batgrbproduct analysis for trigger=1102281

batgrbproduct Analysis for Trigger=1102281

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): Sun Oct 23 23:27:30 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1102281
======================================================================

  Trigger: 01102281      Segment: 000

  BAT Trigger Time: 671438239.168   [s; MET]
      Trigger Stop: 671438247.36   [s; MET]
               UTC: 2022-04-12T06:36:50.220220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 123.968083384208   Dec: 30.3220864406175  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.2
     Image Trigger?:     NO
     Rate S/N Ratio:     10.0498756211209  [ if not an image trigger ]
     Image S/N Ratio:    7.2

  Flight Position:   [ source = BAT ]
    RA: 123.968083384208   Dec: 30.3220864406175  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 123.970479260828   Dec: 30.3388976897148  [deg; J2000]  
        { 08h 15m 52.9s , +30d 20' 20.0" }
         +/- 1.92918608985089 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.833783516843582 [arcmin] (formal 1-sigma fit error)
    SNR: 11.8970986591548
 
  Angular difference between Flight and Ground position is 1.016278 arcmin
 
  Partial Coding Fraction: 0.9296875    [ including projection effects ]

  Duration
     T90: 44.2599999904633 +/- 7.82742474991122
        Measured from: -8.1360000371933
                   to: 36.12399995327     [s; relative to TRIGTIME]
     T50: 21.4599999189377 +/- 6.70841859246074
        Measured from: 0.644000053405762
                   to: 22.1039999723434     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 6.87600004673004     
                   to: 7.87600004673004     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -11.9399999380112     
                   to: 40.2360000610352     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.247515   0.469593   0.258136   0.058753
           0.043700   0.044929   0.039043   0.033699 [error]
 Peak      0.019332   0.025097   0.017726   0.006188
           0.006270   0.006410   0.005527   0.004646 [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 8.66e-08 1.55e-07 2.12e-07 6.00e-07 6.11e-07 1.05e-06   erg/cm2
              Error 1.68e-08 1.96e-08 3.69e-08 2.15e-07 8.91e-08 2.49e-07   erg/cm2
Peak flux Power-law 1.75e-01 1.76e-01 1.25e-01 1.41e-01 5.32e-01 6.17e-01   ph/cm2/s
              Error 7.95e-02 4.96e-02 4.50e-02 1.08e-01 1.43e-01 1.71e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.57e-08 1.75e-07 2.16e-07 1.40e-07 5.58e-07 6.05e-07   erg/cm2
              Error 1.95e-08 2.68e-08 4.35e-08 2.08e-07 9.84e-08 2.29e-07   erg/cm2
Peak flux Cutoff-PL 1.79e-01 1.76e-01 1.24e-01 1.50e-01 5.34e-01 6.19e-01   ph/cm2/s
              Error 8.29e-02 5.40e-02 4.59e-02 -------- 1.47e-01 2.24e-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    1.547    0.210    -      -           1.25e-03 1.65e-04   57.250 57
CPL   0.465    1.051      65.5   56.5      4.74e-03 1.03e-02   53.030 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.499    0.501    -      -           4.26e-03 1.20e-03   56.170 57
CPL   1.490    0.592    9999.3    0.0      4.28e-03 1.85e-02   56.170 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: 15.680000 sec.
T50 in the 50-300 keV band: 7.744000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   52.176  -11.940   40.236
T90    44.260   -8.136   36.124
T50    21.460    0.644   22.104
Peak    1.000    6.876    7.876

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
  123.9705    30.3389   0.0162    16.3717    29.6809         1.0779759     11.897 TRIG_01102281                 
 
Foreground time interval of the image:
-11.940  40.236 (delta_t =  52.176 [sec])
Background time interval of the image:
-239.168 -11.940 (delta_t = 227.228 [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

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

8 ms binning

From T100_start-3 s to T100_start+3 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

2 ms binning

From T100_start-1 s to T100_start+1 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

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  -11.940 sec. to   40.236 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54743     ( -0.208003   0.212775 )
Norm@50keV  : 1.24582E-03    ( -0.000166159   0.000164327 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.25     using 59 bins.
 Reduced chi-squared = 1.00439
# Null hypothesis probability of 4.66e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 52.18 sec: 0.157601 ( -0.019695  0.019706 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.12285e-07 ( -8.83543e-08  8.99197e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from  -11.940 sec. to   40.236 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.465204     ( -1.18658   0.91575 )
Epeak [keV] : 65.5312      ( -14.8832 98.0619 )
Norm@50keV  : 4.73945E-03    ( -0.00473945   0.0158465 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.03     using 59 bins.
 Reduced chi-squared = 0.946964
# Null hypothesis probability of 5.88e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 52.18 sec: 0.151243 ( -0.020414  0.020419 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.56014e-07 ( -9.59762e-08  1.00727e-07 ) ergs/cm2

