batgrbproduct analysis for trigger=727167

batgrbproduct Analysis for Trigger=727167

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): Wed Jan  4 17:38:48 EST 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger727167
======================================================================

  Trigger: 00727167      Segment: 000

  BAT Trigger Time: 503630872   [s; MET]
      Trigger Stop: 503630976   [s; MET]
               UTC: 2016-12-17T01:27:34.681680    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 150.637595876745   Dec: 52.3891561258775  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.21
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.21

  Flight Position:   [ source = BAT ]
    RA: 150.637595876745   Dec: 52.3891561258775  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 150.646957630497   Dec: 52.3410920192738  [deg; J2000]  
        { 10h 02m 35.3s , +52d 20' 27.9" }
         +/- 2.04522115432023 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.07701107934685 [arcmin] (formal 1-sigma fit error)
    SNR: 10.9446959174136
 
  Angular difference between Flight and Ground position is 2.904172 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 12.0359999537468 +/- 2.44943262012102
        Measured from: 35.8999999761581
                   to: 47.9359999299049     [s; relative to TRIGTIME]
     T50: 6.58799993991852 +/- 2.36849407779991
        Measured from: 37.7039999961853
                   to: 44.2919999361038     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 42.6439999938011     
                   to: 43.6439999938011     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 32.8719999790192     
                   to: 48.7480000257492     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.230025   0.189550   0.048874   0.009855
           0.024080   0.024565   0.020366   0.017398 [error]
 Peak      0.031207   0.019587   0.002324   0.002651
           0.006018   0.006260   0.005141   0.004311 [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 6.99e-08 6.61e-08 4.35e-08 4.45e-08 1.97e-07 2.24e-07   erg/cm2
              Error 1.13e-08 1.16e-08 1.55e-08 2.90e-08 3.69e-08 5.36e-08   erg/cm2
Peak flux Power-law 2.49e-01 1.31e-01 4.27e-02 1.79e-02 4.32e-01 4.40e-01   ph/cm2/s
              Error 8.02e-02 5.06e-02 3.21e-02 2.69e-02 1.33e-01 1.39e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.81e-08 7.45e-08 3.10e-08 3.92e-09 1.76e-07 1.78e-07   erg/cm2
              Error 1.21e-08 -------- 2.02e-08 -------- 3.66e-08 4.19e-08   erg/cm2
Peak flux Cutoff-PL -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   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    2.603    0.326    -      -           1.21e-03 3.18e-04   60.630 57
CPL   1.252    1.571      18.3   13.6      9.50e-03 1.32e-01   58.200 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.615    0.713    -      -           2.04e-03 1.20e-03   68.870 57
CPL   0.964    0.000      18.1    0.0      3.11e-02 0.00e+00   68.230 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   15.876   32.872   48.748
T90    12.036   35.900   47.936
T50     6.588   37.704   44.292
Peak    1.000   42.644   43.644

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
  150.6470    52.3411   0.0176     5.2311   -58.3355         0.5131218     10.945 TRIG_00727167                 
 
Foreground time interval of the image:
 32.872  48.748 (delta_t =  15.876 [sec])
Background time interval of the image:
-337.799 -310.156 (delta_t =  27.643 [sec])
-239.000  32.872 (delta_t = 271.872 [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

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

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   32.872 sec. to   48.748 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.60255     ( -0.303881   0.348751 )
Norm@50keV  : 1.20796E-03    ( -0.000315673   0.000319805 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.63 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     57 degrees of freedom 
# Null hypothesis probability =   3.463845e-01
 
Photon flux (15-150 keV)    in 15.88 sec: 0.253067 ( -0.035461  0.035498 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.97657e-07 ( -3.58224e-08  3.79299e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   32.872 sec. to   48.748 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25161     ( -2.08377   1.05805 )
Epeak [keV] : 18.2668      ( -16.7256 10.4402 )
Norm@50keV  : 9.49867E-03    ( -0.00949383   0.253715 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.20 using 59 PHA bins.
# Reduced chi-squared =          1.039 for     56 degrees of freedom 
# Null hypothesis probability =   3.942713e-01
 
Photon flux (15-150 keV)    in 15.88 sec: 0.246701 ( -0.035077  0.035471 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.76946e-07 ( -3.27643e-08  4.03393e-08 ) ergs/cm2

Band function

Time interval is from   32.872 sec. to   48.748 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]    : 6.65054  (-0.993543  1.1415)
R^2/D10^2   : 0.597753  (-0.288724   0.58595)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.84 using 59 PHA bins.
# Reduced chi-squared =          1.102 for     57 degrees of freedom 
# Null hypothesis probability =   2.771552e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.376e-08   1.492e-08
25- 50  7.890e-08   1.879e-08
50-150  1.082e-08   5.587e-09
15-150  1.535e-07   3.404e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 27.3453       (-7.65856      11.4997)
Norm        : 2.22185       (-0.59602     0.904137)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.22 using 59 PHA bins.
# Reduced chi-squared =          1.021 for     57 degrees of freedom 
# Null hypothesis probability =   4.303013e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.827e-08   1.249e-08
25- 50  7.397e-08   1.727e-08
50-150  3.575e-08   1.851e-08
15-150  1.780e-07   3.832e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.28800        (-4.31539      2.11422)
R1^2/D10^2  : 2.48220        (-1.82344      -2.42491)
kT2 [keV]   : 10.7986        (-10.8767      14.5056)
R2^2/D10^2  : 4.80339E-02    (-0.0457972   0.578959)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.24 using 59 PHA bins.
# Reduced chi-squared =          1.059 for     55 degrees of freedom 
# Null hypothesis probability =   3.568954e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.822e-08   3.676e-08
25- 50  7.290e-08   3.652e-08
50-150  3.358e-08   2.045e-08
15-150  1.747e-07   8.591e-08

