batgrbproduct analysis for trigger=824451

batgrbproduct Analysis for Trigger=824451

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Apr 12 17:15:37 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger824451/GCN5_download_cron
======================================================================

  Trigger: 00824451      Segment: 000

  BAT Trigger Time: 545142484.48   [s; MET]
      Trigger Stop: 545142485.504   [s; MET]
               UTC: 2018-04-11T12:27:43.711420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 356.82917852822   Dec: 66.7906613390428  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    18.13
     Image Trigger?:     NO
     Rate S/N Ratio:     41.3037528561268  [ if not an image trigger ]
     Image S/N Ratio:    18.13

  Flight Position:   [ source = BAT ]
    RA: 356.82917852822   Dec: 66.7906613390428  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 356.84020968834   Dec: 66.7902341676739  [deg; J2000]  
        { 23h 47m 21.7s , +66d 47' 24.8" }
         +/- 0.583120297660089 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.135588906165772 [arcmin] (formal 1-sigma fit error)
    SNR: 65.7278734704215
 
  Angular difference between Flight and Ground position is 0.262096 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 77.9559998512268 +/- 1.00409571383667
        Measured from: -1.19599986076355
                   to: 76.7599999904633     [s; relative to TRIGTIME]
     T50: 47.3880000114441 +/- 1.01256908864099
        Measured from: 14.7560000419617
                   to: 62.1440000534058     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 51.7400000095367     
                   to: 52.7400000095367     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -6.92000007629395     
                   to: 100.832000017166     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     5.202371   7.225753   5.708333   1.479869
           0.064020   0.068467   0.061156   0.048154 [error]
 Peak      0.167704   0.266310   0.265057   0.088745
           0.007792   0.009385   0.009316   0.006843 [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 1.59e-06 3.00e-06 4.38e-06 1.37e-05 1.24e-05 2.26e-05   erg/cm2
              Error 5.63e-08 6.14e-08 7.52e-08 5.66e-07 1.93e-07 5.83e-07   erg/cm2
Peak flux Power-law 1.49e+00 1.89e+00 1.74e+00 2.83e+00 6.08e+00 7.95e+00   ph/cm2/s
              Error 1.15e-01 8.72e-02 7.54e-02 2.68e-01 2.37e-01 3.28e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.53e-06 3.01e-06 4.44e-06 1.18e-05 1.23e-05 2.08e-05   erg/cm2
              Error 7.82e-08 6.25e-08 9.20e-08 1.30e-06 2.09e-07 1.51e-06   erg/cm2
Peak flux Cutoff-PL 1.43e+00 1.90e+00 1.78e+00 2.40e+00 6.04e+00 7.51e+00   ph/cm2/s
              Error 1.48e-01 9.20e-02 9.15e-02 5.31e-01 2.48e-01 6.37e-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    1.454    0.030    -      -           1.20e-02 1.91e-04   39.810 57
CPL   1.330    0.094     326.1 2935.4      1.36e-02 1.55e-03   36.840 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.114    0.069    -      -           5.24e-02 1.98e-03   58.870 57
CPL   0.959    0.237     385.9    0.0      6.14e-02 1.52e-02   57.840 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: 75.840000 sec.
T50 in the 50-300 keV band: 47.168000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  107.752   -6.920  100.832
T90    77.956   -1.196   76.760
T50    47.388   14.756   62.144
Peak    1.000   51.740   52.740

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  356.8402 +66.7902 0.0029   19.5   17.9       4.3945    65.7  TRIG_00824451       
------------------------------------------
 
Foreground time interval of the image:
 -6.920  10.221 (delta_t =  17.141 [sec])
Background time interval of the image:
-122.379  -6.920 (delta_t = 115.459 [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   -6.920 sec. to  100.832 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.45361     ( -0.0302944   0.0302341 )
Norm@50keV  : 1.20466E-02    ( -0.000190852   0.000190693 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.81 using 59 PHA bins.
# Reduced chi-squared =         0.6984 for     57 degrees of freedom 
# Null hypothesis probability =   9.594218e-01
 
Photon flux (15-150 keV)    in 107.8 sec: 1.48592 ( -0.0282279  0.0283437 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.24187e-05 ( -1.9293e-07  1.92944e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -6.920 sec. to  100.832 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32978     ( -0.125324   0.0621825 )
Epeak [keV] : 326.101      ( -132.567 5738.21 )
Norm@50keV  : 1.35599E-02    ( -0.00141458   0.00168139 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.84 using 59 PHA bins.
# Reduced chi-squared =         0.6578 for     56 degrees of freedom 
# Null hypothesis probability =   9.776069e-01
 
Photon flux (15-150 keV)    in 107.8 sec: 1.46834 ( -0.03253  0.03277 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.23418e-05 ( -2.09671e-07  2.09132e-07 ) ergs/cm2
 
