batgrbproduct analysis for trigger=775946

batgrbproduct Analysis for Trigger=775946

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Oct  4 01:01:52 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger775946/GCN5_download_cron
======================================================================

  Trigger: 00775946      Segment: 000

  BAT Trigger Time: 528691040   [s; MET]
      Trigger Stop: 528691368   [s; MET]
               UTC: 2017-10-03T02:37:00.219740    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 40.9097919316132   Dec: 61.4078722437967  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    8.67
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.67

  Flight Position:   [ source = BAT ]
    RA: 40.9097919316132   Dec: 61.4078722437967  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 40.7875173351195   Dec: 61.3659071920218  [deg; J2000]  
        { 02h 43m 09.0s , +61d 21' 57.3" }
         +/- 3.72007003749071 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.98767780979318 [arcmin] (formal 1-sigma fit error)
    SNR: 4.6563472064837
 
  Angular difference between Flight and Ground position is 4.322465 arcmin
 
  Partial Coding Fraction: 0.9921875    [ including projection effects ]

  Duration
     T90: 328 +/- 
        Measured from: 0
                   to: 328     [s; relative to TRIGTIME]
     T50: 328 +/- 
        Measured from: 0
                   to: 328     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 328 second)
        Measured from: 0     
                   to: 328     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 328     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.902941   0.712252  -0.084787  -0.271142
           0.105292   0.111320   0.103097   0.105537 [error]
 Peak      0.902941   0.712252  -0.084787  -0.271142
           0.105292   0.111320   0.103097   0.105537 [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 2.65e-07 2.24e-07 1.29e-07 1.10e-07 6.66e-07 7.28e-07   erg/cm2
              Error 4.85e-08 5.35e-08 6.22e-08 9.65e-08 1.57e-07 2.11e-07   erg/cm2
Peak flux Power-law 2.69e-02 1.27e-02 3.65e-03 1.32e-03 4.40e-02 4.45e-02   ph/cm2/s
              Error 5.02e-03 2.90e-03 1.71e-03 1.08e-03 7.63e-03 7.86e-03   ph/cm2/s
 
Fluence   Cutoff-PL 2.54e-07 2.80e-07 7.74e-08 3.16e-09 6.14e-07 6.17e-07   erg/cm2
              Error 5.37e-08 7.41e-08 7.71e-08 2.36e-08 1.29e-07 1.30e-07   erg/cm2
Peak flux Cutoff-PL 2.52e-02 1.60e-02 2.39e-03 5.19e-05 4.36e-02 4.36e-02   ph/cm2/s
              Error 5.63e-03 4.07e-03 1.44e-03 3.38e-04 7.31e-03 7.31e-03   ph/cm2/s
 
Fluence        Band 2.54e-07 2.74e-07 8.50e-08 4.53e-09 6.19e-07 6.18e-07   erg/cm2
              Error 5.37e-08 5.75e-08 5.98e-08 -------- -------- --------   erg/cm2
Peak flux      Band 2.52e-02 1.60e-02 2.38e-03 5.21e-05 4.36e-02 4.36e-02   ph/cm2/s
              Error 5.61e-03 4.04e-03 1.71e-03 -------- 7.24e-03 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.799    0.422    -      -           1.84e-04 6.71e-05   81.910 57
CPL   0.653    2.120      20.9    0.0      4.84e-03 0.00e+00   77.080 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.799    0.422    -      -           1.84e-04 6.71e-05   81.910 57
CPL   0.653    2.120      20.9    0.0      4.84e-03 0.00e+00   77.080 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  328.000    0.000  328.000
T90   328.000    0.000  328.000
T50   328.000    0.000  328.000
Peak  328.000    0.000  328.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   40.7875 +61.3659 0.0411   10.4  -93.5       1.5182     4.7  TRIG_00775946       
------------------------------------------
 
Foreground time interval of the image:
  0.000 140.220 (delta_t = 140.220 [sec])
141.000 328.000 (delta_t = 187.000 [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
Multiple GTIs in the spectrum
tstart tstop
0.000000 140.220000
141.000000 328.000000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.79867     ( -0.381052   0.463507 )
Norm@50keV  : 1.84397E-04    ( -6.51157e-05   6.91404e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.91 using 59 PHA bins.
# Reduced chi-squared =          1.437 for     57 degrees of freedom 
# Null hypothesis probability =   1.698526e-02
 
Photon flux (15-150 keV)    in 327.2 sec: 4.39833E-02 ( -0.0076059  0.00764721 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.65567e-07 ( -1.50187e-07  1.6443e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 140.220000
141.000000 328.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.653413     ( -2.82026   1.41921 )
Epeak [keV] : 20.9046      (   )
Norm@50keV  : 4.84229E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.08 using 59 PHA bins.
# Reduced chi-squared =          1.376 for     56 degrees of freedom 
# Null hypothesis probability =   3.238037e-02
 
