batgrbproduct analysis for trigger=952164

batgrbproduct Analysis for Trigger=952164

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Jan 27 08:32:40 EST 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger952164/batgroup_hand_proc
======================================================================

  Trigger: 00952164      Segment: 000

  BAT Trigger Time: 601644723.52   [s; MET]
      Trigger Stop: 601644731.712   [s; MET]
               UTC: 2020-01-25T11:31:39.198280    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 228.046615901226   Dec: -8.14842299022016  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.97
     Image Trigger?:     NO
     Rate S/N Ratio:     12.2065556157337  [ if not an image trigger ]
     Image S/N Ratio:    7.97

  Flight Position:   [ source = BAT ]
    RA: 228.046615901226   Dec: -8.14842299022016  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 228.06927460046   Dec: -8.1420304839966  [deg; J2000]  
        { 15h 12m 16.6s , -08d 08' 31.3" }
         +/- 1.77967438904185 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.777876580447425 [arcmin] (formal 1-sigma fit error)
    SNR: 13.3502384249934
 
  Angular difference between Flight and Ground position is 1.399396 arcmin
 
  Partial Coding Fraction: 0.4296875    [ including projection effects ]

  Duration
     T90: 350.827999949455 +/- 34.0324778966433
        Measured from: -15.472000002861
                   to: 335.355999946594     [s; relative to TRIGTIME]
     T50: 105.087999939919 +/- 89.9133209690049
        Measured from: 185.180000066757
                   to: 290.268000006676     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 286.667999982834     
                   to: 287.667999982834     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -36.2239999771118     
                   to: 427.736000061035     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     5.736099   5.974235   3.474632   0.306758
           0.172900   0.169135   0.160504   0.177774 [error]
 Peak      0.126849   0.182573   0.141496   0.019330
           0.008321   0.008997   0.008224   0.007304 [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 1.84e-06 2.58e-06 2.67e-06 5.07e-06 8.69e-06 1.22e-05   erg/cm2
              Error 1.22e-07 9.71e-08 1.64e-07 6.74e-07 3.62e-07 8.00e-07   erg/cm2
Peak flux Power-law 1.29e+00 1.32e+00 9.50e-01 1.09e+00 3.99e+00 4.65e+00   ph/cm2/s
              Error 1.27e-01 7.95e-02 6.83e-02 1.62e-01 2.28e-01 2.66e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.80e-06 2.61e-06 2.66e-06 3.92e-06 8.55e-06 1.10e-05   erg/cm2
              Error 1.11e-07 1.14e-07 1.69e-07 1.61e-06 4.60e-07 1.34e-06   erg/cm2
Peak flux Cutoff-PL 1.14e+00 1.40e+00 9.97e-01 5.41e-01 3.86e+00 4.07e+00   ph/cm2/s
              Error 1.55e-01 9.50e-02 7.80e-02 2.34e-01 2.41e-01 3.40e-01   ph/cm2/s
 
Fluence        Band 1.76e-06 2.60e-06 2.64e-06 4.87e-06 8.58e-06 1.19e-05   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    1.949    0.080    -      -           2.04e-03 8.71e-05   56.290 57
CPL   1.801    0.303      61.7    0.0      2.44e-03 0.00e+00   55.560 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.474    0.098    -      -           3.22e-02 1.85e-03   65.050 57
CPL   0.800    0.445      89.3   41.2      6.99e-02 3.75e-02   57.200 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: 324.480000 sec.
T50 in the 50-300 keV band: 240.448000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  463.960  -36.224  427.736
T90   350.828  -15.472  335.356
T50   105.088  185.180  290.268
Peak    1.000  286.668  287.668

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  228.0693  -8.1420 0.0144   29.0  102.4       3.6528    13.4  TRIG_00952164       
------------------------------------------
 
Foreground time interval of the image:
-36.224  51.181 (delta_t =  87.405 [sec])
Background time interval of the image:
-179.520 -36.224 (delta_t = 143.296 [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  -36.224 sec. to  427.736 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.94936     ( -0.0797338   0.0808003 )
Norm@50keV  : 2.03542E-03    ( -8.74201e-05   8.67493e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.29 using 59 PHA bins.
# Reduced chi-squared =         0.9876 for     57 degrees of freedom 
# Null hypothesis probability =   5.015991e-01
 
Photon flux (15-150 keV)    in 464 sec: 0.298420 ( -0.0118376  0.0119032 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.69118e-06 ( -3.60442e-07  3.6301e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -36.224 sec. to  427.736 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.80084     ( -0.315092   0.291799 )
Epeak [keV] : 61.6957      (   )
Norm@50keV  : 2.43603E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.56 using 59 PHA bins.
# Reduced chi-squared =         0.9922 for     56 degrees of freedom 
# Null hypothesis probability =   4.913278e-01
 
Photon flux (15-150 keV)    in 464 sec: 0.294754 ( -0.013734  0.013745 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.54521e-06 ( -4.61819e-07  4.58757e-07 ) ergs/cm2
 
