batgrbproduct analysis for trigger=932058

batgrbproduct Analysis for Trigger=932058

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 Nov 27 12:05:21 EST 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger932058
======================================================================

  Trigger: 00932058      Segment: 000

  BAT Trigger Time: 594040544   [s; MET]
      Trigger Stop: 594040608   [s; MET]
               UTC: 2019-10-29T11:15:20.169860    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 352.139953073243   Dec: -40.4638223155307  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.55
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    9.55

  Flight Position:   [ source = BAT ]
    RA: 352.139953073243   Dec: -40.4638223155307  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 352.205160689833   Dec: -40.4262989253924  [deg; J2000]  
        { 23h 28m 49.2s , -40d 25' 34.7" }
         +/- 3.91663171781931 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.19676018979847 [arcmin] (formal 1-sigma fit error)
    SNR: 4.32613616600902
 
  Angular difference between Flight and Ground position is 3.732863 arcmin
 
  Partial Coding Fraction: 0.4609375    [ including projection effects ]

  Duration
     T90: 41 +/- 8.24621125123532
        Measured from: -3
                   to: 38     [s; relative to TRIGTIME]
     T50: 14 +/- 13.1529464379659
        Measured from: 2
                   to: 16     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2     
                   to: 3     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4     
                   to: 42     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.552913   0.752235   0.458679   0.041561
           0.065408   0.068608   0.061647   0.057073 [error]
 Peak      0.013715   0.077837   0.020528   0.008309
           0.010319   0.010660   0.009566   0.008677 [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 2.02e-07 3.12e-07 3.62e-07 8.05e-07 1.11e-06 1.68e-06   erg/cm2
              Error 3.29e-08 3.33e-08 6.11e-08 2.77e-07 1.42e-07 3.37e-07   erg/cm2
Peak flux Power-law 3.75e-01 3.48e-01 2.24e-01 2.22e-01 1.04e+00 1.17e+00   ph/cm2/s
              Error 1.37e-01 8.83e-02 7.36e-02 1.39e-01 2.61e-01 2.96e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.90e-07 3.31e-07 3.64e-07 3.56e-07 1.06e-06 1.24e-06   erg/cm2
              Error 3.81e-08 4.31e-08 6.62e-08 3.87e-07 1.59e-07 4.36e-07   erg/cm2
Peak flux Cutoff-PL 1.68e-01 6.15e-01 6.79e-02 9.08e-06 8.51e-01 8.51e-01   ph/cm2/s
              Error 1.19e-01 1.45e-01 7.85e-02 2.20e-03 2.24e-01 2.24e-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    1.788    0.197    -      -           2.63e-03 3.24e-04   51.030 57
CPL   1.266    0.886      64.0    0.0      5.05e-03 0.00e+00   49.730 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.637    0.389    -      -           7.99e-03 2.13e-03   74.840 57
CPL  -8.673   -1.120      37.4    5.1      1.47e+04 5.73e+04   64.100 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: 7.872000 sec.
T50 in the 50-300 keV band: 4.864000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   46.000   -4.000   42.000
T90    41.000   -3.000   38.000
T50    14.000    2.000   16.000
Peak    1.000    2.000    3.000

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
  352.2052   -40.4263   0.0445    33.5627    38.6030         1.2661547      4.326 TRIG_00932058                 
 
Foreground time interval of the image:
 -4.000  42.000 (delta_t =  46.000 [sec])
Background time interval of the image:
-15.499  -4.000 (delta_t =  11.499 [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 64.000000

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 64.000000

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 64.000000

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   -4.000 sec. to   42.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.78766     ( -0.19276   0.201218 )
Norm@50keV  : 2.62858E-03    ( -0.000327657   0.000321033 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.03 using 59 PHA bins.
# Reduced chi-squared =         0.8953 for     57 degrees of freedom 
# Null hypothesis probability =   6.973786e-01
 
Photon flux (15-150 keV)    in 46 sec: 0.360513 ( -0.038719  0.038741 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.11385e-06 ( -1.40618e-07  1.43067e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -4.000 sec. to   42.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26613     ( -0.926784   0.844716 )
Epeak [keV] : 64.0214      (   )
Norm@50keV  : 5.04871E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.73 using 59 PHA bins.
# Reduced chi-squared =         0.8880 for     56 degrees of freedom 
# Null hypothesis probability =   7.098202e-01
 
Photon flux (15-150 keV)    in 46 sec: 0.352452 ( -0.04063  0.040477 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.0626e-06 ( -1.56325e-07  1.61028e-07 ) ergs/cm2

Band function

Time interval is from   -4.000 sec. to   42.000 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]    : 11.8600  (-1.47087  1.7026)
R^2/D10^2   : 9.04336E-02  (-0.0352956   0.0569413)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.88 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     57 degrees of freedom 
# Null hypothesis probability =   1.965623e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.236e-07   2.491e-08
25- 50  3.837e-07   5.042e-08
50-150  3.220e-07   8.050e-08
15-150  8.293e-07   1.201e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 106.566       (-36.3939      66.9013)
Norm        : 1.55758       (-0.209594     0.280336)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.79 using 59 PHA bins.
# Reduced chi-squared =         0.8736 for     57 degrees of freedom 
# Null hypothesis probability =   7.397435e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.872e-07   2.772e-08
25- 50  3.278e-07   5.430e-08
50-150  5.502e-07   2.504e-07
15-150  1.065e-06   2.967e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.58450        (-3.89389      3.33458)
R1^2/D10^2  : 0.840461        (-0.610409      585.382)
kT2 [keV]   : 18.4393        (-6.25115      16.0957)
R2^2/D10^2  : 1.38742E-02    (-0.012023   0.0637062)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.43 using 59 PHA bins.
# Reduced chi-squared =         0.9352 for     55 degrees of freedom 
# Null hypothesis probability =   6.116361e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.865e-07   1.026e-07
25- 50  3.248e-07   1.578e-07
50-150  5.120e-07   2.850e-07
15-150  1.023e-06   5.423e-07

