batgrbproduct analysis for trigger=1033328

batgrbproduct Analysis for Trigger=1033328

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): Sat Jul 30 00:02:39 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1033328
======================================================================

  Trigger: 01033328      Segment: 000

  BAT Trigger Time: 635348146.176   [s; MET]
      Trigger Stop: 635348147.2   [s; MET]
               UTC: 2021-02-18T13:35:19.647260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 47.2910601557218   Dec: 35.287132551004  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.16
     Image Trigger?:     NO
     Rate S/N Ratio:     7.07106781186548  [ if not an image trigger ]
     Image S/N Ratio:    7.16

  Flight Position:   [ source = BAT ]
    RA: 47.2910601557218   Dec: 35.287132551004  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 47.3203263045052   Dec: 35.3228320461168  [deg; J2000]  
        { 03h 09m 16.9s , +35d 19' 22.2" }
         +/- 1.41716551781561 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.548509073953229 [arcmin] (formal 1-sigma fit error)
    SNR: 18.4843111522042
 
  Angular difference between Flight and Ground position is 2.577129 arcmin
 
  Partial Coding Fraction: 0.578125    [ including projection effects ]

  Duration
     T90: 215.927999973297 +/- 30.2537176723276
        Measured from: -3.86000001430511
                   to: 212.067999958992     [s; relative to TRIGTIME]
     T50: 96.3799999952316 +/- 13.7069168189479
        Measured from: 13.9639999866486
                   to: 110.34399998188     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0920000076293945     
                   to: 1.09200000762939     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -13.4759999513626     
                   to: 246.583999991417     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.609231   2.474646   1.912669   0.371546
           0.138677   0.142622   0.122790   0.101988 [error]
 Peak      0.015597   0.058769   0.041593   0.018091
           0.009040   0.009840   0.008691   0.006907 [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 5.57e-07 1.04e-06 1.50e-06 4.55e-06 4.24e-06 7.65e-06   erg/cm2
              Error 6.29e-08 7.21e-08 1.20e-07 7.85e-07 2.97e-07 8.72e-07   erg/cm2
Peak flux Power-law 2.66e-01 3.33e-01 3.04e-01 4.84e-01 1.07e+00 1.39e+00   ph/cm2/s
              Error 1.15e-01 8.89e-02 6.63e-02 2.29e-01 2.36e-01 2.91e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.94e-07 1.11e-06 1.56e-06 1.92e-06 4.06e-06 5.07e-06   erg/cm2
              Error 7.51e-08 8.82e-08 1.36e-07 1.13e-06 3.24e-07 1.15e-06   erg/cm2
Peak flux Cutoff-PL 2.74e-01 3.33e-01 3.03e-01 5.01e-01 1.07e+00 1.40e+00   ph/cm2/s
              Error 1.23e-01 6.96e-02 7.10e-02 -------- 2.39e-01 2.83e-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    1.475    0.109    -      -           1.72e-03 1.11e-04   54.860 57
CPL   0.816    0.481      91.6   52.8      3.65e-03 2.10e-03   48.420 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.131    0.365    -      -           9.18e-03 1.93e-03   43.940 57
CPL   2.380    3.648     124.5    0.0      1.21e-03 0.00e+00   43.420 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: 120.768000 sec.
T50 in the 50-300 keV band: 77.184000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  260.060  -13.476  246.584
T90   215.928   -3.860  212.068
T50    96.380   13.964  110.344
Peak    1.000    0.092    1.092

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Special notes of this burst

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   47.3203    35.3228   0.0104    36.2151   -25.0657         5.3449000     18.484 TRIG_01033328                 
 
Foreground time interval of the image:
-13.476 166.725 (delta_t = 180.201 [sec])
Background time interval of the image:
-239.176 -13.476 (delta_t = 225.700 [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 1.024000

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 1.024000

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 1.024000

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  -13.476 sec. to  246.584 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.47483     ( -0.108997   0.10893 )
Norm@50keV  : 1.71593E-03    ( -0.000111048   0.000110934 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.86     using 59 bins.
 Reduced chi-squared = 0.962456
# Null hypothesis probability of 5.56e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 260.1 sec: 0.212803 ( -0.01424  0.014269 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.25245e-06 ( -2.95687e-07  2.97326e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -13.476 sec. to  246.584 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.815625     ( -0.507698   0.453595 )
Epeak [keV] : 91.5890      ( -20.3305 85.175 )
Norm@50keV  : 3.64610E-03    ( -0.00144818   0.00276123 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   48.42     using 59 bins.
 Reduced chi-squared = 0.864643
# Null hypothesis probability of 7.54e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 260.1 sec: 0.206685 ( -0.014865  0.014868 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.0695e-06 ( -3.2339e-07  3.23897e-07 ) ergs/cm2

Band function

Time interval is from  -13.476 sec. to  246.584 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]    : 15.5749  (-1.19076  1.31223)
R^2/D10^2   : 2.14869E-02  (-0.005383   0.00704665)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   85.85     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.04e-03 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.819e-07   3.387e-08
25- 50  1.159e-06   1.009e-07
50-150  1.944e-06   2.215e-07
15-150  3.385e-06   2.601e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-35.8338      -200)
Norm        : 0.876740       (-0.0562686     0.0562686)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.89     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.67e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.699e-07   4.214e-08
25- 50  1.096e-06   9.572e-08
50-150  2.404e-06   5.973e-07
15-150  4.070e-06   5.657e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.85495        (-1.88025      2.14146)
R1^2/D10^2  : 0.136171        (-0.0680157      0.186513)
kT2 [keV]   : 25.5639        (-4.99106      10.6077)
R2^2/D10^2  : 2.85201E-03    (-0.00205141   0.00386542)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.87     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.41e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.729e-07   1.397e-07
25- 50  1.138e-06   3.223e-07
50-150  2.469e-06   1.106e-06
15-150  4.080e-06   1.237e-06

