batgrbproduct analysis for trigger=1195733

batgrbproduct Analysis for Trigger=1195733

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): Tue Dec 26 22:45:24 EST 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1195733
======================================================================

  Trigger: 01195733      Segment: 000

  BAT Trigger Time: 721344007.168   [s; MET]
      Trigger Stop: 721344009.216   [s; MET]
               UTC: 2023-11-10T21:19:34.821020    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 356.296023258114   Dec: 82.6211432242904  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.31
     Image Trigger?:     NO
     Rate S/N Ratio:     38.0525951808809  [ if not an image trigger ]
     Image S/N Ratio:    12.31

  Flight Position:   [ source = BAT ]
    RA: 356.296023258114   Dec: 82.6211432242904  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 356.254642187074   Dec: 82.6280995645958  [deg; J2000]  
        { 23h 45m 01.1s , +82d 37' 41.2" }
         +/- 1.2495549652113 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.468828779499248 [arcmin] (formal 1-sigma fit error)
    SNR: 22.1256699967343
 
  Angular difference between Flight and Ground position is 0.525158 arcmin
 
  Partial Coding Fraction: 0.34375    [ including projection effects ]

  Duration
     T90: 12.0119999647141 +/- 3.46746825399134
        Measured from: -0.611999988555908
                   to: 11.3999999761581     [s; relative to TRIGTIME]
     T50: 4.94799995422363 +/- 1.04785493541221
        Measured from: 1.06000006198883
                   to: 6.00800001621246     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.636000037193298     
                   to: 1.6360000371933     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.40399992465973     
                   to: 15.0759999752045     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.592913   0.761665   0.679117   0.226784
           0.048746   0.052218   0.046379   0.038231 [error]
 Peak      0.076340   0.119071   0.160686   0.086373
           0.013292   0.015415   0.016324   0.013257 [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 1.81e-07 3.54e-07 5.36e-07 1.75e-06 1.50e-06 2.82e-06   erg/cm2
              Error 2.29e-08 2.69e-08 4.57e-08 3.28e-07 1.13e-07 3.59e-07   erg/cm2
Peak flux Power-law 6.36e-01 9.27e-01 1.01e+00 2.04e+00 3.20e+00 4.61e+00   ph/cm2/s
              Error 1.62e-01 1.44e-01 1.23e-01 5.44e-01 3.88e-01 6.08e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.81e-07 3.54e-07 5.47e-07 1.75e-06 1.50e-06 2.79e-06   erg/cm2
              Error 2.01e-08 2.94e-08 4.96e-08 5.12e-07 1.17e-07 6.14e-07   erg/cm2
Peak flux Cutoff-PL 6.11e-01 9.35e-01 1.03e+00 1.75e+00 3.18e+00 4.32e+00   ph/cm2/s
              Error 1.81e-01 1.52e-01 1.52e-01 6.19e-01 3.92e-01 9.22e-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    1.405    0.120    -      -           9.45e-03 6.53e-04   60.790 57
CPL   1.401    0.280    9997.5    0.0      9.48e-03 3.29e-03   60.790 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.883    0.205    -      -           2.79e-02 3.38e-03   53.440 57
CPL   0.732    0.695     501.8    0.0      3.24e-02 2.43e-02   53.330 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: 8.512000 sec.
T50 in the 50-300 keV band: 3.072000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   16.480   -1.404   15.076
T90    12.012   -0.612   11.400
T50     4.948    1.060    6.008
Peak    1.000    0.636    1.636

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
  356.2546    82.6281   0.0087    38.7939   149.6650         2.3323629     22.126 TRIG_01195733                 
 
Foreground time interval of the image:
 -1.404  15.076 (delta_t =  16.480 [sec])
Background time interval of the image:
-133.067  -1.404 (delta_t = 131.663 [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 2.048000

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 2.048000

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 2.048000

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   -1.404 sec. to   15.076 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40462     ( -0.120272   0.119653 )
Norm@50keV  : 9.45068E-03    ( -0.000652983   0.000652254 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.79     using 59 bins.
 Reduced chi-squared = 1.06649
# Null hypothesis probability of 3.41e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 16.48 sec: 1.15215 ( -0.08278  0.08296 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.50369e-06 ( -1.1275e-07  1.13341e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -1.404 sec. to   15.076 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40148     ( -0.390268   0.169476 )
Epeak [keV] : 9997.54      ( -9997.42 -9997.42 )
Norm@50keV  : 9.48489E-03    ( -0.000655329   0.00591799 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.79     using 59 bins.
 Reduced chi-squared = 1.08554
# Null hypothesis probability of 3.08e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 16.48 sec: 1.15150 ( -0.0849  0.08376 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.50223e-06 ( -1.19312e-07  1.14645e-07 ) ergs/cm2

