batgrbproduct analysis for trigger=1094950

batgrbproduct Analysis for Trigger=1094950

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 23:39:57 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1094950
======================================================================

  Trigger: 01094950      Segment: 000

  BAT Trigger Time: 667899648.192   [s; MET]
      Trigger Stop: 667899652.288   [s; MET]
               UTC: 2022-03-02T07:40:19.483320    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 301.431936947381   Dec: 49.3889348270439  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.47
     Image Trigger?:     NO
     Rate S/N Ratio:     9.79795897113271  [ if not an image trigger ]
     Image S/N Ratio:    7.47

  Flight Position:   [ source = BAT ]
    RA: 301.431936947381   Dec: 49.3889348270439  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 301.398540470341   Dec: 49.4074921603604  [deg; J2000]  
        { 20h 05m 35.6s , +49d 24' 27.0" }
         +/- 2.73845148288855 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.22395091858171 [arcmin] (formal 1-sigma fit error)
    SNR: 7.2129208136069
 
  Angular difference between Flight and Ground position is 1.714737 arcmin
 
  Partial Coding Fraction: 0.4453125    [ including projection effects ]

  Duration
     T90: 6.59200000762939 +/- 2.09326531433751
        Measured from: -1.56000006198883
                   to: 5.03199994564056     [s; relative to TRIGTIME]
     T50: 2.73600006103516 +/- 1.3268428140899
        Measured from: 0.615999937057495
                   to: 3.35199999809265     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.363999962806702     
                   to: 1.3639999628067     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.86400008201599     
                   to: 5.38399994373322     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.176902   0.154039   0.183094   0.030558
           0.035265   0.036764   0.032858   0.029864 [error]
 Peak      0.043073   0.038558   0.056087   0.021156
           0.013544   0.014177   0.013025   0.010980 [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 4.43e-08 8.63e-08 1.30e-07 4.23e-07 3.65e-07 6.83e-07   erg/cm2
              Error 1.62e-08 1.89e-08 3.23e-08 2.38e-07 7.93e-08 2.58e-07   erg/cm2
Peak flux Power-law 3.75e-01 4.20e-01 3.36e-01 4.46e-01 1.30e+00 1.58e+00   ph/cm2/s
              Error 1.92e-01 1.33e-01 9.97e-02 2.86e-01 3.63e-01 4.16e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.54e-08 8.55e-08 1.29e-07 4.33e-07 3.65e-07 6.42e-07   erg/cm2
              Error 1.91e-08 2.01e-08 3.46e-08 2.43e-07 7.17e-08 3.14e-07   erg/cm2
Peak flux Cutoff-PL 3.93e-01 4.11e-01 3.27e-01 4.43e-01 1.31e+00 1.66e+00   ph/cm2/s
              Error -------- -------- 2.37e-01 -------- -------- 1.05e+00   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    1.409    0.361    -      -           5.21e-03 1.04e-03   49.180 57
CPL   1.406    2.211    10000.0    0.0      5.23e-03 -2.09e-03   49.180 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.322    0.473    -      -           1.08e-02 2.83e-03   44.130 57
CPL   1.326    0.476    9999.4    0.0      1.08e-02 2.84e-03   44.140 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: 1.792000 sec.
T50 in the 50-300 keV band: 1.088000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    7.248   -1.864    5.384
T90     6.592   -1.560    5.032
T50     2.736    0.616    3.352
Peak    1.000    0.364    1.364

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
  301.3985    49.4075   0.0267    41.3484   -21.8456         0.5387006      7.213 TRIG_01094950                 
 
Foreground time interval of the image:
 -1.864   5.384 (delta_t =   7.248 [sec])
Background time interval of the image:
-239.192  -1.864 (delta_t = 237.328 [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 4.096000

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 4.096000

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 4.096000

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   -1.864 sec. to    5.384 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40921     ( -0.361643   0.360645 )
Norm@50keV  : 5.21334E-03    ( -0.00103793   0.00103505 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.18     using 59 bins.
 Reduced chi-squared = 0.862807
# Null hypothesis probability of 7.60e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 7.248 sec: 0.636239 ( -0.131284  0.132025 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.64484e-07 ( -7.89032e-08  7.96439e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -1.864 sec. to    5.384 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40635     ( -1.40669   3.01609 )
Epeak [keV] : 1.00000E+04      ( -10000 -10000 )
Norm@50keV  : 5.23176E-03    ( -0.00104327   -0.00523179 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.18     using 59 bins.
 Reduced chi-squared = 0.878214
# Null hypothesis probability of 7.29e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 7.248 sec: 0.639194 ( -0.145695  0.136288 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.65038e-07 ( -7.58054e-08  6.75136e-08 ) ergs/cm2

