.5  22.4 -143.0   3.0604   4.6 ------	UNKNOWN

Plot creation:
Fri Oct 26 12:20:50 EDT 2018