Band function

Time interval is from  -11.940 sec. to   40.236 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]    : 13.2213  (-1.80651  2.17696)
R^2/D10^2   : 2.84795E-02  (-0.0119745   0.0197174)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   59.48     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.85e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.507e-08   1.237e-08
25- 50  1.931e-07   3.520e-08
50-150  2.155e-07   6.079e-08
15-150  4.637e-07   7.417e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 181.054       (-79.2502      -177.821)
Norm        : 0.647363       (-0.0827429     0.0962344)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.03     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.49e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.513e-08   4.696e-08
25- 50  1.619e-07   8.698e-08
50-150  3.434e-07   1.917e-07
15-150  5.904e-07   3.180e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.51561        (-3.73688      3.37692)
R1^2/D10^2  : 8.61066E-02        (-0.0521309      0.352102)
kT2 [keV]   : 24.4810        (-19.6242      58.7087)
R2^2/D10^2  : 1.99067E-03    (-0.00200466   0.0124733)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   52.36     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.76e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.241e-08   4.214e-08
25- 50  1.809e-07   9.914e-08
50-150  3.118e-07   1.775e-07
15-150  5.652e-07   2.972e-07

Peak spectrum fit

Power-law model

Time interval is from    6.876 sec. to    7.876 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49858     ( -0.494537   0.507033 )
Norm@50keV  : 4.26320E-03    ( -0.00122339   0.00118176 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.17     using 59 bins.
 Reduced chi-squared = 0.985439
# Null hypothesis probability of 5.06e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.532023 ( -0.142778  0.142994 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.04585e-08 ( -1.24629e-08  1.28676e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    6.876 sec. to    7.876 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49028     ( -0.4951   0.689802 )
Epeak [keV] : 9999.26      ( -9999.36 -9999.36 )
Norm@50keV  : 4.27874E-03    ( -0.00122949   0.0357934 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.17     using 59 bins.
 Reduced chi-squared = 1.00304
# Null hypothesis probability of 4.69e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.534059 ( -0.149554  0.143795 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.06799e-08 ( -1.36061e-08  9.19132e-09 ) ergs/cm2

Band function

Time interval is from    6.876 sec. to    7.876 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]    : 15.4388  (-5.08607  7.57301)
R^2/D10^2   : 5.35371E-02  (-0.0532791   0.161633)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.91     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.37e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.658e-09   1.636e-09
25- 50  1.084e-08   6.510e-09
50-150  1.781e-08   1.111e-08
15-150  3.131e-08   1.696e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-199.363      -199.363)
Norm        : 2.17014       (-0.577977     0.578183)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.40     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.97e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.404e-09   3.272e-09
25- 50  1.039e-08   6.240e-09
50-150  2.280e-08   1.383e-08
15-150  3.860e-08   2.292e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.08881        (-3.06872      7.17806)
R1^2/D10^2  : 1.86221        (-1.72102      205.471)
kT2 [keV]   : 23.5900        (-9.28886      -23.5967)
R2^2/D10^2  : 1.06155E-02    (-0.0102879   0.0359813)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.88     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.41e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.914e-09   3.525e-09
25- 50  9.130e-09   4.723e-09
50-150  2.430e-08   1.508e-08
15-150  3.934e-08   2.061e-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: 1.54743     ( -0.208003   0.212775 )
Norm@50keV  : 1.24582E-03    ( -0.000166159   0.000164327 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.25     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.66e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 52.18 sec: 0.157596 ( -0.019694  0.0197054 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.12202e-07 ( -8.83079e-08  8.99521e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.465203     ( -1.18658   0.915751 )
Epeak [keV] : 65.5311      ( -14.8832 98.062 )
Norm@50keV  : 4.73946E-03    ( -0.00473946   0.0158465 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.03     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.88e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 52.18 sec: 0.151227 ( -0.020409  0.020415 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.56207e-07 ( -9.60931e-08  1.00827e-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)  = 1.55e-07
S(50-100 keV) = 2.12e-07

T90 vs. Hardness ratio plot

T90                                   = 44.2599999904633 sec.
Hardness ratio (energy fluence ratio) = 1.36774

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.89723
Count Ratio (50-100 keV) / (15-25 keV) = 1.04291

Mask shadow pattern

IMX = 2.552340665624958E-01, IMY = -1.454701450132551E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

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:
-239.168000 -11.940000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6424  22.0241    0.6  29.9  -73.6   9.1538  20.5    0.8	Crab

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

Time interval of the image:
-11.940000 40.236000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.4549  22.1105    0.0  30.1  -73.4   0.4176   2.8   11.5	Crab                          
123.9704  30.3389    1.0  16.4   29.7   1.0780  11.9 ------	UNKNOWN                       
 96.0116  31.3919    2.3  22.8  -44.7   0.4782   5.0 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
105.332600 653.893200
654.832000 659.167400
660.832000 838.671800
840.832000 963.017500
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6367  22.0053    1.1  36.9 -107.3  27.0476  10.9    0.6	Crab                          
196.4775  68.2167    7.3  55.6   11.3   5.2505   1.6 ------	UNKNOWN                       
117.7374  49.5448    2.8  19.8  -26.1   3.8940   4.1 ------	UNKNOWN

Plot creation:
Mon Oct 24 05:02:25 EDT 2022