Band function

Time interval is from   -1.864 sec. to    5.384 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]    : 18.6667  (-4.4121  6.11636)
R^2/D10^2   : 3.43288E-02  (-0.0211376   0.0519243)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.57     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.91e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.715e-08   7.375e-09
25- 50  8.145e-08   3.565e-08
50-150  2.078e-07   8.194e-08
15-150  3.064e-07   1.218e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-91.2608      -199.363)
Norm        : 2.63435       (-0.524113     0.524083)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.04     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.31e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.755e-08   2.856e-08
25- 50  9.146e-08   5.309e-08
50-150  2.006e-07   1.156e-07
15-150  3.396e-07   1.967e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.48453        (-1.7684      3.55164)
R1^2/D10^2  : 3.77008        (-3.42326      41.7059)
kT2 [keV]   : 24.7604        (-6.78913      14.6746)
R2^2/D10^2  : 1.19411E-02    (-0.00926862   0.0238573)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.68     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.48e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.138e-08   3.008e-08
25- 50  7.313e-08   3.860e-08
50-150  2.386e-07   1.422e-07
15-150  3.631e-07   1.984e-07

Peak spectrum fit

Power-law model

Time interval is from    0.364 sec. to    1.364 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32240     ( -0.484881   0.461171 )
Norm@50keV  : 1.08146E-02    ( -0.00282423   0.00282662 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   44.13     using 59 bins.
 Reduced chi-squared = 0.774211
# Null hypothesis probability of 8.94e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.29570 ( -0.361279  0.36386 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.06309e-07 ( -2.94048e-08  2.95536e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.364 sec. to    1.364 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32582     ( -0.493864   0.458369 )
Epeak [keV] : 9999.35      ( -9999.36 -9999.36 )
Norm@50keV  : 1.08375E-02    ( -0.00283563   0.00283616 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   44.14     using 59 bins.
 Reduced chi-squared = 0.788214
# Null hypothesis probability of 8.74e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.30568 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.06574e-07 ( -3.08524e-08  2.55312e-08 ) ergs/cm2

Band function

Time interval is from    0.364 sec. to    1.364 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]    : 18.6409  (-4.90218  8.11215)
R^2/D10^2   : 7.36803E-02  (-0.0524938   0.13737)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.82     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.02e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.067e-09   3.146e-09
25- 50  2.404e-08   1.235e-08
50-150  6.115e-08   3.767e-08
15-150  9.026e-08   4.932e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (-101.688      -199.363)
Norm        : 5.45889       (-1.44561     1.44567)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   45.20     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.71e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.359e-08   8.410e-09
25- 50  2.615e-08   1.604e-08
50-150  5.735e-08   3.438e-08
15-150  9.709e-08   5.770e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.17938        (-2.67014      14.8912)
R1^2/D10^2  : 9.14050        (-9.04342      4313.04)
kT2 [keV]   : 23.1925        (-7.36799      -23.1947)
R2^2/D10^2  : 3.16789E-02    (-0.0296399   0.0717967)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   44.26     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.50e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.332e-08   7.625e-09
25- 50  2.095e-08   1.130e-08
50-150  6.740e-08   4.241e-08
15-150  1.017e-07   5.640e-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: 1.40921     ( -0.361643   0.360645 )
Norm@50keV  : 5.21334E-03    ( -0.00103793   0.00103505 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.18     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.60e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 7.248 sec: 0.636228 ( -0.131277  0.132016 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.64437e-07 ( -7.88909e-08  7.97164e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41871     ( -1.28428   0.650235 )
Epeak [keV] : 9998.82      ( -9999.34 -9999.34 )
Norm@50keV  : 5.15677E-03    ( -0.00103841   0.0164133 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.20     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.28e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 7.248 sec: 0.636882 ( -0.134974  0.130276 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.64191e-07 ( -8.05028e-08  7.96751e-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)  = 8.63e-08
S(50-100 keV) = 1.30e-07

T90 vs. Hardness ratio plot

T90                                   = 6.59200000762939 sec.
Hardness ratio (energy fluence ratio) = 1.50637

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.870759
Count Ratio (50-100 keV) / (15-25 keV) = 1.035

Mask shadow pattern

IMX = 8.168240404729624E-01, IMY = 3.274607089242439E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

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:
-239.192000 -1.864000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.5900  35.1928    1.5  53.3  -32.4  13.0518   7.6    0.5	Cyg X-1                       
308.1752  40.8870    5.1  44.8  -35.3   1.6849   2.3    4.9	Cyg X-3                       
326.3636  38.1659    0.0  38.6  -54.7  -0.6885  -1.0   13.0	Cyg X-2                       
105.7542  59.6679    2.5  39.9  102.1   4.4357   4.5 ------	UNKNOWN                       
144.4215  73.1973    3.8  40.1   70.9   3.5548   3.1 ------	UNKNOWN

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

Time interval of the image:
-1.864000 5.384000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.5327  35.1982    4.3  53.4  -32.4  -0.5719  -2.6    2.8	Cyg X-1                       
308.1377  40.8638    6.0  44.8  -35.2  -0.1799  -1.9    5.5	Cyg X-3                       
326.0590  38.3661    2.9  38.5  -54.2   0.3172   4.1    5.9	Cyg X-2                       
301.3990  49.4077    1.6  41.3  -21.8   0.5382   7.2 ------	UNKNOWN                       
342.2822  37.9208    2.3  32.1  -73.3   0.3430   5.1 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
621.108630 962.876000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6418  22.0035    0.8  36.0  126.6  11.5168  13.7    0.8	Crab                          
348.1361  42.0443    2.5  43.4  -50.4   5.1995   4.6 ------	UNKNOWN

Plot creation:
Mon Oct 24 05:07:20 EDT 2022