batgrbproduct analysis for trigger=791922

batgrbproduct Analysis for Trigger=791922

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Nov 24 07:27:27 EST 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger791922/GCN5_download_cron
======================================================================

  Trigger: 00791922      Segment: 000

  BAT Trigger Time: 533139307.648   [s; MET]
      Trigger Stop: 533139309.696   [s; MET]
               UTC: 2017-11-23T14:14:47.601920    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 186.190266485784   Dec: 32.5309103636178  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.65
     Image Trigger?:     NO
     Rate S/N Ratio:     10.5830052442584  [ if not an image trigger ]
     Image S/N Ratio:    7.65

  Flight Position:   [ source = BAT ]
    RA: 186.190266485784   Dec: 32.5309103636178  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 186.198437353051   Dec: 32.5034858951003  [deg; J2000]  
        { 12h 24m 47.6s , +32d 30' 12.5" }
         +/- 2.4108009043155 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.52932026779885 [arcmin] (formal 1-sigma fit error)
    SNR: 8.6531374126829
 
  Angular difference between Flight and Ground position is 1.696603 arcmin
 
  Partial Coding Fraction: 0.8671875    [ including projection effects ]

  Duration
     T90: 58.4800000786781 +/- 27.0612413239722
        Measured from: -0.479999899864197
                   to: 58.0000001788139     [s; relative to TRIGTIME]
     T50: 17.8240000605583 +/- 33.1759652712105
        Measured from: 1.34400010108948
                   to: 19.1680001616478     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.26800000667572     
                   to: 0.73199999332428     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.39200001955032     
                   to: 60.2879999876022     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.162711   0.317109   0.220779   0.044226
           0.047624   0.048995   0.042067   0.035963 [error]
 Peak      0.030076   0.033122   0.027940   0.008986
           0.006349   0.006900   0.005959   0.004801 [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 5.52e-08 1.11e-07 1.73e-07 5.98e-07 4.83e-07 9.37e-07   erg/cm2
              Error 1.85e-08 2.25e-08 4.15e-08 3.21e-07 1.02e-07 3.50e-07   erg/cm2
Peak flux Power-law 2.98e-01 2.72e-01 1.72e-01 1.67e-01 8.11e-01 9.09e-01   ph/cm2/s
              Error 9.70e-02 5.45e-02 5.21e-02 1.04e-01 1.60e-01 1.85e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.47e-08 1.11e-07 1.74e-07 5.48e-07 4.84e-07 8.87e-07   erg/cm2
              Error 1.97e-08 1.81e-08 4.32e-08 5.37e-07 8.04e-08 4.43e-07   erg/cm2
Peak flux Cutoff-PL 3.08e-01 2.73e-01 1.66e-01 1.53e-01 8.13e-01 8.99e-01   ph/cm2/s
              Error 9.73e-02 5.49e-02 5.27e-02 1.15e-01 1.60e-01 1.79e-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    1.355    0.337    -      -           8.02e-04 1.52e-04   45.810 57
CPL   1.273    0.000     442.1    0.0      8.83e-04 0.00e+00   45.850 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.661    0.395    -      -           6.19e-03 1.40e-03   55.470 57
CPL   2.907    0.922     273.3    0.0      1.57e-03 0.00e+00   53.700 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: 5.888000 sec.
T50 in the 50-300 keV band: 2.496000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   61.680   -1.392   60.288
T90    58.480   -0.480   58.000
T50    17.824    1.344   19.168
Peak    1.000   -0.268    0.732

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  186.1984 +32.5035 0.0223   22.2 -142.9       0.5718     8.7  TRIG_00791922       
------------------------------------------
 
Foreground time interval of the image:
 -1.392  28.353 (delta_t =  29.745 [sec])
Background time interval of the image:
-239.648 -86.098 (delta_t = 153.550 [sec])
-84.648 -62.608 (delta_t =  22.040 [sec])
-61.648  -1.392 (delta_t =  60.256 [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   -1.392 sec. to   60.288 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.35491     ( -0.339906   0.334714 )
Norm@50keV  : 8.02302E-04    ( -0.000151974   0.000151266 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.81 using 59 PHA bins.
# Reduced chi-squared =         0.8037 for     57 degrees of freedom 
# Null hypothesis probability =   8.558397e-01
 
Photon flux (15-150 keV)    in 61.68 sec: 9.67527E-02 ( -0.0184963  0.0185489 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.82787e-07 ( -1.01512e-07  1.03279e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.392 sec. to   60.288 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.27346     (     )
Epeak [keV] : 442.086      (   )
Norm@50keV  : 8.83094E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.85 using 59 PHA bins.
# Reduced chi-squared =         0.8187 for     56 degrees of freedom 
# Null hypothesis probability =   8.315051e-01
 
Photon flux (15-150 keV)    in 61.68 sec: 9.67852E-02 ( -0.018857  0.0184728 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.84052e-07 ( -1.10795e-07  4.99189e-08 ) ergs/cm2
 
