batgrbproduct analysis for trigger=859421

batgrbproduct Analysis for Trigger=859421

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Sep  6 10:17:56 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger859421/batgroup_hand_proc
======================================================================

  Trigger: 00859421      Segment: 000

  BAT Trigger Time: 557848688   [s; MET]
      Trigger Stop: 557848752   [s; MET]
               UTC: 2018-09-05T13:57:46.456140    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 91.0352587911709   Dec: -4.59128989702066  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.32
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    10.32

  Flight Position:   [ source = BAT ]
    RA: 91.0352587911709   Dec: -4.59128989702066  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 91.0383700527125   Dec: -4.59218787784411  [deg; J2000]  
        { 06h 04m 09.2s , -04d 35' 31.9" }
         +/- 1.70293470500395 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.625917281207332 [arcmin] (formal 1-sigma fit error)
    SNR: 14.2179023834398
 
  Angular difference between Flight and Ground position is 0.193720 arcmin
 
  Partial Coding Fraction: 0.2929688    [ including projection effects ]

  Duration
     T90: 165.34399998188 +/- 28.8994952744125
        Measured from: -47.2599999904633
                   to: 118.083999991417     [s; relative to TRIGTIME]
     T50: 55.067999958992 +/- 10.514913720399
        Measured from: -22.0479999780655
                   to: 33.0199999809265     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -2.09200000762939     
                   to: -1.09200000762939     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -58.932000041008     
                   to: 146.659999966621     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.730808   2.435526   1.881047   0.411693
           0.141017   0.147103   0.128729   0.114850 [error]
 Peak      0.024613   0.037357   0.040866   0.017095
           0.011616   0.011736   0.010400   0.008847 [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 6.36e-07 1.10e-06 1.45e-06 3.87e-06 4.23e-06 7.05e-06   erg/cm2
              Error 7.38e-08 7.77e-08 1.28e-07 7.33e-07 3.09e-07 8.30e-07   erg/cm2
Peak flux Power-law 3.18e-01 3.17e-01 2.21e-01 2.45e-01 9.53e-01 1.10e+00   ph/cm2/s
              Error 1.66e-01 1.07e-01 8.04e-02 1.81e-01 3.04e-01 3.35e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.92e-07 1.14e-06 1.49e-06 2.16e-06 4.11e-06 5.38e-06   erg/cm2
              Error 8.78e-08 9.38e-08 1.40e-07 -------- 3.37e-07 1.36e-06   erg/cm2
Peak flux Cutoff-PL 2.82e-01 3.34e-01 2.37e-01 1.39e-01 9.33e-01 9.90e-01   ph/cm2/s
              Error 1.91e-01 1.22e-01 9.48e-02 1.90e-01 3.09e-01 3.79e-01   ph/cm2/s
 
Fluence        Band 5.67e-07 1.17e-06 1.43e-06 3.31e-06 4.14e-06 6.52e-06   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.84e-01 3.33e-01 2.36e-01 1.41e-01 9.34e-01 9.95e-01   ph/cm2/s
              Error -------- -------- -------- -------- 2.99e-01 3.81e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.603    0.118    -      -           2.20e-03 1.51e-04   68.440 57
CPL   1.188    0.479      98.7  -34.3      3.55e-03 2.07e-03   66.030 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.518    0.516    -      -           7.60e-03 2.33e-03   54.590 57
CPL   0.913    1.890      94.8    0.0      1.50e-02 8.47e-02   54.210 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: 83.200000 sec.
T50 in the 50-300 keV band: 38.464000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  205.592  -58.932  146.660
T90   165.344  -47.260  118.084
T50    55.068  -22.048   33.020
Peak    1.000   -2.092   -1.092

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   91.0384    -4.5922   0.0135    42.8595   162.2173         3.5341083     14.218 TRIG_00859421                 
 
Foreground time interval of the image:
-12.499  72.101 (delta_t =  84.600 [sec])
Background time interval of the image:

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  -58.932 sec. to  146.660 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.60278     ( -0.117297   0.118238 )
Norm@50keV  : 2.20034E-03    ( -0.000151096   0.000150611 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.44 using 59 PHA bins.
# Reduced chi-squared =          1.201 for     57 degrees of freedom 
# Null hypothesis probability =   1.425992e-01
 
Photon flux (15-150 keV)    in 205.6 sec: 0.282997 ( -0.0197922  0.0198372 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.22938e-06 ( -3.08184e-07  3.09648e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -58.932 sec. to  146.660 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.18764     ( -0.507268   0.451655 )
Epeak [keV] : 98.7022      ( -30.0775 -98.7022 )
Norm@50keV  : 3.55310E-03    ( -0.00139949   0.00273826 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.03 using 59 PHA bins.
# Reduced chi-squared =          1.179 for     56 degrees of freedom 
# Null hypothesis probability =   1.688393e-01
 
Photon flux (15-150 keV)    in 205.6 sec: 0.277262 ( -0.020736  0.020762 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.1127e-06 ( -3.37225e-07  3.36691e-07 ) ergs/cm2
 
