GRB201029A: Summary Image Light curves Spectra Distribution Others

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: Sat Jul 30 00:59:07 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1003002
======================================================================

  Trigger: 01003002      Segment: 000

  BAT Trigger Time: 625695616   [s; MET]
      Trigger Stop: 625695680   [s; MET]
               UTC: 2020-10-29T20:19:50.108920    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 229.60109564193   Dec: 44.4639833801875  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    15.03
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    15.03

  Analysis Position:   [ source = BAT ]
    RA: 229.60109564193   Dec: 44.4639833801875  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 229.605163385043   Dec: 44.4686836215144  [deg; J2000]  
        { 15h 18m 25.2s , +44d 28' 07.3" }
         +/- 1.93638746944723 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.813053913880478 [arcmin] (formal 1-sigma fit error)
    SNR: 11.8339418790963
 
  Angular difference between the analysis and refined position is 0.331468 arcmin
 
  Partial Coding Fraction: 0.9609375    [ including projection effects ]

  Duration
     T90: 491.023999929428 +/- 17.6296796935541
        Measured from: 2.72399997711182
                   to: 493.74799990654     [s; relative to TRIGTIME]
     T50: 375.687999844551 +/- 72.097988855034
        Measured from: 19.5520000457764
                   to: 395.239999890327     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 7.05999994277954     
                   to: 8.05999994277954     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.19200003147125     
                   to: 510.784000039101     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.426390   1.624513   1.383078   0.435997
           0.121592   0.125786   0.110327   0.096968 [error]
 Peak      0.023513   0.024724   0.025143   0.013096
           0.005531   0.005891   0.005433   0.004625 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100  512.976   -2.192  510.784
T90   491.024    2.724  493.748
T50   375.688   19.552  395.240
Peak    1.000    7.060    8.060
 
 
====== 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      -1.397    -0.146      0.146       -           -               -         5.92e-04     -4.65e-05          4.63e-05      66.750   57
CPL     -1.399    -0.143      0.178     9999.290    -9999.290      -9999.290      5.94e-04     -5.94e-04          2.15e-04      66.770   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      -1.009     -0.380     0.405       -           -               -         5.17e-03     -1.10e-03          1.09e-03      87.960   57
CPL     -0.949     -7.565     1.272      971.496      N/A           N/A         5.52e-03        N/A               N/A         88.000   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   3.52e-07  6.89e-07  1.05e-06  3.46e-06  2.94e-06  5.55e-06   erg/cm2
      90%_error_low -4.95e-08 -5.76e-08 -1.09e-07 -7.38e-07 -2.60e-07 -8.23e-07   erg/cm2
      90%_error_hi   5.15e-08  5.71e-08  1.08e-07  8.72e-07  2.63e-07  9.34e-07   erg/cm2
Peak flux       PL   1.33e-01  1.80e-01  1.79e-01  3.20e-01  5.96e-01  8.12e-01   ph/cm2/s
      90%_error_low -5.47e-02 -4.88e-02 -4.23e-02 -1.40e-01 -1.28e-01 -1.85e-01   ph/cm2/s
      90%_error_hi   6.31e-02  4.68e-02  4.13e-02  2.01e-01  1.29e-01  2.01e-01   ph/cm2/s
 
Fluence        CPL   3.52e-07  6.89e-07  1.05e-06  3.75e-06  2.94e-06  5.63e-06   erg/cm2
      90%_error_low    N/A       N/A    -1.09e-07    N/A    -2.61e-07 -1.57e-06   erg/cm2
      90%_error_hi     N/A       N/A     1.08e-07    N/A     2.63e-07  3.08e-07   erg/cm2
Peak flux      CPL   1.38e-01  1.78e-01  1.75e-01  3.18e-01  5.99e-01  8.65e-01   ph/cm2/s
      90%_error_low     N/A       N/A       N/A       N/A       N/A   -3.29e-01   ph/cm2/s
      90%_error_hi      N/A       N/A       N/A       N/A       N/A    1.29e-01   ph/cm2/s
 
