batgrbproduct analysis for trigger=1073893

batgrbproduct Analysis for Trigger=1073893

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 00:28:35 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1073893
======================================================================

  Trigger: 01073893      Segment: 000

  BAT Trigger Time: 653704141.312   [s; MET]
      Trigger Stop: 653704141.568   [s; MET]
               UTC: 2021-09-19T00:28:33.559600    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 80.229910067484   Dec: 1.27427647843543  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.91
     Image Trigger?:     NO
     Rate S/N Ratio:     24.2899156029822  [ if not an image trigger ]
     Image S/N Ratio:    8.91

  Flight Position:   [ source = BAT ]
    RA: 80.229910067484   Dec: 1.27427647843543  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 80.2422685419908   Dec: 1.28556259895594  [deg; J2000]  
        { 05h 20m 58.1s , +01d 17' 08.0" }
         +/- 2.01636502751695 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.12106556242724 [arcmin] (formal 1-sigma fit error)
    SNR: 11.169136158686
 
  Angular difference between Flight and Ground position is 1.004050 arcmin
 
  Partial Coding Fraction: 0.5    [ including projection effects ]

  Duration
     T90: 0.163999915122986 +/- 0.0312410238573899
        Measured from: 0.0640000104904175
                   to: 0.227999925613403     [s; relative to TRIGTIME]
     T50: 0.0759999752044678 +/- 0.0256125023115591
        Measured from: 0.107999920845032
                   to: 0.1839998960495     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.354000091552734     
                   to: 0.645999908447266     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.0519999265670776     
                   to: 0.235999941825867     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.041528   0.050042   0.046457   0.020371
           0.006644   0.007824   0.008006   0.006798 [error]
 Peak      0.041603   0.059485   0.055106   0.024258
           0.012420   0.013559   0.013228   0.012569 [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 1.28e-08 2.24e-08 3.02e-08 8.28e-08 8.76e-08 1.48e-07   erg/cm2
              Error 3.18e-09 3.68e-09 6.89e-09 3.85e-08 1.66e-08 4.49e-08   erg/cm2
Peak flux Power-law 4.23e-01 4.76e-01 3.84e-01 5.15e-01 1.47e+00 1.80e+00   ph/cm2/s
              Error 1.82e-01 1.24e-01 1.08e-01 3.12e-01 3.46e-01 4.32e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.09e-08 1.53e-08 1.65e-08 4.05e-08 5.35e-08 8.35e-08   erg/cm2
              Error 3.95e-09 1.48e-08 4.96e-09 1.48e-08 1.72e-08 1.99e-08   erg/cm2
Peak flux Cutoff-PL 4.27e-01 4.74e-01 3.82e-01 5.42e-01 1.48e+00 1.83e+00   ph/cm2/s
              Error 3.10e-01 1.36e-01 1.21e-01 -------- 3.57e-01 5.26e-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    1.577    0.273    -      -           5.07e-02 8.86e-03   40.400 57
CPL   1.145    0.889     107.6  -29.0      8.22e-02 1.38e-01   39.750 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.310    0.422    -      -           1.23e-02 2.83e-03   49.630 57
CPL   2.713    2.206     220.5    0.0      1.83e-03 0.00e+00   48.850 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: 0.192000 sec.
T50 in the 50-300 keV band: 0.064000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.184    0.052    0.236
T90     0.164    0.064    0.228
T50     0.076    0.108    0.184
Peak    1.000   -0.354    0.646

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
   80.2423     1.2856   0.0172    42.6196   -12.3466         0.1601929     11.169 TRIG_01073893                 
 
Foreground time interval of the image:
  0.052   0.236 (delta_t =   0.184 [sec])
Background time interval of the image:
-239.312   0.052 (delta_t = 239.364 [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 0.256000

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 0.256000

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 0.256000

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    0.052 sec. to    0.236 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57652     ( -0.261337   0.284584 )
Norm@50keV  : 5.07332E-02    ( -0.00895201   0.0087584 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   40.40     using 59 bins.
 Reduced chi-squared = 0.708772
# Null hypothesis probability of 9.53e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 0.184 sec: 6.47313 ( -1.05376  1.0541 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.75726e-08 ( -1.654e-08  1.66754e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.052 sec. to    0.236 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.14456     ( -1.10238   0.676514 )
Epeak [keV] : 107.595      ( -49.5811 -107.59 )
Norm@50keV  : 8.22471E-02    ( -0.0822497   0.194258 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   39.75     using 59 bins.
 Reduced chi-squared = 0.709821
# Null hypothesis probability of 9.51e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 0.184 sec: 6.41966 ( -1.06217  1.06068 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.36189e-08 ( -1.95375e-08  1.49612e-08 ) ergs/cm2