Photon flux (15-150 keV)    in 327.2 sec: 4.36282E-02 ( -0.0073032  0.007318 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.14442e-07 ( -1.20943e-07  1.37211e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 140.220000
141.000000 328.000000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.473310   ( -1.57431   2.76905 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 21.7618      ( -13.0922 8.12279 )
Norm@50keV   : 6.40120E-03    ( -0.00639602   0.383897 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.05 using 59 PHA bins.
# Reduced chi-squared =          1.401 for     55 degrees of freedom 
# Null hypothesis probability =   2.649411e-02
 
Photon flux (15-150 keV)    in 327.2 sec: 4.36025E-02 ( 6.9564  -0.0071526 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.18676e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 6.83710  (-1.14436  1.24385)
R^2/D10^2   : 9.74866E-02  (-0.0485948   0.110388)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          78.82 using 59 PHA bins.
# Reduced chi-squared =          1.383 for     57 degrees of freedom 
# Null hypothesis probability =   2.941430e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.336e-07   7.174e-08
25- 50  3.055e-07   1.011e-07
50-150  4.646e-08   2.634e-08
15-150  5.856e-07   1.644e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 23.7449       (-7.12756      10.6979)
Norm        : 0.453155       (-0.137808     0.226049)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.67 using 59 PHA bins.
# Reduced chi-squared =          1.363 for     57 degrees of freedom 
# Null hypothesis probability =   3.573496e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.623e-07   6.078e-08
25- 50  2.600e-07   8.224e-08
50-150  1.024e-07   7.087e-08
15-150  6.247e-07   1.847e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.07207        (-1.8638      2.34888)
R1^2/D10^2  : 17.1877        (-46.6891      -46.9968)
kT2 [keV]   : 7.96506        (-1.53157      2.14446)
R2^2/D10^2  : 4.51956E-02    (-0.0342448   0.0568073)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.40 using 59 PHA bins.
# Reduced chi-squared =          1.353 for     55 degrees of freedom 
# Null hypothesis probability =   4.181882e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.393e-07   1.198e-07
25- 50  2.960e-07   1.698e-07
50-150  7.602e-08   5.476e-08
15-150  6.113e-07   3.205e-07

Peak spectrum fit

Power-law model
Time interval is from  141.000 sec. to  328.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.79867     ( -0.381052   0.463507 )
Norm@50keV  : 1.84397E-04    ( -6.51157e-05   6.91404e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.91 using 59 PHA bins.
# Reduced chi-squared =          1.437 for     57 degrees of freedom 
# Null hypothesis probability =   1.698526e-02
 
Photon flux (15-150 keV)    in 327.2 sec: 4.39833E-02 ( -0.0076059  0.00764721 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.65567e-07 ( -1.50187e-07  1.6443e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  141.000 sec. to  328.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.653413     ( -2.82026   1.41921 )
Epeak [keV] : 20.9046      (   )
Norm@50keV  : 4.84229E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.08 using 59 PHA bins.
# Reduced chi-squared =          1.376 for     56 degrees of freedom 
# Null hypothesis probability =   3.238037e-02
 
Photon flux (15-150 keV)    in 327.2 sec: 4.36282E-02 ( -0.0073032  0.007318 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.14442e-07 ( -1.20943e-07  1.37211e-07 ) ergs/cm2
 
Band function
Time interval is from  141.000 sec. to  328.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.473310   ( -1.57431   2.76905 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 21.7618      ( -12.98 8.12284 )
Norm@50keV   : 6.40120E-03    ( -0.00639602   0.383897 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.05 using 59 PHA bins.
# Reduced chi-squared =          1.401 for     55 degrees of freedom 
# Null hypothesis probability =   2.649411e-02
 
Photon flux (15-150 keV)    in 327.2 sec: 4.36025E-02 ( 6.9564  -0.0071526 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.18676e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 6.83710  (-1.14436  1.24385)
R^2/D10^2   : 9.74866E-02  (-0.0485948   0.110388)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          78.82 using 59 PHA bins.
# Reduced chi-squared =          1.383 for     57 degrees of freedom 
# Null hypothesis probability =   2.941430e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.336e-07   6.222e-08
25- 50  3.055e-07   9.914e-08
50-150  4.646e-08   2.793e-08
15-150  5.856e-07   1.590e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 23.7449       (-7.12756      10.6979)
Norm        : 0.453155       (-0.137808     0.226049)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.67 using 59 PHA bins.
# Reduced chi-squared =          1.363 for     57 degrees of freedom 
# Null hypothesis probability =   3.573496e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.623e-07   5.955e-08
25- 50  2.600e-07   8.223e-08
50-150  1.024e-07   6.846e-08
15-150  6.247e-07   1.868e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.07207        (-1.80686      2.43248)
R1^2/D10^2  : 17.1877        (-46.6891      -46.9968)
kT2 [keV]   : 7.96506        (-1.53157      2.14446)
R2^2/D10^2  : 4.51956E-02    (-0.0342448   0.0568053)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.40 using 59 PHA bins.
# Reduced chi-squared =          1.353 for     55 degrees of freedom 
# Null hypothesis probability =   4.181882e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.393e-07   1.180e-07
25- 50  2.960e-07   1.706e-07
50-150  7.602e-08   5.232e-08
15-150  6.113e-07   3.292e-07
Plot creation:
Wed Oct  4 01:29:44 EDT 2017