Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time: Thu Nov 10 21:01:52 EST 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1062150
======================================================================

  Trigger: 01062150      Segment: 000

  BAT Trigger Time: 649313876.672   [s; MET]
      Trigger Stop: 649313877.696   [s; MET]
               UTC: 2021-07-30T04:57:29.213460    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 149.592469795951   Dec: 69.7052044190183  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    18.82
     Image Trigger?:     NO
     Rate S/N Ratio:     68.6221538571911  [ if not an image trigger ]
     Image S/N Ratio:    18.82

  Analysis Position:   [ source = BAT ]
    RA: 149.592469795951   Dec: 69.7052044190183  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 149.569858961821   Dec: 69.7034524130317  [deg; J2000]  
        { 09h 58m 16.8s , +69d 42' 12.4" }
         +/- 1.01438945493361 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.382132399199096 [arcmin] (formal 1-sigma fit error)
    SNR: 29.8026227836214
 
  Angular difference between the analysis and refined position is 0.482172 arcmin
 
  Partial Coding Fraction: 0.5546875    [ including projection effects ]

  Duration
     T90: 3.85999989509583 +/- 0.657814625556765
        Measured from: 0.0279999971389771
                   to: 3.8879998922348     [s; relative to TRIGTIME]
     T50: 1.67999994754791 +/- 0.268745212913287
        Measured from: 0.503999948501587
                   to: 2.1839998960495     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.171999931335449     
                   to: 1.17199993133545     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.320000052452087     
                   to: 5.01199996471405     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.449499   0.676567   0.585666   0.160058
           0.027093   0.030677   0.028361   0.023416 [error]
 Peak      0.156166   0.302528   0.288930   0.087175
           0.013415   0.016960   0.016916   0.012284 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100    5.332   -0.320    5.012
T90     3.860    0.028    3.888
T50     1.680    0.504    2.184
Peak    1.000    0.172    1.172
 
 
====== Spectral Analysis Summary =====================================
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^{Ph_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 both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedo
 
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: N/A)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      -1.143    -0.258      0.267       -           -               -         7.21e-04     -1.06e-04          1.06e-04      54.780   57
CPL     -0.917    -0.676      1.152      256.377    -256.377      -256.377      9.25e-04     -3.00e-04          2.24e-03      54.620   56
 
 
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      -1.187     -0.105     0.105       -           -               -         5.47e-02     -3.41e-03          3.41e-03      49.850   57
CPL     -0.981     -0.259     0.423      265.944    -265.944      -265.944      6.88e-02     -1.67e-02          3.97e-02      49.050   56
 
 
=== 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         PL   1.41e-07  3.23e-07  5.85e-07  2.51e-06  1.59e-06  3.56e-06   erg/cm2
      90%_error_low -3.90e-08 -5.61e-08 -1.01e-07 -8.54e-07 -2.57e-07 -9.30e-07   erg/cm2
      90%_error_hi   4.24e-08  5.48e-08  9.98e-08  1.14e-06  2.59e-07  1.17e-06   erg/cm2
Peak flux       PL   1.67e+00  2.02e+00  1.78e+00  2.68e+00  6.41e+00  8.16e+00   ph/cm2/s
      90%_error_low -1.91e-01 -1.46e-01 -1.29e-01 -3.87e-01 -4.07e-01 -5.42e-01   ph/cm2/s
      90%_error_hi   1.98e-01  1.45e-01  1.29e-01  4.25e-01  4.07e-01  5.48e-01   ph/cm2/s
 
Fluence        CPL   1.35e-07  3.30e-07  5.97e-07  1.79e-06  1.57e-06  2.86e-06   erg/cm2
      90%_error_low -4.67e-08 -6.11e-08 -1.10e-07 -1.31e-06 -2.86e-07 -1.34e-06   erg/cm2
      90%_error_hi   4.60e-08  6.51e-08  1.15e-07  9.58e-07  2.76e-07  1.54e-06   erg/cm2
Peak flux      CPL   1.60e+00  2.06e+00  1.82e+00  2.13e+00  6.37e+00  7.62e+00   ph/cm2/s
      90%_error_low -2.28e-01 -1.62e-01 -1.51e-01 -7.44e-01 -4.14e-01 -8.47e-01   ph/cm2/s
      90%_error_hi   2.34e-01  1.66e-01  1.55e-01  6.87e-01  4.14e-01  8.61e-01   ph/cm2/s
 
======================================================================
  • 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
  149.5699    69.7035   0.0065    30.0697   -55.3614         1.8762476     29.803 TRIG_01062150                 
 
Foreground time interval of the image:
 -0.320   5.012 (delta_t =   5.332 [sec])
Background time interval of the image:
-239.672  -0.320 (delta_t = 239.352 [sec])




    Light Curves

    Note: The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.