Band function

Time interval is from   -1.404 sec. to   15.076 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]    : 16.9552  (  )
R^2/D10^2   : 8.55205E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  127.90     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.31e-07 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.258e-08   1.177e-08
25- 50  3.646e-07   3.650e-08
50-150  7.477e-07   9.830e-08
15-150  1.195e-06   1.087e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-24.9844      -200)
Norm        : 4.78271       (-0.33046     0.33046)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.45     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.84e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.963e-07   1.516e-08
25- 50  3.775e-07   3.494e-08
50-150  8.280e-07   2.469e-07
15-150  1.402e-06   2.422e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.00133        (-1.04587      1.25576)
R1^2/D10^2  : 1.28168        (-0.562267      1.02655)
kT2 [keV]   : 32.0228        (-5.73263      9.64884)
R2^2/D10^2  : 8.33662E-03    (-0.00461708   0.00769939)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   52.97     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.52e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.875e-07   4.272e-08
25- 50  3.618e-07   7.770e-08
50-150  9.807e-07   3.050e-07
15-150  1.530e-06   3.804e-07

Peak spectrum fit

Power-law model

Time interval is from    0.636 sec. to    1.636 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.882562     ( -0.209456   0.200901 )
Norm@50keV  : 2.78518E-02    ( -0.00339965   0.00336629 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.44     using 59 bins.
 Reduced chi-squared = 0.937544
# Null hypothesis probability of 6.09e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 3.19647 ( -0.38754  0.38839 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.14746e-07 ( -3.94309e-08  3.95531e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.636 sec. to    1.636 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.731923     ( -0.86841   0.521211 )
Epeak [keV] : 501.777      ( -501.784 -501.784 )
Norm@50keV  : 3.23943E-02    ( -0.00713674   0.0415057 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.33     using 59 bins.
 Reduced chi-squared = 0.952321
# Null hypothesis probability of 5.77e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 3.18370 ( -0.3927  0.39093 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.13437e-07 ( -4.05015e-08  3.9218e-08 ) ergs/cm2

Band function

Time interval is from    0.636 sec. to    1.636 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]    : 24.5527  (-3.74903  4.88944)
R^2/D10^2   : 8.47311E-02  (-0.0358565   0.0567242)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   64.95     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  8.958e-09   2.396e-09
25- 50  5.035e-08   1.023e-08
50-150  2.256e-07   4.090e-08
15-150  2.849e-07   4.575e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-22.8377      -200)
Norm        : 12.7107       (-1.60258     1.60258)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   82.32     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.58e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.164e-08   1.794e-08
25- 50  6.086e-08   3.407e-08
50-150  1.335e-07   7.350e-08
15-150  2.260e-07   1.247e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.01450        (-4.08491      4.56675)
R1^2/D10^2  : 0.954817        (-0.709722      5.7345)
kT2 [keV]   : 40.0663        (-13.3695      -40.4713)
R2^2/D10^2  : 1.69752E-02    (-0.0157289   0.0413473)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.27     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.41e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.863e-08   1.086e-08
25- 50  5.618e-08   3.032e-08
50-150  2.419e-07   1.305e-07
15-150  3.167e-07   1.630e-07

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: 1.40462     ( -0.120272   0.119653 )
Norm@50keV  : 9.45068E-03    ( -0.000652983   0.000652254 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.79     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.41e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 16.48 sec: 1.15213 ( -0.0827754  0.0829557 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.50351e-06 ( -1.12875e-07  1.13495e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40148     ( -0.392622   0.166577 )
Epeak [keV] : 9997.85      ( -9997.76 -9997.76 )
Norm@50keV  : 9.48489E-03    ( -0.000655328   0.00591799 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.79     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.08e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 16.48 sec: 1.15107 ( -0.04327  0.08359 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.50531e-06 ( -1.2125e-07  1.11365e-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)  = 3.54e-07
S(50-100 keV) = 5.36e-07

T90 vs. Hardness ratio plot

T90                                   = 12.0119999647141 sec.
Hardness ratio (energy fluence ratio) = 1.51412

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.28462
Count Ratio (50-100 keV) / (15-25 keV) = 1.14539

Mask shadow pattern

IMX = -6.937893841732251E-01, IMY = -4.059862301839708E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

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:
-133.067410 -1.404000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
168.3586  47.9006    3.0  10.9  -16.0   0.7631   3.8 ------	UNKNOWN

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

Time interval of the image:
-1.404000 15.076000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
356.2546  82.6281    0.5  38.8  149.7   2.3323  22.1 ------	UNKNOWN                       
270.2835  79.2854    2.4  34.5  169.5   0.3322   4.7 ------	UNKNOWN                       
172.3993  45.5927    2.0  13.0  -30.4   0.2989   5.9 ------	UNKNOWN                       
220.7717  55.7642    2.3  25.9 -134.6   0.2994   5.0 ------	UNKNOWN                       
262.4749  42.2995    1.8  55.1 -145.1   1.7305   6.5 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:

Plot creation:
Tue Dec 26 22:50:44 EST 2023