batgrbproduct analysis for trigger=953689

batgrbproduct Analysis for Trigger=953689

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): Tue Jun  2 00:12:58 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger953689
======================================================================

  Trigger: 00953689      Segment: 000

  BAT Trigger Time: 602203300.352   [s; MET]
      Trigger Stop: 602203301.376   [s; MET]
               UTC: 2020-01-31T22:41:15.994140    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 3.09544610319421   Dec: 51.123636218354  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    25.71
     Image Trigger?:     NO
     Rate S/N Ratio:     255.998046867549  [ if not an image trigger ]
     Image S/N Ratio:    25.71

  Flight Position:   [ source = BAT ]
    RA: 3.09544610319421   Dec: 51.123636218354  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 3.08896096317396   Dec: 51.1248790912871  [deg; J2000]  
        { 00h 12m 21.4s , +51d 07' 29.6" }
         +/- 0.471353036202913 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.137591063685911 [arcmin] (formal 1-sigma fit error)
    SNR: 89.077190335919
 
  Angular difference between Flight and Ground position is 0.255349 arcmin
 
  Partial Coding Fraction: 0.9609375    [ including projection effects ]

  Duration
     T90: 32.7399998903275 +/- 0.879054111945978
        Measured from: -1.96399998664856
                   to: 30.7759999036789     [s; relative to TRIGTIME]
     T50: 1.7279999256134 +/- 0.0509117071272196
        Measured from: -0.547999978065491
                   to: 1.17999994754791     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0160000324249268     
                   to: 1.01600003242493     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -3.45200002193451     
                   to: 46.555999994278     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.440416   3.793163   3.287559   0.869917
           0.047341   0.051926   0.047015   0.036720 [error]
 Peak      0.619115   1.194116   1.211314   0.341292
           0.013797   0.018504   0.019321   0.012540 [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 7.60e-07 1.56e-06 2.51e-06 9.05e-06 6.95e-06 1.39e-05   erg/cm2
              Error 3.14e-08 3.73e-08 5.20e-08 4.48e-07 1.32e-07 4.65e-07   erg/cm2
Peak flux Power-law 1.82e-03 2.17e-02 3.43e-01 2.98e+01 1.55e+00 3.00e+01   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
Fluence   Cutoff-PL 7.30e-07 1.57e-06 2.55e-06 7.60e-06 6.90e-06 1.25e-05   erg/cm2
              Error 4.28e-08 3.84e-08 6.31e-08 1.29e-06 1.41e-07 1.16e-06   erg/cm2
Peak flux Cutoff-PL 5.56e+00 8.38e+00 8.28e+00 8.80e+00 2.63e+01 3.10e+01   ph/cm2/s
              Error 3.60e-01 2.26e-01 2.22e-01 1.07e+00 5.94e-01 1.25e+00   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    1.315    0.035    -      -           1.41e-02 2.66e-04    0.000  0
CPL   1.174    0.108     348.7 3634.0      1.62e-02 2.14e-03    0.000  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.082    0.035    -      -           2.32e-01 4.71e-03    0.000  0
CPL   0.616    0.153     179.6   42.6      3.64e-01 5.28e-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: 3.200000 sec.
T50 in the 50-300 keV band: 1.536000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   50.008   -3.452   46.556
T90    32.740   -1.964   30.776
T50     1.728   -0.548    1.180
Peak    1.000    0.016    1.016

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Special notes of this burst

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
    3.0890    51.1249   0.0021    23.1579   -16.4227         9.8400643     89.077 TRIG_00953689                 
 
Foreground time interval of the image:
 -3.452  13.549 (delta_t =  17.001 [sec])
Background time interval of the image:
-239.352  -3.452 (delta_t = 235.900 [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   -3.452 sec. to   46.556 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31477     ( -0.0355306   0.0354386 )
Norm@50keV  : 1.41323E-02    ( -0.000266309   0.000266095 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 50.01 sec: 1.69071 ( -0.03592  0.03604 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.95994e-06 ( -1.32046e-07  1.32354e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -3.452 sec. to   46.556 sec.
 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.17354     ( -0.145021   0.0718057 )
Epeak [keV] : 348.736      ( -145.146 7122.89 )
Norm@50keV  : 1.62116E-02    ( -0.00189892   0.00238784 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 50.01 sec: 1.67206 ( -0.03999  0.04019 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.90998e-06 ( -1.41413e-07  1.41118e-07 ) ergs/cm2

Band function

Time interval is from   -3.452 sec. to   46.556 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]    : 19.9976  (  )
R^2/D10^2   : 7.30296E-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  2.816e-07   1.155e-08
25- 50  1.402e-06   4.026e-08
50-150  4.158e-06   1.190e-07
15-150  5.842e-06   1.225e-07

Thermal bremsstrahlung (OTTB)

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 7.25241       (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.031e-07   1.925e-08
25- 50  1.737e-06   3.951e-08
50-150  3.810e-06   7.852e-08
15-150  6.451e-06   1.375e-07

Double BB

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.32032        (-0.64657      0.693179)
R1^2/D10^2  : 0.840730        (-0.19084      0.262508)
kT2 [keV]   : 32.5120        (-2.29438      2.88848)
R2^2/D10^2  : 1.20315E-02    (-0.00300138   0.00346623)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.356e-07   4.251e-08
25- 50  1.615e-06   6.101e-08
50-150  4.640e-06   1.785e-07
15-150  6.890e-06   2.501e-07

