batgrbproduct analysis for trigger=1094950

batgrbproduct Analysis for Trigger=1094950

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Thu Mar  3 07:23:32 EST 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1094950/GCN5_download_cron
======================================================================

  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: 301.399464137966   Dec: 49.4083541245987  [deg; J2000]  
        { 20h 05m 35.9s , +49d 24' 30.1" }
         +/- 2.69506240293639 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.20826043603723 [arcmin] (formal 1-sigma fit error)
    SNR: 7.37938310872671
 
  Angular difference between Flight and Ground position is 1.722026 arcmin
 
  Partial Coding Fraction: 0.4453125    [ including projection effects ]

  Duration
     T90: 6.83599996566772 +/- 2.21846801049015
        Measured from: -1.69999992847443
                   to: 5.1360000371933     [s; relative to TRIGTIME]
     T50: 1.77999997138977 +/- 1.28746108921992
        Measured from: 0.604000091552734
                   to: 2.3840000629425     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.459999918937683     
                   to: 1.45999991893768     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.86800003051758     
                   to: 5.38800001144409     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.183684   0.157323   0.177390   0.032963
           0.035113   0.036712   0.032854   0.029902 [error]
 Peak      0.037079   0.044495   0.050792   0.025873
           0.013772   0.014235   0.012921   0.011121 [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 4.64e-08 8.81e-08 1.29e-07 4.06e-07 3.66e-07 6.70e-07   erg/cm2
              Error 1.65e-08 1.88e-08 3.24e-08 2.30e-07 7.90e-08 2.51e-07   erg/cm2
Peak flux Power-law 3.60e-01 3.99e-01 3.17e-01 4.15e-01 1.23e+00 1.49e+00   ph/cm2/s
              Error 2.01e-01 1.36e-01 9.97e-02 2.91e-01 3.66e-01 4.13e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.61e-08 8.84e-08 1.29e-07 4.02e-07 3.65e-07 6.39e-07   erg/cm2
              Error 1.73e-08 1.69e-08 3.33e-08 3.88e-07 7.88e-08 2.96e-07   erg/cm2
Peak flux Cutoff-PL 3.73e-01 4.05e-01 3.13e-01 3.96e-01 1.24e+00 1.49e+00   ph/cm2/s
              Error 2.08e-01 1.37e-01 1.05e-01 3.83e-01 3.66e-01 4.09e-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    1.446    0.359    -      -           5.27e-03 1.04e-03   57.740 57
CPL   1.441    0.000    9999.3    0.0      5.28e-03 0.00e+00   57.740 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.335    0.524    -      -           1.02e-02 2.82e-03   34.210 57
CPL   1.344    0.528    9999.4    0.0      1.02e-02 2.82e-03   34.220 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    7.256   -1.868    5.388
T90     6.836   -1.700    5.136
T50     1.780    0.604    2.384
Peak    1.000    0.460    1.460

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  301.3995 +49.4084 0.0261   41.3  -21.8       0.5458     7.4  TRIG_01094950       
------------------------------------------
 
Foreground time interval of the image:
 -1.868   5.388 (delta_t =   7.256 [sec])
Background time interval of the image:
-239.192 -43.592 (delta_t = 195.600 [sec])
-42.192  -1.868 (delta_t =  40.324 [sec])

Lightcurves

Notes:

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

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Spectra

Notes:

Time averaged spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -1.868 sec. to    5.388 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44562     ( -0.358731   0.35989 )
Norm@50keV  : 5.26727E-03    ( -0.00103951   0.001034 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.74 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     57 degrees of freedom 
# Null hypothesis probability =   4.477998e-01
 
Photon flux (15-150 keV)    in 7.256 sec: 0.648415 ( -0.131474  0.131934 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.66014e-07 ( -7.85491e-08  7.93959e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.868 sec. to    5.388 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44083     (     )
Epeak [keV] : 9999.28      (   )
Norm@50keV  : 5.27903E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.74 using 59 PHA bins.
# Reduced chi-squared =          1.031 for     56 degrees of freedom 
# Null hypothesis probability =   4.107134e-01
 
Photon flux (15-150 keV)    in 7.256 sec: 0.649810 ( -0.133099  0.130451 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.65015e-07 ( -7.79207e-08  7.97449e-08 ) ergs/cm2
 