Band function
Time interval is from  -36.224 sec. to  427.736 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.80081   ( -5.79851   0.222112 )
beta        : -10.0000    ( 10   0 )
Epeak [keV] : 61.6837      ( -46.1034 -61.6837 )
Norm@50keV   : 2.43554E-03    ( -0.000474685   0.00110112 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.56 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     55 degrees of freedom 
# Null hypothesis probability =   4.533967e-01
 
Photon flux (15-150 keV)    in 464 sec: 0.295003 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.58497e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.4143  (  )
R^2/D10^2   : 7.74812E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         210.67 using 59 PHA bins.
# Reduced chi-squared =         3.6960 for     57 degrees of freedom 
# Null hypothesis probability =   1.757667e-19
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.850e-07   7.540e-08
25- 50  2.918e-06   1.244e-07
50-150  2.208e-06   2.107e-07
15-150  6.111e-06   2.598e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 80.5904       (-10.7828      13.6065)
Norm        : 1.35195       (-0.088496     0.0978015)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.96 using 59 PHA bins.
# Reduced chi-squared =          1.087 for     57 degrees of freedom 
# Null hypothesis probability =   3.036439e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.629e-06   9.674e-08
25- 50  2.686e-06   1.016e-07
50-150  3.810e-06   3.543e-07
15-150  8.124e-06   3.758e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.62990        (-0.674468      0.739114)
R1^2/D10^2  : 0.841033        (-0.319199      0.578758)
kT2 [keV]   : 20.3836        (-2.40122      3.20433)
R2^2/D10^2  : 6.80838E-03    (-0.00292723   0.00436877)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.44 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     55 degrees of freedom 
# Null hypothesis probability =   4.208341e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.742e-06   2.188e-07
25- 50  2.557e-06   2.554e-07
50-150  4.001e-06   5.765e-07
15-150  8.300e-06   8.190e-07

Peak spectrum fit

Power-law model
Time interval is from  286.668 sec. to  287.668 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.47389     ( -0.0978481   0.0985094 )
Norm@50keV  : 3.21593E-02    ( -0.00184795   0.00184302 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.05 using 59 PHA bins.
# Reduced chi-squared =          1.141 for     57 degrees of freedom 
# Null hypothesis probability =   2.167645e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.98721 ( -0.227639  0.227872 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.06427e-07 ( -1.94034e-08  1.95251e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  286.668 sec. to  287.668 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.800365     ( -0.468079   0.421488 )
Epeak [keV] : 89.3087      ( -18.4057 63.9855 )
Norm@50keV  : 6.99471E-02    ( -0.0264438   0.0485222 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.20 using 59 PHA bins.
# Reduced chi-squared =          1.021 for     56 degrees of freedom 
# Null hypothesis probability =   4.304064e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.85731 ( -0.24128  0.241 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.90861e-07 ( -2.1723e-08  2.1825e-08 ) ergs/cm2
 
Band function
Time interval is from  286.668 sec. to  287.668 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.785235   ( -0.426726   1.02202 )
beta        : -2.33603    ( 2.34192   0.747916 )
Epeak [keV] : 87.7473      ( -19.071 63.8717 )
Norm@50keV   : 7.14556E-02    ( -0.0232462   0.233664 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.16 using 59 PHA bins.
# Reduced chi-squared =          1.039 for     55 degrees of freedom 
# Null hypothesis probability =   3.949269e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.90391e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 15.1744  (-1.00384  1.08644)
R^2/D10^2   : 0.440472  (-0.0948478   0.119404)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         100.18 using 59 PHA bins.
# Reduced chi-squared =         1.7576 for     57 degrees of freedom 
# Null hypothesis probability =   3.603146e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.119e-08   2.105e-09
25- 50  8.510e-08   6.090e-09
50-150  1.341e-07   1.520e-08
15-150  2.404e-07   1.625e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-32.4083      -200)
Norm        : 16.3309       (-0.912426     0.912426)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.48 using 59 PHA bins.
# Reduced chi-squared =          1.079 for     57 degrees of freedom 
# Null hypothesis probability =   3.187285e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.078e-08   2.635e-09
25- 50  7.844e-08   4.825e-09
50-150  1.720e-07   3.095e-08
15-150  2.913e-07   4.280e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.76704        (-2.00614      2.45268)
R1^2/D10^2  : 3.73213        (-2.20319      5.45798)
kT2 [keV]   : 22.2247        (-3.69593      7.64541)
R2^2/D10^2  : 9.33219E-02    (-0.0641068   0.0997247)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.29 using 59 PHA bins.
# Reduced chi-squared =          1.078 for     55 degrees of freedom 
# Null hypothesis probability =   3.220125e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.496e-08   9.550e-09
25- 50  7.909e-08   1.504e-08
50-150  1.717e-07   4.465e-08
15-150  2.857e-07   6.420e-08
Plot creation:
Mon Jan 27 08:50:16 EST 2020