GRB220714B: 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: Mon Oct 24 11:29:49 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1116221
======================================================================

  Trigger: 01116221      Segment: 000

  BAT Trigger Time: 679499914.048   [s; MET]
      Trigger Stop: 679499914.56   [s; MET]
               UTC: 2022-07-14T13:58:04.554000    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 47.0721354244508   Dec: -19.334163611719  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.45
     Image Trigger?:     NO
     Rate S/N Ratio:     15.2970585407784  [ if not an image trigger ]
     Image S/N Ratio:    7.45

  Analysis Position:   [ source = BAT ]
    RA: 47.0721354244508   Dec: -19.334163611719  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 47.0831291182172   Dec: -19.318844639361  [deg; J2000]  
        { 03h 08m 20.0s , -19d 19' 07.8" }
         +/- 1.24168732108811 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.467216231850978 [arcmin] (formal 1-sigma fit error)
    SNR: 22.3262184947459
 
  Angular difference between the analysis and refined position is 1.110072 arcmin
 
  Partial Coding Fraction: 0.8828125    [ including projection effects ]

  Duration
     T90: 49.039999961853 +/- 7.73532831636294
        Measured from: -19.6840000152588
                   to: 29.3559999465942     [s; relative to TRIGTIME]
     T50: 16.7039999961853 +/- 0.667269054245118
        Measured from: 3.25199997425079
                   to: 19.9559999704361     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 12.892000079155     
                   to: 13.892000079155     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -47.7999999523163     
                   to: 45.7480000257492     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.941126   3.174516   1.788501   0.391118
           0.065341   0.068402   0.062079   0.061136 [error]
 Peak      0.139469   0.187965   0.114798   0.033108
           0.008660   0.009765   0.008482   0.006822 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100   93.548  -47.800   45.748
T90    49.040  -19.684   29.356
T50    16.704    3.252   19.956
Peak    1.000   12.892   13.892
 
 
====== 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      -1.909    -0.066      0.065       -           -               -         5.18e-03     -1.72e-04          1.71e-04      45.500   57
CPL     -1.909    -0.066      0.066     9999.280    -9999.270      -9999.280      5.19e-03     -1.43e-03          1.10e-03      45.510   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      -1.648     -0.114     0.112       -           -               -         2.94e-02     -1.97e-03          1.95e-03      40.800   57
CPL     -1.449     -0.293     0.462      131.456     -62.435      -131.456      3.75e-02     -9.73e-03          2.77e-02      40.160   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   9.10e-07  1.30e-06  1.39e-06  2.74e-06  4.46e-06  6.35e-06   erg/cm2
      90%_error_low -5.13e-08 -4.10e-08 -6.60e-08 -2.79e-07 -1.46e-07 -3.26e-07   erg/cm2
      90%_error_hi   5.25e-08  4.09e-08  6.61e-08  3.01e-07  1.47e-07  3.42e-07   erg/cm2
Peak flux       PL   1.40e+00  1.29e+00  8.22e-01  8.06e-01  3.84e+00  4.31e+00   ph/cm2/s
      90%_error_low -1.41e-01 -8.16e-02 -7.18e-02 -1.34e-01 -2.39e-01 -2.68e-01   ph/cm2/s
      90%_error_hi   1.45e-01  8.14e-02  7.16e-02  1.50e-01  2.39e-01  2.69e-01   ph/cm2/s
 
Fluence        CPL   9.22e-07  1.30e-06  1.39e-06  2.97e-06  4.49e-06  6.34e-06   erg/cm2
      90%_error_low -6.33e-08 -4.41e-08 -4.55e-08    N/A    -1.91e-07 -7.02e-07   erg/cm2
      90%_error_hi   4.15e-08  5.07e-08  6.64e-08    N/A     1.08e-07  3.31e-07   erg/cm2
Peak flux      CPL   1.35e+00  1.31e+00  8.31e-01  6.22e-01  3.81e+00  4.12e+00   ph/cm2/s
      90%_error_low -1.66e-01 -9.74e-02 -7.52e-02 -2.61e-01 -2.51e-01 -3.77e-01   ph/cm2/s
      90%_error_hi   1.68e-01  1.01e-01  7.64e-02  2.27e-01  2.50e-01  4.19e-01   ph/cm2/s
 
