batgrbproduct analysis for trigger=948219

batgrbproduct Analysis for Trigger=948219

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 15:07:56 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger948219
======================================================================

  Trigger: 00948219      Segment: 000

  BAT Trigger Time: 600118012.928   [s; MET]
      Trigger Stop: 600118017.024   [s; MET]
               UTC: 2020-01-07T19:26:28.705120    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 107.065612914004   Dec: -83.7157659956246  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.77
     Image Trigger?:     NO
     Rate S/N Ratio:     11.2694276695846  [ if not an image trigger ]
     Image S/N Ratio:    9.77

  Flight Position:   [ source = BAT ]
    RA: 107.065612914004   Dec: -83.7157659956246  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 107.05875321311   Dec: -83.7149580023457  [deg; J2000]  
        { 07h 08m 14.1s , -83d 42' 53.8" }
         +/- 1.16872807944568 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.425311638302923 [arcmin] (formal 1-sigma fit error)
    SNR: 24.3436020249427
 
  Angular difference between Flight and Ground position is 0.066183 arcmin
 
  Partial Coding Fraction: 0.78125    [ including projection effects ]

  Duration
     T90: 86.675999879837 +/- 11.6602347772905
        Measured from: -21.8399999141693
                   to: 64.8359999656677     [s; relative to TRIGTIME]
     T50: 35.0520000457764 +/- 1.78381155821153
        Measured from: 1.07599997520447
                   to: 36.1280000209808     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 36.0920000076294     
                   to: 37.0920000076294     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -29.8559999465942     
                   to: 77.0360000133514     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.206544   1.684729   1.380532   0.432174
           0.087020   0.087964   0.077555   0.070835 [error]
 Peak      0.061540   0.083125   0.064409   0.003533
           0.009338   0.009930   0.008724   0.007619 [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 3.61e-07 7.08e-07 1.07e-06 3.55e-06 3.01e-06 5.69e-06   erg/cm2
              Error 3.91e-08 4.46e-08 7.65e-08 5.72e-07 1.87e-07 6.18e-07   erg/cm2
Peak flux Power-law 6.55e-01 6.19e-01 4.07e-01 4.16e-01 1.85e+00 2.10e+00   ph/cm2/s
              Error 1.37e-01 8.13e-02 7.21e-02 1.48e-01 2.38e-01 2.73e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.61e-07 7.03e-07 1.07e-06 3.53e-06 3.03e-06 5.84e-06   erg/cm2
              Error -------- 5.54e-08 1.04e-07 -------- 2.36e-07 8.25e-07   erg/cm2
Peak flux Cutoff-PL 6.20e-01 6.42e-01 4.17e-01 2.74e-01 1.83e+00 1.95e+00   ph/cm2/s
              Error 1.60e-01 9.86e-02 7.83e-02 1.80e-01 2.47e-01 3.38e-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    1.398    0.104    -      -           2.91e-03 1.65e-04    0.000  0
CPL   1.399    0.210    9999.2    0.0      2.92e-03 6.73e-04    0.000  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.604    0.227    -      -           1.44e-02 1.97e-03    0.000  0
CPL   1.258    0.772     103.5  -12.6      2.18e-02 0.00e+00    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: 59.456000 sec.
T50 in the 50-300 keV band: 31.616000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  106.892  -29.856   77.036
T90    86.676  -21.840   64.836
T50    35.052    1.076   36.128
Peak    1.000   36.092   37.092

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
  107.0588   -83.7150   0.0079    30.0595     8.3312         4.6590076     24.344 TRIG_00948219                 
 
Foreground time interval of the image:
-29.856  77.036 (delta_t = 106.892 [sec])
Background time interval of the image:
-239.928 -29.856 (delta_t = 210.072 [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 4.096000

