batgrbproduct analysis for trigger=1061284

batgrbproduct Analysis for Trigger=1061284

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 22:49:00 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1061284
======================================================================

  Trigger: 01061284      Segment: 000

  BAT Trigger Time: 648744398.336   [s; MET]
      Trigger Stop: 648744399.36   [s; MET]
               UTC: 2021-07-23T14:46:10.915460    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 121.726128854254   Dec: -32.889330847315  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    14.56
     Image Trigger?:     NO
     Rate S/N Ratio:     36.3455636907725  [ if not an image trigger ]
     Image S/N Ratio:    14.56

  Flight Position:   [ source = BAT ]
    RA: 121.726128854254   Dec: -32.889330847315  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 121.720931608691   Dec: -32.8937052398194  [deg; J2000]  
        { 08h 06m 53.0s , -32d 53' 37.3" }
         +/- 0.660909558124809 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.175657637037275 [arcmin] (formal 1-sigma fit error)
    SNR: 54.961469164534
 
  Angular difference between Flight and Ground position is 0.370744 arcmin
 
  Partial Coding Fraction: 0.7734375    [ including projection effects ]

  Duration
     T90: 55.0639998912811 +/- 449.680242135536
        Measured from: -1.89199995994568
                   to: 53.1719999313354     [s; relative to TRIGTIME]
     T50: 18.9719998836517 +/- 4.09143896092851
        Measured from: 3.96800005435944
                   to: 22.9399999380112     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.68400001525879     
                   to: 3.68400001525879     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.58799993991852     
                   to: 612.796000003815     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.029715   3.890308   2.840110   0.432043
           0.173856   0.179570   0.157314   0.139893 [error]
 Peak      0.071580   0.132988   0.133408   0.023526
           0.009608   0.010925   0.010613   0.007401 [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 9.75e-07 1.64e-06 2.09e-06 5.33e-06 6.17e-06 1.00e-05   erg/cm2
              Error 9.00e-08 9.02e-08 1.56e-07 8.59e-07 3.67e-07 9.79e-07   erg/cm2
Peak flux Power-law 7.20e-01 8.96e-01 8.11e-01 1.27e+00 2.87e+00 3.70e+00   ph/cm2/s
              Error 1.15e-01 9.13e-02 7.92e-02 2.50e-01 2.57e-01 3.44e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.08e-07 1.69e-06 2.12e-06 3.04e-06 5.98e-06 7.78e-06   erg/cm2
              Error 1.10e-07 1.07e-07 1.67e-07 1.75e-06 4.13e-07 1.79e-06   erg/cm2
Peak flux Cutoff-PL 5.87e-01 9.72e-01 9.04e-01 5.39e-01 2.80e+00 3.00e+00   ph/cm2/s
              Error 1.37e-01 1.09e-01 1.00e-01 2.79e-01 2.61e-01 3.70e-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    1.650    0.099    -      -           1.07e-03 5.98e-05   63.310 57
CPL   1.261    0.405      94.9 1052.8      1.68e-03 8.10e-04   60.370 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.144    0.138    -      -           2.46e-02 2.16e-03   63.820 57
CPL   0.173    0.641     101.5   47.5      7.15e-02 5.49e-02   55.240 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: 22.848000 sec.
T50 in the 50-300 keV band: 10.240000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  617.384   -4.588  612.796
T90    55.064   -1.892   53.172
T50    18.972    3.968   22.940
Peak    1.000    2.684    3.684

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
  121.7209   -32.8937   0.0035    31.3072   -15.3239         5.9106283     54.961 TRIG_01061284                 
 
Foreground time interval of the image:
 -4.588  15.565 (delta_t =  20.153 [sec])
Background time interval of the image:
-239.336  -4.588 (delta_t = 234.748 [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   -4.588 sec. to  612.796 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64963     ( -0.0983616   0.0994708 )
Norm@50keV  : 1.07438E-03    ( -5.99789e-05   5.9693e-05 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   63.31     using 59 bins.
 Reduced chi-squared = 1.1107
# Null hypothesis probability of 2.64e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 617.4 sec: 0.140275 ( -0.007725  0.00774 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.17016e-06 ( -3.65635e-07  3.68317e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -4.588 sec. to  612.796 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26114     ( -0.423607   0.387055 )
Epeak [keV] : 94.8909      ( -26.4307 2079.13 )
Norm@50keV  : 1.68193E-03    ( -0.000592364   0.001028 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.37     using 59 bins.
 Reduced chi-squared = 1.07804
# Null hypothesis probability of 3.21e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 617.4 sec: 0.137011 ( -0.008358  0.008363 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.97801e-06 ( -4.11713e-07  4.13397e-07 ) ergs/cm2

Band function

Time interval is from   -4.588 sec. to  612.796 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]    : 14.3682  (  )
R^2/D10^2   : 1.75646E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  129.35     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.52e-07 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.716e-07   4.918e-08
25- 50  1.799e-06   1.269e-07
50-150  2.478e-06   2.544e-07
15-150  4.749e-06   3.031e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 158.048       (-38.4266      -157.457)
Norm        : 0.572853       (-0.0344269     0.0413732)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.53     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.50e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.042e-07   6.977e-08
25- 50  1.688e-06   1.818e-07
50-150  3.404e-06   1.097e-06
15-150  5.997e-06   1.420e-06