======================================================================

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   47.0831   -19.3188   0.0086    19.4986    32.0722         3.8084303     22.326 TRIG_01116221                 
 
Foreground time interval of the image:
-47.800   9.853 (delta_t =  57.653 [sec])
Background time interval of the image:
-179.048 -47.800 (delta_t = 131.248 [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  -47.800 sec. to   45.748 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.90924     ( -0.0660206   0.0654537 )
Norm@50keV  : 5.18304E-03    ( -0.000172178   0.000171299 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   45.50     using 59 bins.
 Reduced chi-squared = 0.798246
# Null hypothesis probability of 8.63e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 93.55 sec: 0.746802 ( -0.024864  0.02498 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.45896e-06 ( -1.45915e-07  1.46511e-07 ) ergs/cm2
 

Cutoff power-law model

Time interval is from  -47.800 sec. to   45.748 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.90907     ( -0.0660937   0.0659907 )
Epeak [keV] : 9999.28      ( -9999.35 -9999.36 )
Norm@50keV  : 5.18578E-03    ( -0.00142886   0.00110149 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   45.51     using 59 bins.
 Reduced chi-squared = 0.812679
# Null hypothesis probability of 8.41e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 93.55 sec: 0.751730 ( -0.029813  0.020048 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.49369e-06 ( -1.91362e-07  1.07536e-07 ) ergs/cm2
 

1-s peak spectrum fit

Power-law model

Time interval is from   12.892 sec. to   13.892 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.64781     ( -0.113563   0.11165 )
Norm@50keV  : 2.94449E-02    ( -0.00196958   0.00195286 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   40.80     using 59 bins.
 Reduced chi-squared = 0.715789
# Null hypothesis probability of 9.48e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 3.84215 ( -0.23894  0.2391 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.73949e-07 ( -1.95649e-08  1.97483e-08 ) ergs/cm2
 

Cutoff power-law model

Time interval is from   12.892 sec. to   13.892 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.44887     ( -0.292979   0.462165 )
Epeak [keV] : 131.456      ( -62.4369 -131.458 )
Norm@50keV  : 3.75032E-02    ( -0.00973007   0.0276511 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   40.16     using 59 bins.
 Reduced chi-squared = 0.717143
# Null hypothesis probability of 9.45e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 3.80617 ( -0.25068  0.25043 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.68955e-07 ( -2.23738e-08  2.21971e-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 = 3.000499177724512E-01, IMY = -1.880177922912658E-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:
-179.048000 -47.800000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6967  21.9831    6.1  39.5 -102.2   2.5538   1.9    4.0	Crab                          
 72.4191 -27.8842    3.6  35.2  -12.0   1.5638   3.2 ------	UNKNOWN                       
 58.9584  34.8267    2.1  35.9 -143.5   3.0515   5.5 ------	UNKNOWN                       
 85.2533 -19.6583    3.1  39.7  -34.4   2.4389   3.8 ------	UNKNOWN                       

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

Time interval of the image:
-47.800000 9.852600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6656  21.9975    3.6  39.5 -102.3   1.7127   3.3    2.1	Crab                          
 10.9775  25.2815    3.3  45.4  150.7   1.6612   3.6 ------	UNKNOWN                       
 25.5824  24.3932    2.7  34.0  161.5   0.9060   4.2 ------	UNKNOWN                       
 47.0831 -19.3189    0.5  19.5   32.1   3.8083  22.3 ------	UNKNOWN                       
 92.9719   0.5780    2.5  43.0  -67.0   3.2141   4.7 ------	UNKNOWN                       

Post-slew image of 15-350 keV band

Time interval of the image:
64.052590 178.652590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
  7.8703  -6.0722    3.2  40.4  132.8   2.3631   3.7  595.7	UNKNOWN                       
  9.5149   8.4101    2.9  46.3  152.4   2.7262   3.9 ------	UNKNOWN                       
 35.8127 -53.0843    2.3  34.9   40.8   1.7661   5.1 ------	UNKNOWN                       
 52.1352 -47.1919    2.2  28.2   21.7   1.2019   5.2 ------	UNKNOWN                       
 25.6212  29.4226    2.9  53.0 -174.6   2.3236   3.9 ------	UNKNOWN                       
 78.2218 -43.1341    3.2  35.3  -11.8   0.9251   3.6 ------	UNKNOWN