Band function
Time interval is from  -58.932 sec. to  146.660 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.18753   ( -0.352299   0.399701 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 98.6756      ( -24.0222 -98.6756 )
Norm@50keV   : 3.55311E-03    ( -0.00139996   0.00273883 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.03 using 59 PHA bins.
# Reduced chi-squared =          1.201 for     55 degrees of freedom 
# Null hypothesis probability =   1.465416e-01
 
Photon flux (15-150 keV)    in 205.6 sec: 0.277099 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.13951e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.5395  (-1.21847  1.34198)
R^2/D10^2   : 3.47821E-02  (-0.00951263   0.0129836)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         113.40 using 59 PHA bins.
# Reduced chi-squared =         1.9895 for     57 degrees of freedom 
# Null hypothesis probability =   1.305567e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.180e-07   4.153e-08
25- 50  1.227e-06   1.110e-07
50-150  1.740e-06   2.223e-07
15-150  3.285e-06   2.806e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 177.269       (-50.1879      -176.595)
Norm        : 1.15431       (-0.0848085     0.0957991)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.08 using 59 PHA bins.
# Reduced chi-squared =          1.159 for     57 degrees of freedom 
# Null hypothesis probability =   1.919200e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.995e-07   6.199e-08
25- 50  1.137e-06   2.532e-07
50-150  2.394e-06   9.916e-07
15-150  4.130e-06   1.437e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.10806        (-1.39561      1.60171)
R1^2/D10^2  : 0.286042        (-0.138153      0.323915)
kT2 [keV]   : 25.1737        (-4.60956      8.19636)
R2^2/D10^2  : 3.74598E-03    (-0.00239787   0.00248459)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.78 using 59 PHA bins.
# Reduced chi-squared =          1.178 for     55 degrees of freedom 
# Null hypothesis probability =   1.722422e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.693e-07   1.618e-07
25- 50  1.165e-06   3.026e-07
50-150  2.377e-06   9.150e-07
15-150  4.112e-06   1.155e-06

Peak spectrum fit

Power-law model
Time interval is from   -2.092 sec. to   -1.092 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51796     ( -0.514569   0.516879 )
Norm@50keV  : 7.59880E-03    ( -0.00233441   0.00232394 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.59 using 59 PHA bins.
# Reduced chi-squared =         0.9578 for     57 degrees of freedom 
# Null hypothesis probability =   5.659497e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.953279 ( -0.302136  0.304952 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.18798e-08 ( -2.3167e-08  2.35009e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.092 sec. to   -1.092 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.912642     ( -2.36845   1.41251 )
Epeak [keV] : 94.8386      ( -94.9411 -94.9411 )
Norm@50keV  : 1.49821E-02    ( -0.00949802   0.159859 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.21 using 59 PHA bins.
# Reduced chi-squared =         0.9680 for     56 degrees of freedom 
# Null hypothesis probability =   5.430154e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.932712 ( -0.308012  0.310048 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.01254e-08 ( -2.38138e-08  1.23641e-08 ) ergs/cm2
 
Band function
Time interval is from   -2.092 sec. to   -1.092 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.05341   ( -1.07031   2.31886 )
beta        : -1.75861    ( 9.37145   19.3715 )
Epeak [keV] : 29.6810      ( -31.7398 -99.1687 )
Norm@50keV   : 71.0177    ( -71.4006   107.773 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.38 using 59 PHA bins.
# Reduced chi-squared =         0.9705 for     55 degrees of freedom 
# Null hypothesis probability =   5.367951e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.934209 ( 6.06579  -0.293378 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.0059e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 17.3057  (-6.2619  8.75523)
R^2/D10^2   : 6.60059E-02  (-0.0653702   0.249461)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.90 using 59 PHA bins.
# Reduced chi-squared =         0.9982 for     57 degrees of freedom 
# Null hypothesis probability =   4.789481e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.006e-09   2.629e-09
25- 50  1.798e-08   1.121e-08
50-150  3.865e-08   2.475e-08
15-150  6.063e-08   3.822e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (-199.363      -199.363)
Norm        : 3.93897       (-1.19091     1.56746)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.33 using 59 PHA bins.
# Reduced chi-squared =         0.9531 for     57 degrees of freedom 
# Null hypothesis probability =   5.760244e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.808e-09   6.180e-09
25- 50  1.887e-08   1.178e-08
50-150  4.138e-08   2.499e-08
15-150  7.006e-08   4.258e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.11781        (-2.85407      6.70345)
R1^2/D10^2  : 1.68062        (-1.62636      5.94639)
kT2 [keV]   : 24.9679        (-21.2488      42.2874)
R2^2/D10^2  : 1.51653E-02    (-0.0146245   0.0442699)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.04 using 59 PHA bins.
# Reduced chi-squared =         0.9643 for     55 degrees of freedom 
# Null hypothesis probability =   5.500587e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.023e-08   6.205e-09
25- 50  1.825e-08   9.270e-09
50-150  4.396e-08   2.744e-08
15-150  7.245e-08   3.882e-08
Plot creation:
Thu Sep  6 10:27:08 EDT 2018