    Full-time range; 1 s binning

    Bokeh Plot

    Other quick-look light curves:




    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from   -0.672 sec. to  213.328 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.14339     ( -0.257627   0.266776 )
Norm@50keV  : 7.20959E-04    ( -0.000105768   0.000105613 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.78     using 59 bins.
 Reduced chi-squared = 0.961053
# Null hypothesis probability of 5.59e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 214 sec: 8.40135E-02 ( -0.0126873  0.0127289 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.59164e-06 ( -2.56567e-07  2.59353e-07 ) ergs/cm2
    Cutoff power-law model
    Time interval is from   -0.672 sec. to  213.328 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.916919     ( -0.675519   1.1522 )
Epeak [keV] : 256.377      ( -256.422 -256.422 )
Norm@50keV  : 9.24682E-04    ( -0.000300438   0.0022396 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.62     using 59 bins.
 Reduced chi-squared = 0.975357
# Null hypothesis probability of 5.27e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 214 sec: 8.31845E-02 ( -0.0131919  0.0131744 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.56615e-06 ( -2.85579e-07  2.7642e-07 ) ergs/cm2

    1-s peak spectrum fit

    Power-law model
    Time interval is from    0.172 sec. to    1.172 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.1869     ( -0.104895   0.105448 )
Norm@50keV  : 5.47189E-02    ( -0.00340792   0.00340767 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.85     using 59 bins.
 Reduced chi-squared = 0.874561
# Null hypothesis probability of 7.38e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 6.41132 ( -0.40715  0.40738 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.57276e-07 ( -3.88103e-08  3.90037e-08 ) ergs/cm2
    Cutoff power-law model
    Time interval is from    0.172 sec. to    1.172 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.980577     ( -0.258607   0.423067 )
Epeak [keV] : 265.944      ( -265.947 -265.947 )
Norm@50keV  : 6.88070E-02    ( -0.0166571   0.0397329 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.05     using 59 bins.
 Reduced chi-squared = 0.875893
# Null hypothesis probability of 7.33e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 6.37299 ( -0.41373  0.41365 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.51341e-07 ( -4.10005e-08  4.07112e-08 ) ergs/cm2

    Time-resolved spectra




    Distribution

    T90 vs. Hardness ratio plot 

    T90                                   = N/A sec.
Hardness ratio (energy fluence ratio) = N/A

    S(15-50 keV) vs. S(50-150 keV) plot 

    S(15-50 keV)  = N/A
S(50-150 keV) = N/A

    The dash-dotted line and the dashed line traces the fluences calculated from the Band function with Epeak = 15 and 150 keV, respectively. Both lines assume a canonical values of alpha = -1 and beta = -2.5.




    Mask shadow pattern 

    IMX = 3.290872601135894E-01, IMY = 4.763524701263181E-01

    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:
-239.672000 -0.320000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3938  35.2481    6.7  33.0  104.8   0.9524   1.7    6.5	Her X-1                       
234.0288  17.1920    2.4  43.0  143.7   3.8232   4.8 ------	UNKNOWN                       
260.0532  57.7529    3.1  21.3   60.0   1.1564   3.7 ------	UNKNOWN                       
180.9736  37.9453    2.8  32.0 -128.6   1.8709   4.2 ------	UNKNOWN                       
120.3958  63.9429    2.8  42.7  -54.8   3.4854   4.2 ------	UNKNOWN

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

    Time interval of the image:
-0.320000 5.012000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4901  35.1565    0.0  33.1  104.8  -0.1536  -2.1   11.3	Her X-1                       
239.7581  16.9013    2.8  44.6  136.1   0.6270   4.1 ------	UNKNOWN                       
268.2280  51.0813    2.3  28.6   68.8   0.3295   5.1 ------	UNKNOWN                       
277.1849  65.0666    2.4  27.0   37.1   0.2639   4.8 ------	UNKNOWN                       
149.5699  69.7035    0.4  30.1  -55.4   1.8761  29.8 ------	UNKNOWN

    Post-slew image of 15-350 keV band 

    Time interval of the image:
70.228600 204.628600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
198.7013  70.2246    2.7  16.4  131.4   0.8026   4.3 ------	UNKNOWN                       
 55.7722  38.8943    2.8  55.2   -4.9   2.2284   4.1 ------	UNKNOWN                       
 75.0777  29.1164    3.2  57.5  -27.2   4.5070   3.7 ------	UNKNOWN                       
 82.2382  30.3009    2.4  53.9  -33.5   4.9106   4.8 ------	UNKNOWN