GRB191106A: 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 v2.46
    Process Start Time: Wed Nov 27 11:54:33 EST 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger933515
======================================================================

  Trigger: 00933515      Segment: 000

  BAT Trigger Time: 594742547.776   [s; MET]
      Trigger Stop: 594742548.288   [s; MET]
               UTC: 2019-11-06T14:15:23.900640    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 269.349636887849   Dec: 46.0518248196464  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.85
     Image Trigger?:     NO
     Rate S/N Ratio:     20.5669638012031  [ if not an image trigger ]
     Image S/N Ratio:    7.85

  Analysis Position:   [ source = BAT ]
    RA: 269.349636887849   Dec: 46.0518248196464  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 269.359318636608   Dec: 46.0473276332839  [deg; J2000]  
        { 17h 57m 26.2s , +46d 02' 50.4" }
         +/- 1.63859635698673 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.741387568123865 [arcmin] (formal 1-sigma fit error)
    SNR: 15.0220716823996
 
  Angular difference between the analysis and refined position is 0.485133 arcmin
 
  Partial Coding Fraction: 0.953125    [ including projection effects ]

  Duration
     T90: 3.43599987030029 +/- 0.324863016551151
        Measured from: -1.25199997425079
                   to: 2.1839998960495     [s; relative to TRIGTIME]
     T50: 1.64799988269806 +/- 0.720988169553211
        Measured from: -0.00800001621246338
                   to: 1.6399998664856     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0479999780654907     
                   to: 0.952000021934509     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.35600006580353     
                   to: 2.37999999523163     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.056877   0.157930   0.156001   0.053594
           0.013764   0.014639   0.013370   0.011352 [error]
 Peak      0.020252   0.054813   0.053791   0.023784
           0.007093   0.007917   0.007290   0.005981 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100    3.736   -1.356    2.380
T90     3.436   -1.252    2.184
T50     1.648   -0.008    1.640
Peak    1.000   -0.048    0.952
 
 
====== 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: PL)
 
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      -0.900    -0.171      0.178       -           -               -         7.59e-03     -7.55e-04          7.49e-04      45.040   57
CPL     -0.595    -0.386      0.759      263.338    -263.338      -263.338      1.04e-02     -3.39e-03          1.15e-02      44.420   56
 
 
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: PL)
 
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      -0.770     -0.267     0.288       -           -               -         9.78e-03     -1.56e-03          1.52e-03      44.710   57
CPL     -0.765     -0.267     0.347     9999.190    -9999.190      -9999.190      9.85e-03     -1.47e-03          1.79e-02      44.710   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   2.07e-08  5.50e-08  1.18e-07  6.56e-07  3.18e-07  8.50e-07   erg/cm2
      90%_error_low -4.18e-09 -6.88e-09 -1.23e-08 -1.47e-07 -3.30e-08 -1.54e-07   erg/cm2
      90%_error_hi   4.49e-09  6.76e-09  1.22e-08  1.78e-07  3.31e-08  1.81e-07   erg/cm2
Peak flux       PL   2.01e-01  3.13e-01  3.67e-01  8.32e-01  1.13e+00  1.71e+00   ph/cm2/s
      90%_error_low -6.55e-02 -6.66e-02 -5.53e-02 -2.52e-01 -1.71e-01 -2.84e-01   ph/cm2/s
      90%_error_hi   7.47e-02  6.52e-02  5.49e-02  3.26e-01  1.72e-01  3.12e-01   ph/cm2/s
 
Fluence        CPL   1.92e-08  5.62e-08  1.22e-07  4.33e-07  3.12e-07  6.30e-07   erg/cm2
      90%_error_low -5.15e-09 -7.39e-09 -1.46e-08 -2.44e-07 -3.60e-08 -2.43e-07   erg/cm2
      90%_error_hi   5.16e-09  7.58e-09  1.49e-08  3.98e-07  3.53e-08  2.75e-07   erg/cm2
Peak flux      CPL   2.01e-01  3.14e-01  3.68e-01  8.31e-01  1.13e+00  1.71e+00   ph/cm2/s
      90%_error_low -6.65e-02 -5.70e-02 -5.52e-02 -5.22e-01 -1.75e-01 -5.56e-01   ph/cm2/s
      90%_error_hi   5.61e-02  6.44e-02  7.05e-02  1.68e-01  1.71e-01  2.85e-01   ph/cm2/s
 
======================================================================

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  269.3593    46.0473   0.0127    15.4453    42.2249         0.4180388     15.022 TRIG_00933515                 
 
Foreground time interval of the image:
 -1.356   2.380 (delta_t =   3.736 [sec])
Background time interval of the image:
-255.275  -1.356 (delta_t = 253.919 [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   -1.356 sec. to    2.380 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.899935     ( -0.170793   0.177779 )
Norm@50keV  : 7.58511E-03    ( -0.000754777   0.000749447 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.04 using 59 PHA bins.
# Reduced chi-squared =         0.7901 for     57 degrees of freedom 
# Null hypothesis probability =   8.742222e-01
 
Photon flux (15-150 keV)    in 3.736 sec: 0.870592 ( -0.086489  0.08674 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.18073e-07 ( -3.29666e-08  3.31451e-08 ) ergs/cm2
 

