batgrbproduct analysis for trigger=783479

batgrbproduct Analysis for Trigger=783479

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Oct 28 23:54:01 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger783479/batgroup_hand_proc
======================================================================

  Trigger: 00783479      Segment: 000

  BAT Trigger Time: 530785406.528   [s; MET]
      Trigger Stop: 530785410.624   [s; MET]
               UTC: 2017-10-27T08:23:06.622860    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 61.6803931109227   Dec: -2.60607661453514  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.64
     Image Trigger?:     NO
     Rate S/N Ratio:     19.4164878389476  [ if not an image trigger ]
     Image S/N Ratio:    10.64

  Flight Position:   [ source = BAT ]
    RA: 61.6803931109227   Dec: -2.60607661453514  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 61.6828325019643   Dec: -2.60134352669912  [deg; J2000]  
        { 04h 06m 43.9s , -02d 36' 04.8" }
         +/- 1.08397245082418 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.54707911111024 [arcmin] (formal 1-sigma fit error)
    SNR: 27.1076778664962
 
  Angular difference between Flight and Ground position is 0.319415 arcmin
 
  Partial Coding Fraction: 0.9140625    [ including projection effects ]

  Duration
     T90: 97.5559999346733 +/- 4.9988430358009
        Measured from: 7.00800001621246
                   to: 104.563999950886     [s; relative to TRIGTIME]
     T50: 29.7879999279976 +/- 1.30550831221641
        Measured from: 43.7800000309944
                   to: 73.567999958992     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 62.3000000119209     
                   to: 63.3000000119209     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.00800001621246     
                   to: 129.98400002718     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.486135   4.639301   3.470780   0.746665
           0.073281   0.075237   0.066436   0.054147 [error]
 Peak      0.086481   0.147016   0.127915   0.027124
           0.007278   0.008137   0.007311   0.005206 [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 1.05e-06 1.90e-06 2.64e-06 7.62e-06 7.58e-06 1.32e-05   erg/cm2
              Error 4.82e-08 4.96e-08 7.16e-08 4.83e-07 1.75e-07 5.16e-07   erg/cm2
Peak flux Power-law 8.64e-01 9.90e-01 8.14e-01 1.12e+00 3.08e+00 3.79e+00   ph/cm2/s
              Error 9.44e-02 6.72e-02 5.77e-02 1.63e-01 1.89e-01 2.38e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.76e-07 1.93e-06 2.70e-06 5.28e-06 7.43e-06 1.09e-05   erg/cm2
              Error 6.43e-08 5.29e-08 8.12e-08 1.14e-06 1.97e-07 1.15e-06   erg/cm2
Peak flux Cutoff-PL 7.39e-01 1.05e+00 8.77e-01 5.50e-01 2.99e+00 3.22e+00   ph/cm2/s
              Error 1.16e-01 7.94e-02 7.05e-02 2.26e-01 1.96e-01 2.96e-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    1.528    0.043    -      -           6.08e-03 1.34e-04   43.920 57
CPL   1.236    0.179     145.9   82.1      8.21e-03 1.50e-03   35.770 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.282    0.100    -      -           2.59e-02 1.56e-03   58.260 57
CPL   0.536    0.470     103.9   47.6      5.92e-02 3.21e-02   49.530 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: 96.256000 sec.
T50 in the 50-300 keV band: 27.328000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  131.992   -2.008  129.984
T90    97.556    7.008  104.564
T50    29.788   43.780   73.568
Peak    1.000   62.300   63.300

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   61.6828  -2.6013 0.0071   17.7   37.5       2.2248    27.1  TRIG_00783479       
------------------------------------------
 
Foreground time interval of the image:
 -2.008  37.573 (delta_t =  39.581 [sec])
Background time interval of the image:
-254.627  -2.008 (delta_t = 252.619 [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   -2.008 sec. to  129.984 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.52760     ( -0.0429343   0.0429631 )
Norm@50keV  : 6.07997E-03    ( -0.000134096   0.000134096 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.92 using 59 PHA bins.
# Reduced chi-squared =         0.7706 for     57 degrees of freedom 
# Null hypothesis probability =   8.979082e-01
 
Photon flux (15-150 keV)    in 132 sec: 0.764793 ( -0.019131  0.0191995 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.58034e-06 ( -1.74549e-07  1.74738e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.008 sec. to  129.984 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23648     ( -0.182767   0.175712 )
Epeak [keV] : 145.922      ( -35.4166 128.865 )
Norm@50keV  : 8.21454E-03    ( -0.00133285   0.0016607 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.77 using 59 PHA bins.
# Reduced chi-squared =         0.6387 for     56 degrees of freedom 
# Null hypothesis probability =   9.839218e-01
 
Photon flux (15-150 keV)    in 132 sec: 0.746189 ( -0.021753  0.021879 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.4319e-06 ( -1.9738e-07  1.96746e-07 ) ergs/cm2
 
