batgrbproduct analysis for trigger=956639

batgrbproduct Analysis for Trigger=956639

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 v2.47
    Process Start Time (local time): Mon May 18 14:48:08 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger956639
======================================================================

  Trigger: 00956639      Segment: 000

  BAT Trigger Time: 603470396.416   [s; MET]
      Trigger Stop: 603470397.44   [s; MET]
               UTC: 2020-02-15T14:39:31.975900    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 34.1217781187011   Dec: 12.7806238069698  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    16.49
     Image Trigger?:     NO
     Rate S/N Ratio:     37.1214223865412  [ if not an image trigger ]
     Image S/N Ratio:    16.49

  Flight Position:   [ source = BAT ]
    RA: 34.1217781187011   Dec: 12.7806238069698  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 34.0999775945519   Dec: 12.7753599537487  [deg; J2000]  
        { 02h 16m 24.0s , +12d 46' 31.3" }
         +/- 0.981626090769389 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.35363813512322 [arcmin] (formal 1-sigma fit error)
    SNR: 31.2337378847574
 
  Angular difference between Flight and Ground position is 1.314154 arcmin
 
  Partial Coding Fraction: 0.734375    [ including projection effects ]

  Duration
     T90: 11.1479998826981 +/- 2.15453477136577
        Measured from: -7.33599996566772
                   to: 3.81199991703033     [s; relative to TRIGTIME]
     T50: 3.70799994468689 +/- 0.627910734101116
        Measured from: -2.08800005912781
                   to: 1.61999988555908     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.159999966621399     
                   to: 0.840000033378601     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -9.97200000286102     
                   to: 5.36800003051758     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.406933   0.658523   0.511084   0.128731
           0.029439   0.031156   0.027983   0.023393 [error]
 Peak      0.071393   0.120292   0.112172   0.043061
           0.008417   0.009415   0.009068   0.007147 [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 1.36e-07 2.65e-07 4.00e-07 1.31e-06 1.12e-06 2.12e-06   erg/cm2
              Error 1.34e-08 1.58e-08 2.69e-08 1.93e-07 6.65e-08 2.11e-07   erg/cm2
Peak flux Power-law 7.25e-01 8.68e-01 7.51e-01 1.11e+00 2.74e+00 3.46e+00   ph/cm2/s
              Error 1.13e-01 8.27e-02 7.09e-02 2.21e-01 2.29e-01 2.98e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.27e-07 2.73e-07 4.11e-07 7.99e-07 1.10e-06 1.61e-06   erg/cm2
              Error 1.60e-08 1.84e-08 3.00e-08 4.03e-07 7.16e-08 4.04e-07   erg/cm2
Peak flux Cutoff-PL 7.02e-01 8.79e-01 7.65e-01 9.41e-01 2.72e+00 3.29e+00   ph/cm2/s
              Error 1.29e-01 6.91e-02 8.35e-02 3.15e-01 2.34e-01 4.55e-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    1.406    0.094    -      -           7.59e-03 4.11e-04    0.000  0
CPL   1.054    0.369     140.8  453.5      1.13e-02 4.69e-03    0.000  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.209    0.141    -      -           2.33e-02 1.90e-03    0.000  0
CPL   1.060    0.419     344.9    0.0      2.74e-02 1.41e-02    0.000  0
 
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: 12.672000 sec.
T50 in the 50-300 keV band: 2.496000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   15.340   -9.972    5.368
T90    11.148   -7.336    3.812
T50     3.708   -2.088    1.620
Peak    1.000   -0.160    0.840

Click here for the BAT GCN circular template

Special notes of this burst

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
   34.1000    12.7754   0.0062    34.0530  -167.7735         1.7727986     31.234 TRIG_00956639                 
 
Foreground time interval of the image:
 -9.972   5.368 (delta_t =  15.340 [sec])
Background time interval of the image:
-239.416  -9.972 (delta_t = 229.444 [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   -9.972 sec. to    5.368 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40624     ( -0.0943835   0.0942883 )
Norm@50keV  : 7.59002E-03    ( -0.000411398   0.000411183 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 15.34 sec: 0.925658 ( -0.052096  0.052182 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12374e-06 ( -6.63002e-08  6.66126e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -9.972 sec. to    5.368 sec.
 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.05405     ( -0.385783   0.352242 )
Epeak [keV] : 140.810      ( -48.2124 858.832 )
Norm@50keV  : 1.12564E-02    ( -0.00352904   0.00585461 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 15.34 sec: 0.910541 ( -0.054199  0.054242 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09839e-06 ( -7.17536e-08  7.15309e-08 ) ergs/cm2

Band function

Time interval is from   -9.972 sec. to    5.368 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

XSPEC12>exit
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 16.4166  (  )
R^2/D10^2   : 7.78687E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.616e-08   6.734e-09
25- 50  2.845e-07   2.286e-08
50-150  5.411e-07   5.108e-08
15-150  8.917e-07   5.990e-08

Thermal bremsstrahlung (OTTB)

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-18.1643      -200)
Norm        : 3.84222       (-0.207711     0.207711)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.468e-07   8.997e-09
25- 50  2.823e-07   1.910e-08
50-150  6.192e-07   4.441e-08
15-150  1.048e-06   1.468e-07

