batgrbproduct analysis for trigger=1116221

batgrbproduct Analysis for Trigger=1116221

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): 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

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

  Ground 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 Flight and Ground 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 ] 

======================================================================
 
=== 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 9.10e-07 1.30e-06 1.39e-06 2.74e-06 4.46e-06 6.35e-06   erg/cm2
              Error 5.19e-08 4.09e-08 6.60e-08 2.90e-07 1.46e-07 3.34e-07   erg/cm2
Peak flux Power-law 1.40e+00 1.29e+00 8.22e-01 8.06e-01 3.84e+00 4.31e+00   ph/cm2/s
              Error 1.43e-01 8.15e-02 7.17e-02 1.42e-01 2.39e-01 2.69e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.21e-07 1.30e-06 1.39e-06 2.97e-06 4.49e-06 6.34e-06   erg/cm2
              Error 5.24e-08 4.74e-08 5.60e-08 -------- 1.49e-07 5.17e-07   erg/cm2
Peak flux Cutoff-PL 1.35e+00 1.31e+00 8.31e-01 6.22e-01 3.81e+00 4.12e+00   ph/cm2/s
              Error 1.67e-01 9.90e-02 7.58e-02 2.44e-01 2.51e-01 3.98e-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    1.909    0.066    -      -           5.18e-03 1.72e-04   45.500 57
CPL   1.909    0.066    9999.3   -0.0      5.19e-03 1.27e-03   45.510 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.648    0.113    -      -           2.94e-02 1.96e-03   40.800 57
CPL   1.449    0.378     131.5  -34.5      3.75e-02 1.87e-02   40.160 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: 131.584000 sec.
T50 in the 50-300 keV band: 31.104000 sec.

 
=== 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

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
   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])

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

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

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  -47.800 sec. to   45.748 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.90924     ( -0.0654537   0.0660206 )
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     ( -0.0659907   0.0660937 )
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

Band function

Time interval is from  -47.800 sec. to   45.748 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]    : 11.8391  (  )
R^2/D10^2   : 0.168185  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  319.50     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.46e-38 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.659e-07   2.849e-08
25- 50  1.443e-06   5.426e-08
50-150  1.205e-06   9.542e-08
15-150  3.114e-06   1.076e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 90.8143       (-10.7687      13.2651)
Norm        : 3.24844       (-0.169686     0.187603)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   64.96     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.19e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.931e-07   4.626e-08
25- 50  1.344e-06   4.818e-08
50-150  2.058e-06   4.696e-07
15-150  4.195e-06   4.635e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.36379        (-0.530142      0.557338)
R1^2/D10^2  : 1.37717        (-0.377536      0.562823)
kT2 [keV]   : 25.1342        (-2.79057      3.63362)
R2^2/D10^2  : 7.97957E-03    (-0.00301172   0.00430892)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   42.88     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.83e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.325e-07   7.919e-08
25- 50  1.314e-06   8.326e-08
50-150  2.274e-06   2.746e-07
15-150  4.420e-06   3.433e-07

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     ( -0.11165   0.113563 )
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     ( -0.462165   0.292979 )
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

Band function

Time interval is from   12.892 sec. to   13.892 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]    : 12.5735  (-0.974992  1.08352)
R^2/D10^2   : 0.783622  (-0.202795   0.267227)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  100.19     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.60e-04 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.627e-08   2.940e-09
25- 50  8.722e-08   6.130e-09
50-150  8.544e-08   1.223e-08
15-150  1.989e-07   1.545e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 152.561       (-40.8096      -152.179)
Norm        : 15.8156       (-1.09711     1.27993)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   40.52     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.52e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.056e-08   3.585e-09
25- 50  7.537e-08   1.024e-08
50-150  1.498e-07   5.952e-08
15-150  2.657e-07   6.185e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.58766        (-1.30152      1.3315)
R1^2/D10^2  : 3.48727        (-1.40539      2.98335)
kT2 [keV]   : 29.7359        (-7.02021      13.9471)
R2^2/D10^2  : 2.66163E-02    (-0.0187137   0.0437461)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   40.03     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.35e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.851e-08   8.665e-09
25- 50  7.820e-08   1.448e-08
50-150  1.548e-07   6.634e-08
15-150  2.715e-07   8.155e-08

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: 1.78520     ( -0.0979626   0.0993571 )
Norm@50keV  : 3.73653E-03    ( -0.000203904   0.000201953 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.38     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.24e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 57.65 sec: 0.511962 ( -0.0252754  0.0253367 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.98421e-06 ( -1.11236e-07  1.12364e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.78356     ( -0.146263   0.100651 )
Epeak [keV] : 9998.84      ( -9999.34 -9999.35 )
Norm@50keV  : 3.74137E-03    ( -0.000205583   0.00147787 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.39     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.88e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 57.65 sec: 0.511744 ( -0.025222  0.025271 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.9833e-06 ( -1.19687e-07  1.10803e-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)  = 1.30e-06
S(50-100 keV) = 1.39e-06

T90 vs. Hardness ratio plot

T90                                   = 49.039999961853 sec.
Hardness ratio (energy fluence ratio) = 1.06923

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.07935
Count Ratio (50-100 keV) / (15-25 keV) = 0.608101

Mask shadow pattern

IMX = 3.000499177724512E-01, IMY = -1.880177922912658E-01

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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

Plot creation:
Mon Oct 24 12:40:37 EDT 2022