======================================================================

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  229.6052    44.4687   0.0162    10.3325   124.7488         2.5193623     11.834 TRIG_01003002                 
 
Foreground time interval of the image:
 -2.192  73.101 (delta_t =  75.293 [sec])
Background time interval of the image:
-18.099  -2.192 (delta_t =  15.907 [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

Other quick-look light curves:

• 64 ms binning (zoomed)
• 16 ms binning (zoomed)
• 8 ms binning (zoomed)
• 2 ms binning (zoomed)
• SN=5 or 10 s binning (full-time range)
• Raw light curve

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   -2.192 sec. to  510.784 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.39682     ( -0.146333   0.14616 )
Norm@50keV  : 5.91902E-04    ( -4.65111e-05   4.63494e-05 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.75     using 59 bins.
 Reduced chi-squared = 1.17105
# Null hypothesis probability of 1.77e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 513 sec: 7.20321E-02 ( -0.0056816  0.0056956 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.93628e-06 ( -2.60271e-07  2.62965e-07 ) ergs/cm2
 

Cutoff power-law model

Time interval is from   -2.192 sec. to  510.784 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.39852     ( -0.142965   0.177415 )
Epeak [keV] : 9999.29      ( -9999.35 -9999.35 )
Norm@50keV  : 5.93646E-04    ( -0.000593716   0.000215289 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.77     using 59 bins.
 Reduced chi-squared = 1.19232
# Null hypothesis probability of 1.54e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 513 sec: 7.25812E-02 ( -0.0062463  0.0051319 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.93526e-06 ( -2.60918e-07  2.62803e-07 ) ergs/cm2
 

1-s peak spectrum fit

Power-law model

Time interval is from    7.060 sec. to    8.060 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.00927     ( -0.380391   0.405116 )
Norm@50keV  : 5.17039E-03    ( -0.00109769   0.00109191 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   87.96     using 59 bins.
 Reduced chi-squared = 1.54316
# Null hypothesis probability of 5.29e-03 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.595563 ( -0.128224  0.128716 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.57327e-08 ( -1.29577e-08  1.31135e-08 ) ergs/cm2
 

Cutoff power-law model

Time interval is from    7.060 sec. to    8.060 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.34499     ( -6.16859   2.66824 )
Epeak [keV] : 112.363      (   )
Norm@50keV  : 7.24235E-04    (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   87.82     using 59 bins.
 Reduced chi-squared = 1.56821
# Null hypothesis probability of 4.22e-03 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.599405 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.58882e-08 ( -1.35824e-08  1.06728e-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 = -1.039163475633133E-01, IMY = -1.498015237863478E-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:
-18.099400 -2.192000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4299  35.4838    4.4  26.3  173.5  -0.1193  -2.6    8.6	Her X-1                       
270.6549  61.8681    2.2  39.7  125.9   0.5664   5.2 ------	UNKNOWN                       
283.9282  38.2153    2.1  48.6  159.9   0.6578   5.4 ------	UNKNOWN                       
272.1114   2.7338    2.1  57.0 -154.1   1.3691   5.4 ------	UNKNOWN                       

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

Time interval of the image:
-2.192000 73.100590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3849  35.5030   11.3  26.3  173.6   0.2331   1.0   10.3	Her X-1                       
229.6052  44.4687    1.0  10.3  124.7   2.5185  11.8 ------	UNKNOWN                       

Post-slew image of 15-350 keV band

Time interval of the image:
110.700600 963.060800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3886  35.2122    5.3  21.1 -179.3  -1.4241  -2.2    8.5	Her X-1                       
246.3351  83.8401    3.1  39.7   76.0   9.1562   3.7 ------	UNKNOWN                       
289.8134  53.4219    3.6  39.3  128.0   5.5007   3.2 ------	UNKNOWN                       
199.3092  43.7165    3.1  21.6   -8.0   2.4005   3.8 ------	UNKNOWN                       
154.7637  31.4526    2.6  58.3   -2.1  15.5176   4.5 ------	UNKNOWN                       
245.9913  -1.2657    2.7  48.0 -129.1  12.2213   4.4 ------	UNKNOWN