batgrbproduct analysis for trigger=1064421

batgrbproduct Analysis for Trigger=1064421

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 v2.48
    Process Start Time (local time): Fri Jul 29 22:31:29 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1064421
======================================================================

  Trigger: 01064421      Segment: 000

  BAT Trigger Time: 650069856   [s; MET]
      Trigger Stop: 650069944   [s; MET]
               UTC: 2021-08-07T22:57:08.490960    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 143.55062714072   Dec: -51.4089533078798  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    19.28
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    19.28

  Flight Position:   [ source = BAT ]
    RA: 143.55062714072   Dec: -51.4089533078798  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 143.540327543634   Dec: -51.4091193162504  [deg; J2000]  
        { 09h 34m 09.7s , -51d 24' 32.8" }
         +/- 1.00344536502634 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.415408455740732 [arcmin] (formal 1-sigma fit error)
    SNR: 30.2680524715879
 
  Angular difference between Flight and Ground position is 0.385595 arcmin
 
  Partial Coding Fraction: 0.203125    [ including projection effects ]

  Duration
     T90: 89.9719998836517 +/- 6.25575875610908
        Measured from: -27.2319999933243
                   to: 62.7399998903275     [s; relative to TRIGTIME]
     T50: 44.9959999322891 +/- 3.2013647152701
        Measured from: -17.0599999427795
                   to: 27.9359999895096     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -24.2239999771118     
                   to: -23.2239999771118     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -31.3600000143051     
                   to: 78.567999958992     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     4.397756   6.501672   4.933653   1.182200
           0.178077   0.187677   0.168393   0.147835 [error]
 Peak      0.110342   0.136057   0.174820   0.053133
           0.021201   0.023676   0.022788   0.018120 [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 1.90e-06 3.18e-06 4.03e-06 1.02e-05 1.20e-05 1.93e-05   erg/cm2
              Error 1.25e-07 1.23e-07 1.75e-07 9.83e-07 4.28e-07 1.09e-06   erg/cm2
Peak flux Power-law 1.36e+00 1.36e+00 9.50e-01 1.05e+00 4.09e+00 4.72e+00   ph/cm2/s
              Error 3.94e-01 2.41e-01 1.84e-01 4.23e-01 6.83e-01 7.48e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.78e-06 3.24e-06 4.13e-06 7.10e-06 1.18e-05 1.63e-05   erg/cm2
              Error 1.60e-07 1.37e-07 1.99e-07 2.28e-06 4.63e-07 2.30e-06   erg/cm2
Peak flux Cutoff-PL 1.40e+00 1.34e+00 9.33e-01 1.05e+00 4.11e+00 4.87e+00   ph/cm2/s
              Error -------- -------- 2.52e-01 -------- -------- 1.02e+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    1.657    0.063    -      -           1.17e-02 4.06e-04   62.180 57
CPL   1.370    0.260     119.0  205.0      1.59e-02 4.44e-03   58.410 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.516    0.280    -      -           3.26e-02 5.20e-03   60.470 57
CPL   1.514    1.760    10000.0    0.0      3.27e-02 -1.37e-02   60.480 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: 83.904000 sec.
T50 in the 50-300 keV band: 42.240000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  109.928  -31.360   78.568
T90    89.972  -27.232   62.740
T50    44.996  -17.060   27.936
Peak    1.000  -24.224  -23.224

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
  143.5403   -51.4091   0.0064    50.8200  -150.6191        13.2219866     30.268 TRIG_01064421                 
 
Foreground time interval of the image:
-14.299  78.568 (delta_t =  92.867 [sec])
Background time interval of the image:

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

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

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  -31.360 sec. to   78.568 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65711     ( -0.0630279   0.0632785 )
Norm@50keV  : 1.17101E-02    ( -0.000405997   0.000405848 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   62.18     using 59 bins.
 Reduced chi-squared = 1.09088
# Null hypothesis probability of 2.97e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 109.9 sec: 1.53271 ( -0.05914  0.05938 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.19624e-05 ( -4.28189e-07  4.28357e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -31.360 sec. to   78.568 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.37034     ( -0.267529   0.252537 )
Epeak [keV] : 118.953      ( -33.0485 376.907 )
Norm@50keV  : 1.59428E-02    ( -0.0037114   0.00517238 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.41     using 59 bins.
 Reduced chi-squared = 1.04304
# Null hypothesis probability of 3.87e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 109.9 sec: 1.50221 ( -0.0643  0.06463 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.17668e-05 ( -4.6419e-07  4.62416e-07 ) ergs/cm2

Band function

Time interval is from  -31.360 sec. to   78.568 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]    : 15.3481  (  )
R^2/D10^2   : 0.150410  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  236.86     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.75e-24 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.120e-07   5.616e-08
25- 50  3.294e-06   1.621e-07
50-150  5.334e-06   3.198e-07
15-150  9.441e-06   3.868e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 168.217       (-26.2472      -166.83)
Norm        : 6.19267       (-0.261505     0.285444)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.72     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.12e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.729e-06   1.094e-07
25- 50  3.256e-06   2.297e-07
50-150  6.726e-06   1.623e-06
15-150  1.171e-05   1.929e-06

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.76890        (-1.0146      1.0574)
R1^2/D10^2  : 1.14860        (-0.389583      0.703793)
kT2 [keV]   : 27.4827        (-3.5566      5.20009)
R2^2/D10^2  : 1.38974E-02    (-0.00655684   0.00987445)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.39     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.40e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.537e-06   1.951e-07
25- 50  3.368e-06   2.830e-07
50-150  6.736e-06   8.424e-07
15-150  1.164e-05   9.842e-07