Peak spectrum fit

Power-law model

Time interval is from    0.092 sec. to    1.092 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.13133     ( -0.378532   0.350513 )
Norm@50keV  : 9.18302E-03    ( -0.00193783   0.00191446 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.94     using 59 bins.
 Reduced chi-squared = 0.770877
# Null hypothesis probability of 8.98e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.06864 ( -0.23561  0.23714 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.50824e-08 ( -2.02861e-08  2.0332e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.092 sec. to    1.092 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.37968     ( -2.31095   4.98502 )
Epeak [keV] : 124.514      (   )
Norm@50keV  : 1.21184E-03    (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.42     using 59 bins.
 Reduced chi-squared = 0.775357
# Null hypothesis probability of 8.90e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.07026 ( -0.239977  0.23811 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.53059e-08 ( -2.14339e-08  1.96761e-08 ) ergs/cm2

Band function

Time interval is from    0.092 sec. to    1.092 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]    : 23.3808  (-7.05667  10.5391)
R^2/D10^2   : 2.96137E-02  (-0.0201056   0.0659347)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.97     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.64e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.910e-09   1.282e-09
25- 50  1.594e-08   7.300e-09
50-150  6.502e-08   2.558e-08
15-150  8.387e-08   3.375e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-65.2059      -200)
Norm        : 4.54848       (-0.962084     0.962084)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   48.29     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.88e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.133e-08   6.705e-09
25- 50  2.179e-08   1.306e-08
50-150  4.779e-08   2.760e-08
15-150  8.090e-08   4.674e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.59938        (-2.77372      4.16498)
R1^2/D10^2  : 0.570647        (-0.418479      1.55865)
kT2 [keV]   : 47.7903        (-20.5534      -47.6795)
R2^2/D10^2  : 2.91455E-03    (-0.00269883   0.0127227)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   41.57     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.10e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.762e-09   5.230e-09
25- 50  2.121e-08   1.244e-08
50-150  6.810e-08   3.763e-08
15-150  9.807e-08   4.873e-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: 1.46218     ( -0.106644   0.106611 )
Norm@50keV  : 2.18206E-03    ( -0.000137405   0.000137311 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.63     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.14e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 180.2 sec: 0.269731 ( -0.0176982  0.0177368 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.75439e-06 ( -2.53812e-07  2.5479e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.751762     ( -0.499647   0.448058 )
Epeak [keV] : 91.7799      ( -18.8285 65.557 )
Norm@50keV  : 4.82482E-03    ( -0.00186266   0.00345228 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.87     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.56e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 180.2 sec: 0.260834 ( -0.018554  0.018565 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.59847e-06 ( -2.743e-07  2.74571e-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)  = 1.04e-06
S(50-100 keV) = 1.50e-06

T90 vs. Hardness ratio plot

T90                                   = 215.927999973297 sec.
Hardness ratio (energy fluence ratio) = 1.44231

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.53778
Count Ratio (50-100 keV) / (15-25 keV) = 1.18856

Mask shadow pattern

IMX = 6.633276817333866E-01, IMY = 3.102406262588234E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

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:
-239.176000 -13.476000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6339  22.0300    0.3  18.4   45.9   8.9454  33.5    0.9	Crab                          
 93.8143  54.7820    2.6  50.5   26.5   3.8504   4.4 ------	UNKNOWN                       
101.6296 -33.6447    2.6  49.5  158.2   3.6921   4.4 ------	UNKNOWN                       
 65.4508  31.4452    2.7  25.0   -3.3   1.0889   4.3 ------	UNKNOWN                       
 41.8264   6.2313    2.9  30.3  -79.5   1.5687   3.9 ------	UNKNOWN                       
 39.3328 -29.1919    3.0  48.3 -129.9   5.1198   3.9 ------	UNKNOWN                       
 26.8267  21.5600    3.2  46.1  -56.3   4.3382   3.6 ------	UNKNOWN

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

Time interval of the image:
-13.476000 166.724600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6648  21.8733    5.6  18.2   46.3   0.4585   2.1    8.6	Crab                          
 75.9552 -51.4909    2.7  58.9 -172.0   5.8761   4.3 ------	UNKNOWN                       
 47.3203  35.3228    0.6  36.2  -25.1   5.3447  18.5 ------	UNKNOWN                       
 39.5539 -21.7940    1.9  43.3 -122.3   4.4298   6.0 ------	UNKNOWN                       
 30.1760   8.8351    1.8  41.7  -74.2   4.8838   6.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
300.924600 962.967800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4606  35.3433   31.4  46.0  -12.3   0.3229   0.4    0.2	Her X-1                       
237.8488  25.4738    4.0  54.0    8.0   5.4884   2.9 ------	UNKNOWN                       
 76.7333  42.1584    4.2  56.9  177.3   7.4258   2.8 ------	UNKNOWN                       
242.4721  28.3270    2.9  51.5    2.5   5.0642   4.0 ------	UNKNOWN                       
356.8326  55.5744    2.6  43.9 -116.5  10.7066   4.5 ------	UNKNOWN                       
 14.2280  52.4704    3.7  48.4 -129.9   9.1380   3.2 ------	UNKNOWN

Plot creation:
Sun Nov 13 11:35:54 EST 2022