Double BB

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.12627        (-1.26057      1.37122)
R1^2/D10^2  : 0.563173        (-0.21775      0.408907)
kT2 [keV]   : 30.8718        (-5.30178      8.73741)
R2^2/D10^2  : 7.01855E-03    (-0.00391579   0.00665474)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.201e-07   2.363e-08
25- 50  2.860e-07   4.433e-08
50-150  7.067e-07   2.143e-07
15-150  1.113e-06   3.069e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.160 sec. to    0.840 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.20906     ( -0.141248   0.140062 )
Norm@50keV  : 2.32833E-02    ( -0.0018952   0.00189519 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec: 2.73654 ( -0.22919  0.22946 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.35646e-07 ( -2.12286e-08  2.13522e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.160 sec. to    0.840 sec.
 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.06037     ( -0.56581   0.272972 )
Epeak [keV] : 344.871      ( -344.871 -344.871 )
Norm@50keV  : 2.73918E-02    ( -0.00578105   0.0223757 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec: 2.72262 ( -0.23426  0.23426 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.339e-07 ( -2.23417e-08  2.20705e-08 ) ergs/cm2

Band function

Time interval is from   -0.160 sec. to    0.840 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

XSPEC12>exit
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 18.9447  (-2.02344  2.35339)
R^2/D10^2   : 0.150921  (-0.0486097   0.0689471)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.066e-08   1.724e-09
25- 50  5.116e-08   6.235e-09
50-150  1.349e-07   2.035e-08
15-150  1.967e-07   2.120e-08

Thermal bremsstrahlung (OTTB)

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-19.2889      -200)
Norm        : 11.3048       (-0.939313     0.939313)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.815e-08   2.765e-09
25- 50  5.414e-08   1.232e-08
50-150  1.187e-07   4.214e-08
15-150  2.010e-07   8.757e-08

Double BB

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.15305        (-2.02992      2.43212)
R1^2/D10^2  : 1.47729        (-0.805763      2.28269)
kT2 [keV]   : 34.2952        (-8.1413      19.0443)
R2^2/D10^2  : 1.80533E-02    (-0.0130654   0.0264684)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.105e-08   7.390e-09
25- 50  5.234e-08   1.656e-08
50-150  1.633e-07   8.236e-08
15-150  2.366e-07   8.830e-08

Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

Power-law model

XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40624     ( -0.0943835   0.0942883 )
Norm@50keV  : 7.59002E-03    ( -0.000411398   0.000411183 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 15.34 sec: 0.925641 ( -0.052093  0.0521788 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12361e-06 ( -6.63516e-08  6.66003e-08 ) ergs/cm2

Cutoff power-law model

 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.05405     ( -0.385783   0.352242 )
Epeak [keV] : 140.810      ( -48.2125 858.824 )
Norm@50keV  : 1.12564E-02    ( -0.00352904   0.00585462 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 15.34 sec: 0.910452 ( -0.054184  0.054226 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09884e-06 ( -7.19952e-08  7.15657e-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)  = 2.65e-07
S(50-100 keV) = 4.00e-07

T90 vs. Hardness ratio plot

T90                                   = 11.1479998826981 sec.
Hardness ratio (energy fluence ratio) = 1.50943

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.61826
Count Ratio (50-100 keV) / (15-25 keV) = 1.25594

Mask shadow pattern

IMX = -6.605268263684679E-01, IMY = 1.431301994029492E-01

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:
-239.416000 -9.972000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
308.1098  40.9493   37.5  49.9  -25.9   0.1649   0.3    0.2	Cyg X-3                       
326.3518  38.3573   48.7  38.4  -38.1   0.0868   0.2    8.7	Cyg X-2                       
 12.7250  70.7380    2.3  27.1   38.2   1.2780   4.9 ------	UNKNOWN                       
 18.1793  48.0430    3.1   4.3   46.3   0.7086   3.8 ------	UNKNOWN                       
299.2486  45.5885    2.2  53.4  -16.8   3.0479   5.4 ------	UNKNOWN                       
323.9651  25.2605    2.7  47.0  -53.1   3.9126   4.2 ------	UNKNOWN

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

Time interval of the image:
-9.972000 5.368000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
307.9966  40.9909    6.9  50.0  -25.8  -0.2030  -1.7    5.6	Cyg X-3                       
326.1800  38.3187  271.2  38.6  -38.1  -0.0033  -0.0    0.4	Cyg X-2                       
223.7010  86.2140    3.3  49.7   39.6   0.8486   3.5 ------	UNKNOWN                       
 34.1000  12.7754    0.4  34.1 -167.8   1.7727  31.2 ------	UNKNOWN                       
 38.9565  -7.2518    2.4  54.5 -164.5   0.9037   4.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
71.284600 962.695400
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 47.2085 -19.9463    2.9  35.2  177.4   3.8227   4.0 ------	UNKNOWN                       
 29.2327 -19.5667    3.7  32.7 -152.4   2.7484   3.2 ------	UNKNOWN                       
 22.1264 -24.0181    3.1  38.6 -143.2   4.4932   3.7 ------	UNKNOWN                       
  7.8177 -27.8986    2.5  48.0 -129.1  13.8982   4.7 ------	UNKNOWN                       
  9.5078 -30.9406    2.4  49.7 -133.0  18.3590   4.8 ------	UNKNOWN

Plot creation:
Mon Jun  1 00:30:53 EDT 2020