Band function
Time interval is from   -2.008 sec. to  129.984 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.24886   ( -0.17283   0.152082 )
beta        : -9.37038    ( 9.37166   19.3717 )
Epeak [keV] : 150.770      ( -19.7807 47.528 )
Norm@50keV   : 8.10856E-03    ( -0.00132785   0.00164976 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.80 using 59 PHA bins.
# Reduced chi-squared =         0.6509 for     55 degrees of freedom 
# Null hypothesis probability =   9.791254e-01
 
Photon flux (15-150 keV)    in 132 sec: 0.746199 (    ) 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]    : 16.8607  (  )
R^2/D10^2   : 5.50244E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         390.96 using 59 PHA bins.
# Reduced chi-squared =         6.8589 for     57 degrees of freedom 
# Null hypothesis probability =   2.612334e-51
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.215e-07   1.914e-08
25- 50  1.852e-06   5.874e-08
50-150  3.750e-06   1.525e-07
15-150  6.024e-06   1.551e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-8.59027      -200)
Norm        : 3.11714       (-0.0687371     0.0687371)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.05 using 59 PHA bins.
# Reduced chi-squared =         0.7377 for     57 degrees of freedom 
# Null hypothesis probability =   9.308129e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.025e-06   2.699e-08
25- 50  1.971e-06   5.082e-08
50-150  4.324e-06   1.049e-07
15-150  7.320e-06   1.894e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.11163        (-0.681626      0.736466)
R1^2/D10^2  : 0.688269        (-0.198976      0.306528)
kT2 [keV]   : 25.9474        (-1.86635      2.33673)
R2^2/D10^2  : 9.95156E-03    (-0.00273936   0.00325078)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.57 using 59 PHA bins.
# Reduced chi-squared =         0.7740 for     55 degrees of freedom 
# Null hypothesis probability =   8.893894e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.007e-07   7.953e-08
25- 50  1.929e-06   9.174e-08
50-150  4.504e-06   2.455e-07
15-150  7.334e-06   3.036e-07

Peak spectrum fit

Power-law model
Time interval is from   62.300 sec. to   63.300 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.28214     ( -0.100231   0.100112 )
Norm@50keV  : 2.58605E-02    ( -0.00155725   0.00155684 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.26 using 59 PHA bins.
# Reduced chi-squared =          1.022 for     57 degrees of freedom 
# Null hypothesis probability =   4.286517e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.07531 ( -0.18924  0.189421 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.5668e-07 ( -1.71075e-08  1.71788e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   62.300 sec. to   63.300 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.535580     ( -0.494868   0.444284 )
Epeak [keV] : 103.891      ( -22.2865 72.9985 )
Norm@50keV  : 5.92292E-02    ( -0.0226304   0.0415904 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.53 using 59 PHA bins.
# Reduced chi-squared =         0.8845 for     56 degrees of freedom 
# Null hypothesis probability =   7.165986e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.99117 ( -0.19616  0.19587 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.46088e-07 ( -1.854e-08  1.8538e-08 ) ergs/cm2
 
Band function
Time interval is from   62.300 sec. to   63.300 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.441623   ( -0.503928   0.957248 )
beta        : -1.88157    ( 1.90195   0.454115 )
Epeak [keV] : 94.9986      ( -38.5398 66.2135 )
Norm@50keV   : 6.69228E-02    ( -0.0302027   0.200796 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.95 using 59 PHA bins.
# Reduced chi-squared =         0.8900 for     55 degrees of freedom 
# Null hypothesis probability =   7.036673e-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]    : 17.4501  (-1.21023  1.32403)
R^2/D10^2   : 0.224931  (-0.0495469   0.0622183)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          80.64 using 59 PHA bins.
# Reduced chi-squared =          1.415 for     57 degrees of freedom 
# Null hypothesis probability =   2.135217e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.384e-08   1.550e-09
25- 50  6.253e-08   5.035e-09
50-150  1.370e-07   1.505e-08
15-150  2.134e-07   1.590e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-13.8349      -200)
Norm        : 12.7526       (-0.773719     0.773719)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.93 using 59 PHA bins.
# Reduced chi-squared =          1.279 for     57 degrees of freedom 
# Null hypothesis probability =   7.594486e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.176e-08   2.080e-09
25- 50  6.110e-08   4.750e-09
50-150  1.340e-07   3.056e-08
15-150  2.269e-07   3.320e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.22059        (-2.27544      3.8291)
R1^2/D10^2  : 1.91005        (-1.24716      4.87395)
kT2 [keV]   : 23.9460        (-3.77861      12.3841)
R2^2/D10^2  : 6.41204E-02    (-0.0509414   0.0439442)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.19 using 59 PHA bins.
# Reduced chi-squared =         0.9308 for     55 degrees of freedom 
# Null hypothesis probability =   6.208636e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.303e-08   9.636e-09
25- 50  6.021e-08   1.887e-08
50-150  1.592e-07   4.035e-08
15-150  2.425e-07   6.190e-08
Plot creation:
Sun Oct 29 00:08:54 EDT 2017