Band function
Time interval is from   -1.868 sec. to    5.388 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.98277   ( -4.98277   -4.98277 )
beta        : -1.47283    ( -0.397041   0.372309 )
Epeak [keV] : 21.0756      ( -21.0756 9.26102 )
Norm@50keV   : 1479.61    ( -287.687   3.4537e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.61 using 59 PHA bins.
# Reduced chi-squared =          1.047 for     55 degrees of freedom 
# Null hypothesis probability =   3.789344e-01
 
Photon flux (15-150 keV)    in 7.256 sec: 0.649018 (    ) 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]    : 18.0680  (-4.45902  6.25373)
R^2/D10^2   : 3.82990E-02  (-0.0240385   0.0626677)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.96 using 59 PHA bins.
# Reduced chi-squared =          1.175 for     57 degrees of freedom 
# Null hypothesis probability =   1.722090e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.814e-08   8.200e-09
25- 50  8.414e-08   3.253e-08
50-150  1.996e-07   8.834e-08
15-150  3.019e-07   1.145e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-94.6591      -199.363)
Norm        : 2.67094       (-0.522979     0.522979)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.826e-08   2.837e-08
25- 50  9.283e-08   5.362e-08
50-150  2.036e-07   1.183e-07
15-150  3.447e-07   1.975e-07
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.55602        (-1.72526      3.58809)
R1^2/D10^2  : 3.82572        (-3.40842      17.5274)
kT2 [keV]   : 25.4797        (-7.37      17.837)
R2^2/D10^2  : 1.07342E-02    (-0.00872429   0.0235184)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.453e-08   3.262e-08
25- 50  7.344e-08   3.652e-08
50-150  2.397e-07   1.456e-07
15-150  3.676e-07   1.982e-07

Peak spectrum fit

Power-law model
Time interval is from    0.460 sec. to    1.460 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33525     ( -0.537121   0.511065 )
Norm@50keV  : 1.02391E-02    ( -0.00282201   0.00281661 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.21 using 59 PHA bins.
# Reduced chi-squared =         0.6002 for     57 degrees of freedom 
# Null hypothesis probability =   9.928015e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.22983 ( -0.364977  0.367338 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.00338e-07 ( -2.9205e-08  2.93233e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.460 sec. to    1.460 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34442     ( -0.552917   0.503393 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 1.02376E-02    ( -0.00282414   0.00282519 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.22 using 59 PHA bins.
# Reduced chi-squared =         0.6110 for     56 degrees of freedom 
# Null hypothesis probability =   9.904576e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.23878 ( -0.373841  0.35865 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.0025e-07 ( -2.90514e-08  2.904e-08 ) ergs/cm2
 
Band function
Time interval is from    0.460 sec. to    1.460 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.06656   ( 1.06675   1.06675 )
beta        : -1.33516    ( 1.33521   0.536901 )
Epeak [keV] : 40.8745      ( -40.7322 -40.7322 )
Norm@50keV   : 1.97572E-02    ( -0.0123248   1.7547 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.21 using 59 PHA bins.
# Reduced chi-squared =         0.6220 for     55 degrees of freedom 
# Null hypothesis probability =   9.875094e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 19.6492  (-5.68914  10.219)
R^2/D10^2   : 5.72118E-02  (-0.057162   0.127033)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.288e-09   2.692e-09
25- 50  2.111e-08   1.299e-08
50-150  6.025e-08   3.769e-08
15-150  8.565e-08   5.155e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-107.224      -199.363)
Norm        : 5.17437       (-1.44323     1.44322)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.288e-08   7.895e-09
25- 50  2.478e-08   1.541e-08
50-150  5.436e-08   3.330e-08
15-150  9.203e-08   5.435e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.95651        (-2.66746      6.29584)
R1^2/D10^2  : 13.2972        (-13.1134      33343.6)
kT2 [keV]   : 25.0002        (-8.58954      -25.0009)
R2^2/D10^2  : 2.31561E-02    (-0.0218893   0.0531418)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.398e-08   8.400e-09
25- 50  1.828e-08   1.012e-08
50-150  6.615e-08   4.068e-08
15-150  9.841e-08   5.325e-08
Plot creation:
Thu Mar  3 07:29:48 EST 2022