batgrbproduct analysis for trigger=965784

batgrbproduct Analysis for Trigger=965784

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 14:21:07 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger965784
======================================================================

  Trigger: 00965784      Segment: 000

  BAT Trigger Time: 608272167.208   [s; MET]
      Trigger Stop: 608272167.272   [s; MET]
               UTC: 2020-04-11T04:29:02.456140    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 47.6594073722997   Dec: -52.3144792843281  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.06
     Image Trigger?:     NO
     Rate S/N Ratio:     34.9714169000914  [ if not an image trigger ]
     Image S/N Ratio:    10.06

  Flight Position:   [ source = BAT ]
    RA: 47.6594073722997   Dec: -52.3144792843281  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 47.6861106494885   Dec: -52.3204094709807  [deg; J2000]  
        { 03h 10m 44.7s , -52d 19' 13.5" }
         +/- 1.63427193966214 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.80757710983536 [arcmin] (formal 1-sigma fit error)
    SNR: 15.0788890519473
 
  Angular difference between Flight and Ground position is 1.042030 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 0.21999990940094 +/- 0.0447213169003838
        Measured from: -0.00399994850158691
                   to: 0.215999960899353     [s; relative to TRIGTIME]
     T50: 0.119999885559082 +/- 0.017888473448218
        Measured from: 0.0320000648498535
                   to: 0.151999950408936     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.383999943733215     
                   to: 0.616000056266785     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0199999809265137     
                   to: 0.248000025749207     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.025501   0.043716   0.048313   0.017328
           0.004274   0.004980   0.004912   0.003832 [error]
 Peak      0.026451   0.056011   0.055972   0.022742
           0.007074   0.007774   0.007162   0.006128 [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 5.95e-09 1.54e-08 3.19e-08 1.69e-07 8.60e-08 2.22e-07   erg/cm2
              Error 1.33e-09 2.12e-09 4.25e-09 4.98e-08 1.13e-08 5.23e-08   erg/cm2
Peak flux Power-law 2.25e-01 3.20e-01 3.38e-01 6.58e-01 1.09e+00 1.54e+00   ph/cm2/s
              Error 6.96e-02 6.09e-02 5.39e-02 2.28e-01 1.66e-01 2.61e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.15e-09 1.65e-08 3.43e-08 6.62e-08 8.25e-08 1.22e-07   erg/cm2
              Error 1.57e-09 2.57e-09 5.09e-09 7.73e-08 1.23e-08 7.71e-08   erg/cm2
Peak flux Cutoff-PL 2.02e-01 3.32e-01 3.57e-01 3.95e-01 1.07e+00 1.29e+00   ph/cm2/s
              Error 8.23e-02 6.85e-02 6.64e-02 2.90e-01 1.70e-01 3.50e-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    0.946    0.194    -      -           2.91e-02 3.46e-03    0.000  0
CPL   0.225    0.854     133.4  -42.7      6.42e-02 7.09e-02    0.000  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.922    0.258    -      -           9.48e-03 1.44e-03    0.000  0
CPL   0.440    0.898     178.2    0.0      1.59e-02 2.24e-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: 0.192000 sec.
T50 in the 50-300 keV band: 0.064000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.268   -0.020    0.248
T90     0.220   -0.004    0.216
T50     0.120    0.032    0.152
Peak    1.000   -0.384    0.616

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
   47.6861   -52.3204   0.0128     8.2862  -161.7669         0.1336411     15.079 TRIG_00965784                 
 
Foreground time interval of the image:
 -0.020   0.248 (delta_t =   0.268 [sec])
Background time interval of the image:
-239.208  -0.020 (delta_t = 239.188 [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 0.064000

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 0.064000

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 0.064000

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   -0.020 sec. to    0.248 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.946035     ( -0.197445   0.19115 )
Norm@50keV  : 2.91470E-02    ( -0.00346212   0.00345246 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 0.268 sec: 3.34828 ( -0.39911  0.39943 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.61518e-08 ( -1.12979e-08  1.13886e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.020 sec. to    0.248 sec.
 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.224508     ( -0.937576   0.771106 )
Epeak [keV] : 133.387      ( -47.9833 -133.387 )
Norm@50keV  : 6.41580E-02    ( -0.0357953   0.105944 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 0.268 sec: 3.28201 ( -0.40748  0.40679 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.24773e-08 ( -1.23697e-08  1.22609e-08 ) ergs/cm2

Band function

Time interval is from   -0.020 sec. to    0.248 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]    : 20.9680  (-3.04809  3.7656)
R^2/D10^2   : 0.143936  (-0.0579935   0.092265)
(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  3.206e-09   8.114e-10
25- 50  1.646e-08   3.355e-09
50-150  5.395e-08   1.168e-08
15-150  7.362e-08   1.229e-08

Thermal bremsstrahlung (OTTB)

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-25.0661      -200)
Norm        : 12.9589       (-1.62663     1.62663)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.650e-09   4.886e-09
25- 50  1.664e-08   9.246e-09
50-150  3.649e-08   2.029e-08
15-150  6.178e-08   3.451e-08