Cutoff power-law model

Time interval is from   -1.356 sec. to    2.380 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.594798     ( -0.386119   0.758631 )
Epeak [keV] : 263.338      ( -263.34 -263.34 )
Norm@50keV  : 1.03824E-02    ( -0.00339088   0.0115012 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.42 using 59 PHA bins.
# Reduced chi-squared =         0.7933 for     56 degrees of freedom 
# Null hypothesis probability =   8.677069e-01
 
Photon flux (15-150 keV)    in 3.736 sec: 0.859520 ( -0.089846  0.089876 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.12491e-07 ( -3.60404e-08  3.53473e-08 ) ergs/cm2
 

1-s peak spectrum fit

Power-law model

Time interval is from   -0.048 sec. to    0.952 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.77045     ( -0.266657   0.288489 )
Norm@50keV  : 9.78014E-03    ( -0.00155785   0.00152135 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.71 using 59 PHA bins.
# Reduced chi-squared =         0.7845 for     57 degrees of freedom 
# Null hypothesis probability =   8.813884e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.12543 ( -0.171089  0.1722 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.15744e-07 ( -1.80158e-08  1.81281e-08 ) ergs/cm2
 

Cutoff power-law model

Time interval is from   -0.048 sec. to    0.952 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.764559     ( -0.267689   0.346776 )
Epeak [keV] : 9999.19      ( -9999.32 -9999.32 )
Norm@50keV  : 9.85439E-03    ( -0.00146476   0.0178813 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.71 using 59 PHA bins.
# Reduced chi-squared =         0.7985 for     56 degrees of freedom 
# Null hypothesis probability =   8.607360e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.12552 ( -0.174944  0.17087 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.15776e-07 ( -1.89527e-08  1.69848e-08 ) ergs/cm2
 

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 3.436 sec.
Hardness ratio (energy fluence ratio) = 2.14362998302

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

S(15-50 keV)  = 7.574058e-08
S(50-150 keV) = 2.423287e-07

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 = 2.046010439575555E-01, IMY = -1.856828444633533E-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:
-255.275400 -1.356000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4700  35.2473    1.9  11.1  -27.9   1.7257   6.2    5.7	Her X-1                       
268.5298  -1.4401    8.1  32.2 -148.6  -0.5673  -1.4    9.7	SW J1753.5-0127               
270.4356 -25.1158    6.6  56.0 -149.2   2.6191   1.8    8.5	GX 5-1                        
273.9642 -14.0594    4.9  45.4 -155.0   1.4597   2.4    2.8	GX 17+2                       
288.8617  10.8100   12.3  28.7  164.2  -0.3098  -0.9    8.9	GRS 1915+105                  
299.5563  35.1937    1.0  27.9  107.0   4.6540  11.4    1.7	Cyg X-1                       
308.2028  40.8826    3.6  34.9   96.4   1.8649   3.2    5.9	Cyg X-3                       
213.0592  68.5524    3.1  48.5   11.9   2.0388   3.7 ------	UNKNOWN                       
285.1331  -2.9833    2.9  38.1 -175.9   1.6024   3.9 ------	UNKNOWN                       
242.9187  22.8422    2.5  22.5  -69.8   1.6527   4.6 ------	UNKNOWN                       
209.8413  43.6866    3.3  46.1  -22.1   1.9984   3.5 ------	UNKNOWN                       
224.9744  26.7740    2.7  36.5  -50.6   2.0520   4.2 ------	UNKNOWN                       
267.9030 -23.6577    2.4  54.4 -146.4   6.8042   4.9 ------	UNKNOWN                       

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

Time interval of the image:
-1.356000 2.380000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4590  35.3436 1190.8  11.2  -27.5  -0.0002  -0.0    0.1	Her X-1                       
268.3930  -1.2707    0.0  32.1 -148.4   0.0447   1.4   11.0	SW J1753.5-0127               
270.2303 -25.1237   31.8  56.0 -148.9  -0.0550  -0.4    4.0	GX 5-1                        
273.9449 -13.9059    8.0  45.2 -155.0  -0.0817  -1.4    8.6	GX 17+2                       
288.7308  10.7722   38.7  28.6  164.5   0.0095   0.3   11.1	GRS 1915+105                  
299.4602  35.0235    0.0  27.8  107.4   0.0490   1.3   12.5	Cyg X-1                       
308.2039  40.8408    6.8  34.9   96.5   0.0998   1.7    7.9	Cyg X-3                       
295.1017  25.9336    2.5  25.5  128.8   0.1527   4.7 ------	UNKNOWN                       
269.3593  46.0473    0.8  15.4   42.2   0.4181  15.0 ------	UNKNOWN                       

Post-slew image of 15-350 keV band

Time interval of the image:
54.124600 719.219200
720.224000 962.302000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4813  35.3577    1.6  15.5  -85.7   6.4521   7.4    1.5	Her X-1                       
268.2480  -1.5230    7.7  47.6 -135.8  -4.2663  -1.5    8.3	SW J1753.5-0127               
288.8317  11.1021    4.5  38.7 -168.9   3.1589   2.6    9.6	GRS 1915+105                  
299.5940  35.1935    0.8  25.2  147.4  14.3810  15.4    0.5	Cyg X-1                       
308.1590  40.9529    1.6  28.3  128.9   7.5852   7.2    2.2	Cyg X-3                       
326.0507  38.2818    6.3  41.9  122.4   7.3496   1.8    6.2	Cyg X-2                       
123.7953  86.6736    4.1  46.7   40.2   6.3375   2.8 ------	UNKNOWN                       
292.6151  13.4441    4.1  38.1 -175.9   3.1052   2.8 ------	UNKNOWN