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 4.096000

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 4.096000

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  -29.856 sec. to   77.036 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39765     ( -0.10466   0.10419 )
Norm@50keV  : 2.91490E-03    ( -0.000164952   0.000164805 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 106.9 sec: 0.354798 ( -0.021009  0.021071 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.01271e-06 ( -1.86934e-07  1.87938e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -29.856 sec. to   77.036 sec.
 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39881     ( -0.31699   0.10226 )
Epeak [keV] : 9999.20      ( -9999.36 -9999.36 )
Norm@50keV  : 2.92220E-03    ( -0.000163647   0.00118154 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 106.9 sec: 0.355960 ( -0.026543  0.023728 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.02571e-06 ( -2.52978e-07  2.19464e-07 ) ergs/cm2

Band function

Time interval is from  -29.856 sec. to   77.036 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]    : 16.6674  (  )
R^2/D10^2   : 2.75980E-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  1.678e-07   1.946e-08
25- 50  7.307e-07   5.655e-08
50-150  1.440e-06   1.668e-07
15-150  2.338e-06   1.753e-07

Thermal bremsstrahlung (OTTB)

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-18.9669      -200)
Norm        : 1.46871       (-0.0831688     0.0831688)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.911e-07   2.523e-08
25- 50  7.522e-07   5.436e-08
50-150  1.650e-06   2.785e-07
15-150  2.793e-06   3.918e-07

Double BB

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.51551        (-1.43502      1.68553)
R1^2/D10^2  : 0.293759        (-0.140607      0.317735)
kT2 [keV]   : 32.9884        (-6.93621      14.7411)
R2^2/D10^2  : 2.31284E-03    (-0.00153983   0.00279742)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.446e-07   7.381e-08
25- 50  7.312e-07   1.205e-07
50-150  1.969e-06   6.083e-07
15-150  3.045e-06   6.793e-07

Peak spectrum fit

Power-law model

Time interval is from   36.092 sec. to   37.092 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.60448     ( -0.22416   0.230464 )
Norm@50keV  : 1.43878E-02    ( -0.00198555   0.00195411 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec: 1.85153 ( -0.23774  0.23795 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.34502e-07 ( -1.98452e-08  2.01623e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   36.092 sec. to   37.092 sec.
 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25820     ( -0.989986   0.553619 )
Epeak [keV] : 103.541      ( -78.4294 -103.541 )
Norm@50keV  : 2.18146E-02    (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec: 1.82513 ( -0.24717  0.24608 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.30834e-07 ( -2.0477e-08  2.19156e-08 ) ergs/cm2

Band function

Time interval is from   36.092 sec. to   37.092 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]    : 13.6727  (-2.0747  2.55404)
R^2/D10^2   : 0.285401  (-0.130617   0.229624)
(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  1.129e-08   2.890e-09
25- 50  4.101e-08   7.845e-09
50-150  4.986e-08   1.344e-08
15-150  1.022e-07   1.902e-08

Thermal bremsstrahlung (OTTB)

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 169.514       (-75.7748      -169.514)
Norm        : 7.59500       (-1.01898     1.22502)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.928e-08   1.062e-08
25- 50  3.635e-08   1.934e-08
50-150  7.529e-08   4.238e-08
15-150  1.309e-07   7.290e-08

Double BB

XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.30354        (-2.74222      4.19401)
R1^2/D10^2  : 4.99634        (-4.14466      16.9829)
kT2 [keV]   : 20.6973        (-5.78191      18.4098)
R2^2/D10^2  : 5.46304E-02    (-0.0482409   0.132196)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.974e-08   1.060e-08
25- 50  3.418e-08   1.612e-08
50-150  7.287e-08   4.100e-08
15-150  1.268e-07   5.435e-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: 1.39765     ( -0.10466   0.10419 )
Norm@50keV  : 2.91490E-03    ( -0.000164952   0.000164805 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 106.9 sec: 0.354792 ( -0.0210069  0.0210699 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.01236e-06 ( -1.8704e-07  1.87908e-07 ) ergs/cm2

Cutoff power-law model

 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39774     ( -0.188384   0.102857 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 2.91497E-03    ( -0.000165263   0.00117984 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 106.9 sec: 0.354907 ( -0.021209  0.020556 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.01205e-06 ( -9.56434e-08  1.86337e-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)  = 7.08e-07
S(50-100 keV) = 1.07e-06