Peak spectrum fit

Power-law model

Time interval is from    0.016 sec. to    1.016 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08205     ( -0.0352274   0.0351305 )
Norm@50keV  : 0.231958    ( -0.00471093   0.00470681 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec: 1.55392 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.4395e-06 ( -5.13588e-08  5.13639e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.016 sec. to    1.016 sec.
 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.616037     ( -0.155306   0.150435 )
Epeak [keV] : 179.646      ( -29.9509 55.2923 )
Norm@50keV  : 0.364429    ( -0.0482875   0.0573725 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec: 26.2606 ( -0.5932  0.5946 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.40392e-06 ( -5.34755e-08  5.33903e-08 ) ergs/cm2

Band function

Time interval is from    0.016 sec. to    1.016 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]    : 21.9606  (  )
R^2/D10^2   : 0.959300  (   )
(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  8.569e-08   3.405e-09
25- 50  4.526e-07   1.375e-08
50-150  1.631e-06   5.150e-08
15-150  2.169e-06   5.200e-08

Thermal bremsstrahlung (OTTB)

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 113.468       (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.825e-07   6.350e-09
25- 50  5.435e-07   1.145e-08
50-150  1.192e-06   2.550e-08
15-150  2.018e-06   4.250e-08

Double BB

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.84307        (-0.979864      1.05151)
R1^2/D10^2  : 6.39482        (-1.49642      2.16832)
kT2 [keV]   : 35.1741        (-3.02027      4.14678)
R2^2/D10^2  : 0.173286    (-0.0539122   0.0629841)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.557e-07   1.255e-08
25- 50  5.032e-07   2.555e-08
50-150  1.752e-06   9.650e-08
15-150  2.411e-06   1.195e-07

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: 1.28887     ( -0.0306497   0.0305688 )
Norm@50keV  : 3.88722E-02    ( -0.000651578   0.000650868 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 17 sec: 4.62818 ( -0.0874967  0.0877475 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.54808e-06 ( -1.08049e-07  1.08081e-07 ) ergs/cm2

Cutoff power-law model

 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07383     ( -0.128169   0.124832 )
Epeak [keV] : 263.635      ( -74.8649 261.311 )
Norm@50keV  : 4.76519E-02    ( -0.00519811   0.0059777 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 17 sec: 4.55157 ( -0.09646  0.09698 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.49359e-06 ( -1.1373e-07  1.1339e-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)  = 1.56e-06
S(50-100 keV) = 2.51e-06

T90 vs. Hardness ratio plot

T90                                   = 32.7399998903275 sec.
Hardness ratio (energy fluence ratio) = 1.60897

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.55431
Count Ratio (50-100 keV) / (15-25 keV) = 1.34713

Mask shadow pattern

IMX = 4.102801948967180E-01, IMY = 1.209286996380831E-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:
-239.352000 -3.452000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.1198  38.4952   21.6  48.7  -40.2   0.3498   0.5   10.7	Cyg X-2                       
349.5442  68.5676    3.3  38.2    5.7   0.8973   3.5 ------	UNKNOWN                       
302.6055  66.0729    3.5  55.2   -1.8   2.1549   3.3 ------	UNKNOWN                       
 49.5291 -15.3176    3.3  55.8 -176.5   2.8272   3.5 ------	UNKNOWN                       
 40.4257 -12.4290    3.3  50.6 -166.8   1.7083   3.5 ------	UNKNOWN                       
326.8378  52.0468    3.1  45.2  -22.2   1.2402   3.7 ------	UNKNOWN                       
  1.7439  25.0999    3.4  26.0  -81.6   0.9043   3.4 ------	UNKNOWN                       
339.9262  36.3834    2.6  38.9  -47.9   1.5484   4.5 ------	UNKNOWN                       
 22.0217 -16.1559    2.7  53.5 -144.0   4.7608   4.3 ------	UNKNOWN

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

Time interval of the image:
-3.452000 13.548610
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.2395  38.1975    5.6  48.7  -40.6  -0.6550  -2.0    8.1	Cyg X-2                       
  3.0890  51.1249    0.1  23.2  -16.4   9.8400  89.1 ------	UNKNOWN                       
  6.3532  30.2837    3.2  19.9  -75.3   0.4504   3.6 ------	UNKNOWN                       
301.3977  55.0610    3.6  59.2  -14.1   2.2017   3.2 ------	UNKNOWN                       
311.9636  51.8132    2.2  54.3  -20.2   1.8197   5.1 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
57.948590 406.748600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.6848  35.0756    6.8  47.4  -40.9   1.9510   1.7    8.9	Cyg X-1                       
308.1558  40.8593    8.7  38.6  -40.1  -0.6934  -1.3    6.0	Cyg X-3                       
326.0376  38.4463   24.6  28.8  -58.3   0.2042   0.5    9.8	Cyg X-2                       
301.3538  68.5686    2.8  33.6    7.6   1.6583   4.2 ------	UNKNOWN                       
263.8814  53.9743    3.3  55.2   -1.8   3.7515   3.5 ------	UNKNOWN                       
 27.7030  13.2122    2.4  42.8 -173.4   2.3519   4.8 ------	UNKNOWN                       
 20.1234  -3.3561    3.0  56.4 -157.3   6.6594   3.9 ------	UNKNOWN                       
357.8255   3.2176    3.3  48.1 -129.7   5.4205   3.7  233.0	UNKNOWN                       
357.3317   3.3944    2.2  48.0 -129.0   7.8674   5.4  259.0	UNKNOWN                       
357.5091   3.1030    3.7  48.3 -129.3   5.8186   4.0  238.7	UNKNOWN

Plot creation:
Tue Jun  2 00:37:37 EDT 2020