Peak spectrum fit

Power-law model

Time interval is from  -24.224 sec. to  -23.224 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51635     ( -0.276246   0.282851 )
Norm@50keV  : 3.25942E-02    ( -0.00521319   0.00519354 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.47     using 59 bins.
 Reduced chi-squared = 1.06088
# Null hypothesis probability of 3.52e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 4.08729 ( -0.68112  0.68474 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.08432e-07 ( -5.25734e-08  5.27948e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from  -24.224 sec. to  -23.224 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51375     ( -0.952569   2.56651 )
Epeak [keV] : 1.00000E+04      ( -10000 -10000 )
Norm@50keV  : 3.26904E-02    ( -0.00523856   -0.0326911 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.48     using 59 bins.
 Reduced chi-squared = 1.08
# Null hypothesis probability of 3.17e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 4.10773 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.08852e-07 ( -5.39343e-08  4.73038e-08 ) ergs/cm2

Band function

Time interval is from  -24.224 sec. to  -23.224 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]    : 17.0837  (-3.36304  4.2535)
R^2/D10^2   : 0.292202  (-0.157799   0.335322)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   74.12     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.34e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.735e-08   5.897e-09
25- 50  7.704e-08   2.212e-08
50-150  1.608e-07   5.115e-08
15-150  2.552e-07   6.430e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-85.349      -199.363)
Norm        : 16.7745       (-2.65975     2.66017)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.16     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.29e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.177e-08   2.419e-08
25- 50  8.035e-08   4.520e-08
50-150  1.762e-07   9.870e-08
15-150  2.983e-07   1.689e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.22818        (-1.89035      3.86446)
R1^2/D10^2  : 13.6405        (-11.878      49.3164)
kT2 [keV]   : 25.5404        (-6.79107      18.9917)
R2^2/D10^2  : 6.21917E-02    (-0.0524894   0.126592)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.39     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.87e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.649e-08   2.595e-08
25- 50  6.873e-08   3.418e-08
50-150  1.941e-07   1.113e-07
15-150  3.093e-07   1.595e-07

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: 1.68419     ( -0.0747912   0.0752135 )
Norm@50keV  : 9.71381E-03    ( -0.000405162   0.000404475 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.12     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.30e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 92.87 sec: 1.28305 ( -0.0580855  0.0582978 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.36346e-06 ( -3.60523e-07  3.61108e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.42040     ( -0.316704   0.288963 )
Epeak [keV] : 116.159      ( -36.9135 -116.16 )
Norm@50keV  : 1.29940E-02    ( -0.00342434   0.00528425 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.83     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.72e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 92.87 sec: 1.26115 ( -0.03141  0.06283 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.2356e-06 ( -3.92896e-07  3.90732e-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)  = 3.18e-06
S(50-100 keV) = 4.03e-06

T90 vs. Hardness ratio plot

T90                                   = 89.9719998836517 sec.
Hardness ratio (energy fluence ratio) = 1.2673

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.47841
Count Ratio (50-100 keV) / (15-25 keV) = 1.12186

Mask shadow pattern

IMX = -1.069176960702829E+00, IMY = 6.019817123666598E-01

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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:

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

Time interval of the image:
-14.299400 78.568000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.5024 -60.6978    3.8  38.9 -169.0   0.6005   3.0    7.1	Cen X-3                       
186.2983 -62.8012    5.6  35.2  179.7   0.3816   2.1   10.0	GX 301-2                      
244.9650 -15.6316    1.0  37.4   58.7   3.8250  11.6    1.0	Sco X-1                       
256.1088 -37.8268    4.0  40.6   97.4  -1.5234  -2.9    5.9	4U 1700-377                   
257.1389 -40.5103    2.2  41.3  101.5   2.8998   5.3 ------	UNKNOWN                       
241.5435 -80.2842    2.1  51.9  156.2   2.9791   5.4 ------	UNKNOWN                       
202.3189 -60.0677    3.3  30.0  168.2   0.5982   3.5 ------	UNKNOWN                       
218.0932  17.5754    2.2  49.0   -3.2   1.5167   5.3 ------	UNKNOWN                       
206.1004  13.2670    3.4  43.6  -18.6   0.7709   3.4 ------	UNKNOWN                       
141.6244 -56.3441    2.7  51.9 -156.9   1.8700   4.3 ------	UNKNOWN                       
143.5403 -51.4091    0.4  50.8 -150.6  13.2210  30.3 ------	UNKNOWN                       
187.9653  17.6718    3.1  51.5  -40.7   2.4557   3.7 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
166.300630 963.069700
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5068 -40.5535    0.7  12.2 -114.5  10.5009  17.1    1.0	Vela X-1                      
170.3075 -60.6555    1.3  17.4   48.3   6.2429   8.7    2.0	Cen X-3                       
186.6728 -62.5573    0.0  25.3   48.5   0.8341   1.0   12.8	GX 301-2                      
 58.5518 -55.3616    2.5  47.6  145.9  10.2165   4.5 ------	UNKNOWN                       
211.9866 -35.0583    2.3  50.4   15.0   8.2846   5.0 ------	UNKNOWN                       
 73.7760 -44.2186    2.7  45.6  166.1   6.8324   4.3 ------	UNKNOWN                       
156.3716 -19.1304    2.6  33.8  -62.1   4.5580   4.5 ------	UNKNOWN                       
109.2909 -13.3169    3.3  47.1 -132.6   8.2930   3.5 ------	UNKNOWN                       
133.8383 -10.9348    2.8  41.3  -98.7  15.8338   4.1 ------	UNKNOWN

Plot creation:
Sat Jul 30 06:50:51 EDT 2022