Peak spectrum fit

Power-law model

Time interval is from    2.000 sec. to    3.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.63692     ( -0.381328   0.39632 )
Norm@50keV  : 7.99183E-03    ( -0.00214923   0.00211865 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.84 using 59 PHA bins.
# Reduced chi-squared =          1.313 for     57 degrees of freedom 
# Null hypothesis probability =   5.660256e-02
 
Photon flux (15-150 keV)    in 1 sec: 1.03904 ( -0.2603  0.26077 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.44629e-08 ( -2.07003e-08  2.13977e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    2.000 sec. to    3.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -8.67301     ( 8.72244   6.48251 )
Epeak [keV] : 37.3595      ( -3.82489 6.42644 )
Norm@50keV  : 1.47215E+04    ( -17526.7   97120.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.10 using 59 PHA bins.
# Reduced chi-squared =          1.145 for     56 degrees of freedom 
# Null hypothesis probability =   2.137983e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.850775 ( -0.19772  0.250265 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.66477e-08 ( -1.09056e-08  1.46099e-08 ) ergs/cm2

Band function

Time interval is from    2.000 sec. to    3.000 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]    : 10.8524  (-1.98501  2.69621)
R^2/D10^2   : 0.412921  (-0.236789   0.4665)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.68 using 59 PHA bins.
# Reduced chi-squared =          1.187 for     57 degrees of freedom 
# Null hypothesis probability =   1.573051e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.013e-08   4.953e-09
25- 50  2.815e-08   1.270e-08
50-150  1.854e-08   1.133e-08
15-150  5.682e-08   2.177e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.7587       (-48.3302      -99.8316)
Norm        : 4.73687       (-1.40434     1.65442)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.20 using 59 PHA bins.
# Reduced chi-squared =          1.284 for     57 degrees of freedom 
# Null hypothesis probability =   7.291886e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.238e-08   7.315e-09
25- 50  2.140e-08   1.261e-08
50-150  3.463e-08   2.737e-08
15-150  6.841e-08   4.275e-08

Double BB

------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 87.3033        (-93.0126      -93.0126)
R1^2/D10^2  : 1.78173E-04        (-0.000176557      0.768177)
kT2 [keV]   : 10.1836        (-10.1956      2.79704)
R2^2/D10^2  : 0.492150    (-0.288995   0.521026)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.68 using 59 PHA bins.
#Fit statistic : Chi-Squared =          66.80 using 59 PHA bins.
# Reduced chi-squared =          1.231 for     55 degrees of freedom 
# Reduced chi-squared =          1.214 for     55 degrees of freedom 
# Null hypothesis probability =   1.171166e-01
# Null hypothesis probability =   1.322879e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

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: 1.78766     ( -0.19276   0.201218 )
Norm@50keV  : 2.62858E-03    ( -0.000327657   0.000321033 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.03 using 59 PHA bins.
# Reduced chi-squared =         0.8953 for     57 degrees of freedom 
# Null hypothesis probability =   6.973786e-01
 
Photon flux (15-150 keV)    in 46 sec: 0.360495 ( -0.0387162  0.0387381 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.11367e-06 ( -1.40566e-07  1.4309e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26614     ( -0.926794   0.844706 )
Epeak [keV] : 64.0217      (   )
Norm@50keV  : 5.04865E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.73 using 59 PHA bins.
# Reduced chi-squared =         0.8880 for     56 degrees of freedom 
# Null hypothesis probability =   7.098202e-01
 
Photon flux (15-150 keV)    in 46 sec: 0.352393 ( -0.040616  0.040461 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.06292e-06 ( -1.56506e-07  1.61198e-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)  = 3.12e-07
S(50-100 keV) = 3.62e-07

T90 vs. Hardness ratio plot

T90                                   = 41 sec.
Hardness ratio (energy fluence ratio) = 1.16026

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.36049
Count Ratio (50-100 keV) / (15-25 keV) = 0.829568

Mask shadow pattern

IMX = 5.184863409307890E-01, IMY = -4.139467303931342E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

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:
-15.499410 -4.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.2399 -60.4998    6.9  46.1 -128.6   0.2850   1.7    7.7	Cen X-3

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

Time interval of the image:
-4.000000 42.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.2812 -60.4869    6.6  46.1 -128.6  -1.2884  -1.8    8.2	Cen X-3                       
333.6920 -31.0143    2.4  46.1   18.8   1.9977   4.7 ------	UNKNOWN                       
128.2038 -46.2766    2.4  53.3 -164.6   2.7420   4.8 ------	UNKNOWN                       
227.6147 -66.0512    2.4  39.3  -92.0   3.5974   4.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
73.500580 151.900590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.5863 -60.6605    5.6  46.5 -127.2   1.0473   2.1    8.3	Cen X-3                       
 35.4165 -33.0748    3.2  40.9   97.9   1.8266   3.6 ------	UNKNOWN                       
337.9069 -38.3095    2.3  37.7   21.4   0.9913   5.0 ------	UNKNOWN                       
314.8872 -30.2040    2.1  51.3   -0.9   1.4741   5.4 ------	UNKNOWN                       
289.6486 -38.9508    2.3  50.8  -29.9   2.1061   5.1 ------	UNKNOWN

Plot creation:
Wed Nov 27 16:23:31 EST 2019