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.12213        (-0.989327      1.18099)
R1^2/D10^2  : 0.442185        (-0.245219      0.682732)
kT2 [keV]   : 19.9690        (-2.17956      2.9575)
R2^2/D10^2  : 4.61291E-03    (-0.00191049   0.00259778)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.33     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.54e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.496e-07   2.878e-07
25- 50  1.596e-06   2.294e-07
50-150  3.245e-06   4.519e-07
15-150  5.791e-06   8.532e-07

Peak spectrum fit

Power-law model

Time interval is from    2.684 sec. to    3.684 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.14438     ( -0.138675   0.136796 )
Norm@50keV  : 2.45922E-02    ( -0.00215661   0.00215625 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   63.82     using 59 bins.
 Reduced chi-squared = 1.11965
# Null hypothesis probability of 2.49e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.86605 ( -0.25714  0.25745 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.53618e-07 ( -2.41141e-08  2.42573e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    2.684 sec. to    3.684 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.172854     ( -0.690651   0.591316 )
Epeak [keV] : 101.476      ( -22.5747 72.3258 )
Norm@50keV  : 7.14862E-02    ( -0.0334326   0.0763619 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.24     using 59 bins.
 Reduced chi-squared = 0.986429
# Null hypothesis probability of 5.04e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.79812 ( -0.26151  0.26148 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.42633e-07 ( -2.59823e-08  2.58396e-08 ) ergs/cm2

Band function

Time interval is from    2.684 sec. to    3.684 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]    : 18.8891  (-1.93234  2.20551)
R^2/D10^2   : 0.168876  (-0.0517268   0.07245)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   67.29     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.65e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.187e-08   1.991e-09
25- 50  5.685e-08   7.515e-09
50-150  1.489e-07   2.200e-08
15-150  2.176e-07   2.440e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-18.3434      -200)
Norm        : 11.7883       (-1.06165     1.06165)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   82.56     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.51e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.935e-08   2.930e-09
25- 50  5.645e-08   1.518e-08
50-150  1.238e-07   5.486e-08
15-150  2.096e-07   8.068e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.48413        (-3.0948      4.6236)
R1^2/D10^2  : 0.801426        (-0.478748      1.53709)
kT2 [keV]   : 29.1091        (-7.06424      40.0025)
R2^2/D10^2  : 3.09103E-02    (-0.0289173   0.0579057)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.52     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.31e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.856e-08   8.855e-09
25- 50  5.854e-08   2.983e-08
50-150  1.687e-07   8.644e-08
15-150  2.458e-07   1.154e-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: 1.25990     ( -0.0476731   0.0475778 )
Norm@50keV  : 2.00257E-02    ( -0.000534932   0.000534713 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.82     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.75e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 20.15 sec: 2.37235 ( -0.068203  0.0683479 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.02794e-06 ( -1.12791e-07  1.12919e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.627665     ( -0.223946   0.213528 )
Epeak [keV] : 127.493      ( -18.6364 34.7042 )
Norm@50keV  : 3.74414E-02    ( -0.00695739   0.00896613 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   39.09     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.58e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 20.15 sec: 2.28171 ( -0.07331  0.07358 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.91958e-06 ( -1.20557e-07  1.20255e-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)  = 1.64e-06
S(50-100 keV) = 2.09e-06

T90 vs. Hardness ratio plot

T90                                   = 55.0639998912811 sec.
Hardness ratio (energy fluence ratio) = 1.27439

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.28405
Count Ratio (50-100 keV) / (15-25 keV) = 0.937418

Mask shadow pattern

IMX = 5.865584203005796E-01, IMY = 1.607272149705196E-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:
-239.336000 -4.588000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6056  22.0157    0.6  41.6 -147.2  10.4168  19.7    1.5	Crab                          
135.3912 -40.6232    8.9  44.0   -8.5   0.6430   1.3    7.5	Vela X-1                      
 67.5005  14.5693    3.1  40.4 -173.2   1.6521   3.7 ------	UNKNOWN                       
149.8326 -33.2996    4.3  54.6  -20.0   2.5869   2.7 ------	UNKNOWN

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

Time interval of the image:
-4.588000 15.564600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6287  22.0225  369.4  41.6 -147.2  -0.0050  -0.0    0.5	Crab                          
135.5550 -40.4425    4.2  44.1   -8.8   0.4431   2.8    6.8	Vela X-1                      
 67.5607 -26.6406    2.6  22.2  108.0   0.4924   4.4 ------	UNKNOWN                       
121.7209 -32.8937    0.2  31.3  -15.3   5.9107  55.0 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
78.164590 962.716300
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5179 -40.5792    1.2  13.4   37.4   6.9872   9.6    1.5	Vela X-1                      
170.1161 -60.6306    5.7  41.7   55.0   4.0549   2.0    5.9	Cen X-3                       
119.7678  -0.9425    2.6  32.0  -95.3   5.6908   4.4 ------	UNKNOWN

Plot creation:
Sat Jul 30 06:55:07 EDT 2022