Band function

Time interval is from    0.052 sec. to    0.236 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]    : 15.0689  (-3.20418  4.05672)
R^2/D10^2   : 0.738701  (-0.408946   0.921893)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.98     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.34e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.457e-09   1.910e-09
25- 50  2.576e-08   6.670e-09
50-150  3.989e-08   1.525e-08
15-150  7.212e-08   1.703e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.324       (-102.783      -199.341)
Norm        : 26.5605       (-4.28566     4.29978)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   39.83     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.59e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.217e-08   7.098e-09
25- 50  2.341e-08   1.297e-08
50-150  5.134e-08   2.853e-08
15-150  8.692e-08   4.980e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.36297        (-2.27473      5.30849)
R1^2/D10^2  : 39.4464        (-36.7239      160.639)
kT2 [keV]   : 21.6068        (-5.88575      14.5461)
R2^2/D10^2  : 0.188118    (-0.161991   0.412998)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   39.47     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.43e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.292e-08   6.944e-09
25- 50  2.032e-08   1.015e-08
50-150  5.507e-08   2.940e-08
15-150  8.831e-08   4.248e-08

Peak spectrum fit

Power-law model

Time interval is from   -0.354 sec. to    0.646 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31044     ( -0.421185   0.422539 )
Norm@50keV  : 1.23179E-02    ( -0.00283687   0.0028283 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.63     using 59 bins.
 Reduced chi-squared = 0.870702
# Null hypothesis probability of 7.45e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.47244 ( -0.34498  0.34645 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.21431e-07 ( -3.11638e-08  3.1639e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.354 sec. to    0.646 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.71290     ( -3.06167   1.35011 )
Epeak [keV] : 220.521      (   )
Norm@50keV  : 1.83020E-03    (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   48.85     using 59 bins.
 Reduced chi-squared = 0.872321
# Null hypothesis probability of 7.40e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.47622 ( -0.36664  0.3471 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.21776e-07 ( -3.42595e-08  2.7727e-08 ) ergs/cm2

Band function

Time interval is from   -0.354 sec. to    0.646 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]    : 17.2408  (-4.41096  6.74129)
R^2/D10^2   : 0.107848  (-0.072102   0.185318)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.59     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.04e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.503e-09   3.019e-09
25- 50  2.910e-08   1.498e-08
50-150  6.202e-08   3.461e-08
15-150  9.762e-08   4.106e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-97.1073      -199.363)
Norm        : 6.07734       (-1.40468     1.40473)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.77     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.06e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.513e-08   9.050e-09
25- 50  2.911e-08   1.711e-08
50-150  6.385e-08   3.793e-08
15-150  1.081e-07   6.330e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.83238        (-1.68821      14.7287)
R1^2/D10^2  : 1596.13        (-1249.79      -1250.7)
kT2 [keV]   : 19.2207        (-5.23696      9.62948)
R2^2/D10^2  : 7.18863E-02    (-0.0627791   0.0827428)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.35     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.89e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

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: 1.57652     ( -0.261337   0.284584 )
Norm@50keV  : 5.07332E-02    ( -0.00895201   0.0087584 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   40.40     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.53e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 0.184 sec: 6.47292 ( -1.05371  1.05405 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.75616e-08 ( -1.65376e-08  1.66876e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.14468     ( -1.10238   0.67652 )
Epeak [keV] : 107.610      ( -49.5814 -107.59 )
Norm@50keV  : 8.22362E-02    ( -0.0822496   0.194258 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   39.75     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.51e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 0.184 sec: 6.41887 ( -1.06196  1.06046 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.72114e-08 ( -1.70307e-08  1.70134e-08 ) 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)  = 2.24e-08
S(50-100 keV) = 3.02e-08

T90 vs. Hardness ratio plot

T90                                   = 0.163999915122986 sec.
Hardness ratio (energy fluence ratio) = 1.34821

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.20502
Count Ratio (50-100 keV) / (15-25 keV) = 1.11869

Mask shadow pattern

IMX = 8.988959412444540E-01, IMY = 1.967562249808670E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000

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:
-239.312000 0.052000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6328  22.0115    0.5  30.9  -42.0  10.4923  21.7    0.2	Crab                          
 40.2931   0.8442    2.9  34.8   52.8   2.4503   4.0 ------	UNKNOWN

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

Time interval of the image:
0.052000 0.236000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.7709  22.0775    8.4  31.0  -42.2   0.0163   1.4    8.5	Crab                          
348.3355  38.8512    2.1  49.7  148.2   0.1705   5.5 ------	UNKNOWN                       
 80.2424   1.2856    1.0  42.6  -12.3   0.1601  11.2 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
80.788600 962.748100
1285.688000 1375.790400
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6357  22.0150    0.3  21.0 -169.3  40.0605  33.9    0.1	Crab                          
 43.4723  -8.4313    3.7  37.9   76.3  12.8674   3.2 ------	UNKNOWN                       
 66.3651 -20.3486    2.6  25.5   33.2   5.2119   4.4 ------	UNKNOWN                       
 81.8026 -24.3867    3.5  25.7   -1.5   3.3998   3.3 ------	UNKNOWN                       
106.5941 -48.0863    3.2  54.4  -19.6  11.9327   3.6 ------	UNKNOWN                       
105.9571  20.5816    3.0  31.7 -127.5   6.5197   3.8 ------	UNKNOWN                       
121.1070   7.9544    3.4  41.3  -98.8  16.8106   3.5 ------	UNKNOWN

Plot creation:
Mon Oct 24 05:18:56 EDT 2022