Band function
Time interval is from   -1.392 sec. to   60.288 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99267   ( -4.99267   -4.99267 )
beta        : -1.39660    ( -0.420574   0.36122 )
Epeak [keV] : 22.5552      ( -22.5552 13.5196 )
Norm@50keV   : 138.900    ( -25.9348   421484 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.70 using 59 PHA bins.
# Reduced chi-squared =         0.8309 for     55 degrees of freedom 
# Null hypothesis probability =   8.099876e-01
 
Photon flux (15-150 keV)    in 61.68 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]    : 16.4231  (-4.29617  6.13652)
R^2/D10^2   : 8.05178E-03  (-0.00524661   0.0148626)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.67 using 59 PHA bins.
# Reduced chi-squared =         0.9591 for     57 degrees of freedom 
# Null hypothesis probability =   5.631287e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.753e-08   1.075e-08
25- 50  1.184e-07   4.147e-08
50-150  2.254e-07   8.928e-08
15-150  3.713e-07   1.203e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.358       (-86.029      -199.362)
Norm        : 0.399107       (-0.075046     0.0752438)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.95 using 59 PHA bins.
# Reduced chi-squared =         0.8236 for     57 degrees of freedom 
# Null hypothesis probability =   8.264018e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.130e-08   3.556e-08
25- 50  1.179e-07   6.831e-08
50-150  2.586e-07   1.491e-07
15-150  4.378e-07   2.558e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.70386        (-3.17553      4.26431)
R1^2/D10^2  : 7.59905E-02        (-0.0573902      0.11834)
kT2 [keV]   : 35.7628        (-31.23      -35.755)
R2^2/D10^2  : 5.08863E-04    (-0.000461056   0.00288291)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.12 using 59 PHA bins.
# Reduced chi-squared =         0.8204 for     55 degrees of freedom 
# Null hypothesis probability =   8.265051e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.444e-08   3.331e-08
25- 50  1.169e-07   6.335e-08
50-150  3.233e-07   1.828e-07
15-150  4.946e-07   2.585e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.268 sec. to    0.732 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.66135     ( -0.379499   0.410456 )
Norm@50keV  : 6.19093E-03    ( -0.00144657   0.00136123 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.47 using 59 PHA bins.
# Reduced chi-squared =         0.9731 for     57 degrees of freedom 
# Null hypothesis probability =   5.327889e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.811434 ( -0.160389  0.160427 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.75154e-08 ( -1.38686e-08  1.41849e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.268 sec. to    0.732 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.90671     ( -1.54472   0.299091 )
Epeak [keV] : 273.258      (   )
Norm@50keV  : 1.56953E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.70 using 59 PHA bins.
# Reduced chi-squared =         0.9589 for     56 degrees of freedom 
# Null hypothesis probability =   5.623778e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.812763 ( -0.160349  0.159844 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.73582e-08 ( -1.36692e-08  1.37737e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.268 sec. to    0.732 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.35365   ( 1.35372   1.35372 )
beta        : -1.66084    ( 1.66131   0.379318 )
Epeak [keV] : 19.1987      ( -19.2256 -19.2256 )
Norm@50keV   : 1.41964E-02    ( -0.0141967   0.212933 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.47 using 59 PHA bins.
# Reduced chi-squared =          1.008 for     55 degrees of freedom 
# Null hypothesis probability =   4.570182e-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]    : 12.3871  (-3.92481  6.25664)
R^2/D10^2   : 0.166346  (-0.1234   0.485063)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.55 using 59 PHA bins.
# Reduced chi-squared =          1.220 for     57 degrees of freedom 
# Null hypothesis probability =   1.229097e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.409e-09   2.359e-09
25- 50  1.766e-08   7.550e-09
50-150  1.663e-08   8.955e-09
15-150  3.970e-08   1.858e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 194.158       (-112.86      -181.03)
Norm        : 3.26375       (-0.662833     0.936017)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.83 using 59 PHA bins.
# Reduced chi-squared =         0.9969 for     57 degrees of freedom 
# Null hypothesis probability =   4.816042e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.155e-09   4.693e-09
25- 50  1.564e-08   8.825e-09
50-150  3.400e-08   1.930e-08
15-150  5.779e-08   3.247e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.08327        (-2.55451      3.73297)
R1^2/D10^2  : 3.60389        (-3.06373      110.585)
kT2 [keV]   : 29.8452        (-13.2466      -30.0758)
R2^2/D10^2  : 6.98086E-03    (-0.00639509   0.0255188)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.35 using 59 PHA bins.
# Reduced chi-squared =          1.006 for     55 degrees of freedom 
# Null hypothesis probability =   4.612378e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.033e-08   5.915e-09
25- 50  1.237e-08   6.585e-09
50-150  3.815e-08   2.325e-08
15-150  6.086e-08   3.215e-08
Plot creation:
Fri Nov 24 07:35:12 EST 2017