Double BB

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.75630        (-4.17402      7.37757)
R1^2/D10^2  : 0.779170        (-0.564316      2.8194)
kT2 [keV]   : 33.4338        (-28.1361      -33.7455)
R2^2/D10^2  : 2.65561E-02    (-0.0243694   0.0736514)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.174e-09   3.015e-09
25- 50  1.710e-08   9.148e-09
50-150  6.078e-08   3.223e-08
15-150  8.306e-08   4.312e-08

Peak spectrum fit

Power-law model

Time interval is from   -0.384 sec. to    0.616 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.922412     ( -0.26577   0.25026 )
Norm@50keV  : 9.48453E-03    ( -0.00144582   0.00143654 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec: 1.08893 ( -0.166205  0.16664 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.05541e-07 ( -1.70763e-08  1.72227e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.384 sec. to    0.616 sec.
 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.439555     ( -1.18905   0.607171 )
Epeak [keV] : 178.222      ( -178.243 -178.243 )
Norm@50keV  : 1.59293E-02    ( -0.00761093   0.0371696 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec: 1.07176 ( -0.170276  0.17023 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.02457e-07 ( -1.87137e-08  1.83828e-08 ) ergs/cm2

Band function

Time interval is from   -0.384 sec. to    0.616 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]    : 22.0274  (-4.15701  5.65044)
R^2/D10^2   : 3.95584E-02  (-0.0200064   0.0370614)
(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  3.550e-09   1.193e-09
25- 50  1.879e-08   5.215e-09
50-150  6.811e-08   1.930e-08
15-150  9.044e-08   2.367e-08

Thermal bremsstrahlung (OTTB)

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-35.9931      -200)
Norm        : 4.32304       (-0.687279     0.687279)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.077e-08   6.245e-09
25- 50  2.072e-08   1.167e-08
50-150  4.543e-08   2.604e-08
15-150  7.691e-08   4.379e-08

Double BB

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.2154        (-4.76069      7.12685)
R1^2/D10^2  : 0.252815        (-0.192532      1.02758)
kT2 [keV]   : 41.8265        (-20.5246      -41.8396)
R2^2/D10^2  : 4.58540E-03    (-0.00435505   0.0231038)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.321e-09   4.018e-09
25- 50  1.976e-08   1.069e-08
50-150  7.186e-08   4.093e-08
15-150  9.795e-08   5.250e-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: 0.946035     ( -0.197445   0.19115 )
Norm@50keV  : 2.91470E-02    ( -0.00346212   0.00345246 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 0.268 sec: 3.34829 ( -0.39906  0.399455 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.61438e-08 ( -1.12949e-08  1.13888e-08 ) ergs/cm2

Cutoff power-law model

 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.224510     ( -0.937576   0.771107 )
Epeak [keV] : 133.387      ( -47.9833 -133.387 )
Norm@50keV  : 6.41579E-02    ( -0.0357979   0.105944 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 0.268 sec: 3.28194 ( -0.40744  0.40676 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.25156e-08 ( -1.23765e-08  1.22899e-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)  = 1.54e-08
S(50-100 keV) = 3.19e-08

T90 vs. Hardness ratio plot

T90                                   = 0.21999990940094 sec.
Hardness ratio (energy fluence ratio) = 2.07143

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.71429
Count Ratio (50-100 keV) / (15-25 keV) = 1.89455

Mask shadow pattern

IMX = -1.383262840656953E-01, IMY = 4.556802781086370E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000

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:
-239.208000 -0.020000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
295.0602 -80.0744    3.3  46.1  139.0   4.0295   3.4 ------	UNKNOWN                       
117.0766 -31.9225    3.1  45.1   36.0   2.6362   3.7 ------	UNKNOWN                       
  6.9866 -33.3789    2.9  42.2 -139.7   2.2092   4.0 ------	UNKNOWN

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

Time interval of the image:
-0.020000 0.248000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
332.8960 -53.0800    2.3  50.9  178.4   0.1347   5.1 ------	UNKNOWN                       
 47.6862 -52.3204    0.8   8.3 -161.8   0.1337  15.1 ------	UNKNOWN                       
 11.0660 -55.6173    2.1  29.6 -172.0   0.0529   5.4 ------	UNKNOWN                       
 24.1679 -53.9784    2.2  22.4 -166.0   0.0477   5.2 ------	UNKNOWN                       
 62.1739 -39.3800    2.3  10.9  -45.5   0.0458   5.2 ------	UNKNOWN                       
 76.1963 -10.4310    1.9  41.9  -28.8   0.0897   6.1 ------	UNKNOWN                       
 18.2035 -33.3370    2.9  35.2 -129.9   0.0609   4.0 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
37.292590 962.836400
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
113.7731 -38.0331    3.6  46.9   40.3   8.6201   3.2 ------	UNKNOWN                       
 92.0787 -43.4238    3.2  30.5   31.6   4.0543   3.6 ------	UNKNOWN                       
 92.5652 -10.4442    3.5  55.3   -1.9   8.3955   3.3 ------	UNKNOWN                       
 64.1611 -30.2821    3.7  25.1  -24.3   3.0185   3.1 ------	UNKNOWN                       
359.0890 -21.8305    2.7  48.0 -129.1  15.8239   4.3 ------	UNKNOWN

Plot creation:
Mon Jun  1 00:12:54 EDT 2020