Peak spectrum fit

Power-law model

Time interval is from   42.644 sec. to   43.644 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.61465     ( -0.60386   0.821776 )
Norm@50keV  : 2.04484E-03    ( -0.00114677   0.00124542 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.87 using 59 PHA bins.
# Reduced chi-squared =          1.208 for     57 degrees of freedom 
# Null hypothesis probability =   1.347618e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.431724 ( -0.132322  0.133388 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.115e-08 ( -8.35854e-09  9.68543e-09 ) ergs/cm2

Cutoff power-law model

Time interval is from   42.644 sec. to   43.644 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.963694     (     )
Epeak [keV] : 18.1091      (   )
Norm@50keV  : 3.11054E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.23 using 59 PHA bins.
# Reduced chi-squared =          1.218 for     56 degrees of freedom 
# Null hypothesis probability =   1.265387e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Band function

Time interval is from   42.644 sec. to   43.644 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]    : 5.73343  (-1.68325  2.33703)
R^2/D10^2   : 1.97958  (-1.97899   7.15514)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.83 using 59 PHA bins.
# Reduced chi-squared =          1.208 for     57 degrees of freedom 
# Null hypothesis probability =   1.354148e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.076e-09   4.782e-09
25- 50  7.283e-09   4.724e-09
50-150  5.515e-10   5.250e-10
15-150  1.591e-08   9.655e-09

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 23.9328       (-12.0831      29.934)
Norm        : 4.35618       (-2.13329     5.31217)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.25 using 59 PHA bins.
# Reduced chi-squared =          1.197 for     57 degrees of freedom 
# Null hypothesis probability =   1.461273e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.749e-09   3.886e-09
25- 50  7.719e-09   4.721e-09
50-150  3.076e-09   2.921e-09
15-150  1.855e-08   1.113e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.47134        (-4.53295      3.00936)
R1^2/D10^2  : 4.52517        (-4.34556      -4.34556)
kT2 [keV]   : 12.0715        (-12.5334      -12.5334)
R2^2/D10^2  : 3.94424E-02    (-0.0330629   6.59985)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.87 using 59 PHA bins.
# Reduced chi-squared =          1.234 for     55 degrees of freedom 
# Null hypothesis probability =   1.140380e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.101e-09   5.140e-09
25- 50  7.232e-09   4.393e-09
50-150  3.468e-09   2.325e-09
15-150  1.880e-08   1.121e-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: 2.60255     ( -0.303881   0.348751 )
Norm@50keV  : 1.20796E-03    ( -0.000315673   0.000319805 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.63 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     57 degrees of freedom 
# Null hypothesis probability =   3.463845e-01
 
Photon flux (15-150 keV)    in 15.88 sec: 0.253028 ( -0.0354579  0.0354939 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.97604e-07 ( -3.58175e-08  3.79516e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25175     ( -2.08384   0.742875 )
Epeak [keV] : 18.2653      ( -17.0004 10.4397 )
Norm@50keV  : 9.49669E-03    ( -0.00949356   0.253722 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.20 using 59 PHA bins.
# Reduced chi-squared =          1.039 for     56 degrees of freedom 
# Null hypothesis probability =   3.942713e-01
 
Photon flux (15-150 keV)    in 15.88 sec: 0.246621 ( -0.03506  0.035451 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.7696e-07 ( -3.27514e-08  4.06893e-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)  = 6.61e-08
S(50-100 keV) = 4.35e-08

T90 vs. Hardness ratio plot

T90                                   = 12.0359999537468 sec.
Hardness ratio (energy fluence ratio) = 0.658094

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.824041
Count Ratio (50-100 keV) / (15-25 keV) = 0.212473

Mask shadow pattern

IMX = 4.806145865922342E-02, IMY = 7.792598460053093E-02

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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:
-337.799400 -310.156200
-239.000000 32.872000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
145.0533   8.3375    2.7  45.2   18.1   2.1667   4.3 ------	UNKNOWN                       
190.8309  19.0228    5.1  50.7  -44.4   3.3269   2.3 ------	UNKNOWN

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

Time interval of the image:
32.872000 48.748000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 96.3441  72.6348    2.5  27.0  174.0   0.2347   4.6 ------	UNKNOWN                       
150.6470  52.3411    1.1   5.2  -58.3   0.5131  10.9 ------	UNKNOWN                       
171.0804   3.5523    2.7  55.3  -13.8   0.6445   4.3 ------	UNKNOWN                       
190.5354  73.1688    2.6  27.9 -130.3   0.2367   4.5 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
143.500600 963.057200
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
137.4926  31.7778    2.1  22.7   34.3   2.7777   5.4 ------	UNKNOWN                       
228.0095  76.2493    2.9  36.8 -152.9   3.0294   4.0 ------	UNKNOWN                       
183.6172  51.0590    3.7  20.3  -95.2   1.7358   3.1 ------	UNKNOWN                       
187.0670  11.1130    3.3  50.6  -44.6  11.4465   3.5 ------	UNKNOWN

Plot creation:
Thu Jan  5 10:40:15 EST 2017