T90 vs. Hardness ratio plot

T90                                   = 86.675999879837 sec.
Hardness ratio (energy fluence ratio) = 1.5113

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.39633
Count Ratio (50-100 keV) / (15-25 keV) = 1.1442

Mask shadow pattern

IMX = 5.726285106819353E-01, IMY = -8.385580134223859E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

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:
-239.928000 -29.856000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.2424 -60.5908    7.0  22.0   70.5   0.5297   1.6    2.9	Cen X-3                       
186.4844 -62.8323    2.9  14.0   72.0   1.1807   4.0    6.0	GX 301-2                      
244.9525 -15.6402    1.5  50.8 -148.5   5.9657   7.9    1.6	Sco X-1                       
255.9875 -37.8466   43.9  34.0 -122.0  -0.1128  -0.3    0.2	4U 1700-377                   
256.4352 -36.4230    7.3  35.4 -122.7   0.7148   1.6    0.0	GX 349+2                      
264.6395 -44.4043    6.1  32.4 -105.3   0.8171   1.9    5.2	4U 1735-44                    
262.9231 -33.9970    0.0  40.2 -117.2   1.0516   1.7   10.3	GX 354-0                      
156.8925 -51.5600    2.7  33.3   77.3   2.6167   4.2 ------	UNKNOWN                       
122.0388 -70.6510    2.9  34.5   32.1   1.5668   4.0 ------	UNKNOWN                       
210.9738 -12.4918    2.7  50.4  168.3   3.9997   4.3 ------	UNKNOWN                       
214.9893  -6.1959    2.9  56.5  173.6   5.4318   4.0 ------	UNKNOWN

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

Time interval of the image:
-29.856000 77.036000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.1899 -60.4732   15.3  22.1   70.7   0.1545   0.8    9.7	Cen X-3                       
186.3895 -62.7549    7.6  14.1   72.3  -0.2762  -1.5    7.4	GX 301-2                      
244.9197 -15.6005   16.4  50.9 -148.5   0.3987   0.7    4.2	Sco X-1                       
255.7649 -37.8337   18.3  34.0 -122.3  -0.1746  -0.6   10.5	4U 1700-377                   
256.1794 -36.3642    0.0  35.4 -123.1   0.4491   1.5   12.9	GX 349+2                      
264.7835 -44.3248    3.9  32.5 -105.3  -0.8955  -3.0    7.7	4U 1735-44                    
262.8007 -33.7732    7.3  40.4 -117.5   0.7384   1.6   10.1	GX 354-0                      
148.0985 -47.7055    2.1  40.0   75.0   3.8187   5.4 ------	UNKNOWN                       
186.7191 -19.1717    2.7  48.4  136.3   3.7431   4.3 ------	UNKNOWN                       
214.2090 -12.7205    2.3  50.0  172.4   2.4793   5.1 ------	UNKNOWN                       
107.0587 -83.7150    0.5  30.1    8.3   4.6590  24.3 ------	UNKNOWN                       
350.7652 -79.4813    2.0  35.3  -16.8   1.2912   5.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
882.672600 962.122000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.1970 -60.7604    5.2  27.0  163.0   0.3350   2.2    9.0	Cen X-3                       
186.6007 -62.9184    5.3  26.6 -179.2   0.3263   2.1    9.0	GX 301-2                      
 50.6785 -42.7825    2.5  44.0   27.3   1.3659   4.6 ------	UNKNOWN                       
211.3339 -40.2796    2.3  51.5 -161.9   1.7815   5.0 ------	UNKNOWN                       
359.5700 -42.2157    2.3  49.9  -23.7   1.5368   4.9 ------	UNKNOWN                       
312.0514 -58.3062    2.5  37.4  -69.7   1.3531   4.6 ------	UNKNOWN

Plot creation:
Mon Jun  1 00:43:16 EDT 2020