Band function
Time interval is from   -6.920 sec. to  100.832 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.935027   ( -0.434018   3.93143 )
beta        : -1.49256    ( 1.49265   0.0464552 )
Epeak [keV] : 81.3652      ( -47.2286 704.378 )
Norm@50keV   : 2.34001E-02    ( -0.00975803   0.0890494 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.56 using 59 PHA bins.
# Reduced chi-squared =         0.6465 for     55 degrees of freedom 
# Null hypothesis probability =   9.806274e-01
 
Photon flux (15-150 keV)    in 107.8 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]    : 19.1601  (  )
R^2/D10^2   : 6.97781E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         831.05 using 59 PHA bins.
# Reduced chi-squared =         14.580 for     57 degrees of freedom 
# Null hypothesis probability =  6.641117e-138
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.411e-07   1.919e-08
25- 50  2.618e-06   6.522e-08
50-150  7.075e-06   1.709e-07
15-150  1.023e-05   1.757e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 6.24012       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         119.61 using 59 PHA bins.
# Reduced chi-squared =         2.0985 for     57 degrees of freedom 
# Null hypothesis probability =   2.428889e-06
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.675e-06   3.126e-08
25- 50  3.222e-06   6.199e-08
50-150  7.067e-06   1.315e-07
15-150  1.196e-05   2.156e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.32666        (-0.531702      0.557776)
R1^2/D10^2  : 0.790251        (-0.15323      0.201491)
kT2 [keV]   : 31.5732        (-1.92503      2.32632)
R2^2/D10^2  : 1.02138E-02    (-0.0022427   0.00257098)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.26 using 59 PHA bins.
# Reduced chi-squared =         0.9501 for     55 degrees of freedom 
# Null hypothesis probability =   5.801395e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.265e-06   7.869e-08
25- 50  3.106e-06   1.003e-07
50-150  7.830e-06   2.415e-07
15-150  1.220e-05   2.965e-07

Peak spectrum fit

Power-law model
Time interval is from   51.740 sec. to   52.740 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.11355     ( -0.0687272   0.0685071 )
Norm@50keV  : 5.23515E-02    ( -0.00198269   0.00198208 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.87 using 59 PHA bins.
# Reduced chi-squared =          1.033 for     57 degrees of freedom 
# Null hypothesis probability =   4.067245e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.08062 ( -0.236862  0.237091 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.45004e-07 ( -2.30216e-08  2.3083e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   51.740 sec. to   52.740 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.959335     ( -0.27167   0.201906 )
Epeak [keV] : 385.857      ( -385.857 -385.857 )
Norm@50keV  : 6.13754E-02    ( -0.0113326   0.0191427 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.84 using 59 PHA bins.
# Reduced chi-squared =          1.033 for     56 degrees of freedom 
# Null hypothesis probability =   4.072512e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.03577 ( -0.24766  0.24761 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.41094e-07 ( -2.4284e-08  2.4175e-08 ) ergs/cm2
 
Band function
Time interval is from   51.740 sec. to   52.740 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.959419   ( 0.71142   0.71142 )
beta        : -9.86282    ( 8.37556   18.3756 )
Epeak [keV] : 385.995      ( -121.109 -385.995 )
Norm@50keV   : 6.13646E-02    ( -0.00231774   0.0154624 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.84 using 59 PHA bins.
# Reduced chi-squared =          1.052 for     55 degrees of freedom 
# Null hypothesis probability =   3.709418e-01
 
Photon flux (15-150 keV)    in 1 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]    : 20.7380  (  )
R^2/D10^2   : 0.253790  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         184.25 using 59 PHA bins.
# Reduced chi-squared =         3.2325 for     57 degrees of freedom 
# Null hypothesis probability =   2.532198e-15
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.073e-08   1.780e-09
25- 50  1.057e-07   5.535e-09
50-150  3.385e-07   2.365e-08
15-150  4.649e-07   2.180e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 24.9756       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         171.20 using 59 PHA bins.
# Reduced chi-squared =         3.0035 for     57 degrees of freedom 
# Null hypothesis probability =   2.364263e-13
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.219e-08   2.455e-09
25- 50  1.196e-07   5.000e-09
50-150  2.624e-07   1.240e-08
15-150  4.442e-07   1.875e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.69906        (-1.28666      1.47936)
R1^2/D10^2  : 3.36286        (-1.40323      2.84355)
kT2 [keV]   : 32.4536        (-3.91345      5.8799)
R2^2/D10^2  : 5.27134E-02    (-0.0218269   0.0280529)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.53 using 59 PHA bins.
# Reduced chi-squared =          1.082 for     55 degrees of freedom 
# Null hypothesis probability =   3.143856e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.325e-08   7.125e-09
25- 50  1.098e-07   1.238e-08
50-150  3.910e-07   5.025e-08
15-150  5.441e-07   6.075e-08
Plot creation:
Thu Apr 12 17:24:59 EDT 2018