batgrbproduct analysis for trigger=765081

batgrbproduct Analysis for Trigger=765081

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Jul 29 17:50:47 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger765081/GCN5_download_cron
======================================================================

  Trigger: 00765081      Segment: 000

  BAT Trigger Time: 522953897.408   [s; MET]
      Trigger Stop: 522953899.456   [s; MET]
               UTC: 2017-07-28T16:57:57.968060    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 274.368255189849   Dec: -16.7217173369935  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.63
     Image Trigger?:     NO
     Rate S/N Ratio:     10.1488915650922  [ if not an image trigger ]
     Image S/N Ratio:    8.63

  Flight Position:   [ source = BAT ]
    RA: 274.368255189849   Dec: -16.7217173369935  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 274.360431885198   Dec: -16.7212421220277  [deg; J2000]  
        { 18h 17m 26.5s , -16d 43' 16.5" }
         +/- 2.2728455778149 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.04516723159554 [arcmin] (formal 1-sigma fit error)
    SNR: 9.41310202782811
 
  Angular difference between Flight and Ground position is 0.450453 arcmin
 
  Partial Coding Fraction: 0.8828125    [ including projection effects ]

  Duration
     T90: 9.33999997377396 +/- 1.06662084403458
        Measured from: -4.08799988031387
                   to: 5.25200009346008     [s; relative to TRIGTIME]
     T50: 4.77599996328354 +/- 2.85796637959823
        Measured from: -2.58399987220764
                   to: 2.1920000910759     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.819999992847443     
                   to: 1.81999999284744     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.43999999761581     
                   to: 5.45200002193451     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.289471   0.047768   0.031346   0.031859
           0.025019   0.021202   0.018816   0.019181 [error]
 Peak      0.051509   0.010949   0.012805  -0.003713
           0.008236   0.006688   0.005817   0.006247 [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 8.39e-08 2.40e-08 3.72e-09 6.58e-10 1.12e-07 1.12e-07   erg/cm2
              Error 1.40e-08 1.01e-08 3.58e-09 1.29e-09 2.23e-08 2.25e-08   erg/cm2
Peak flux Power-law 4.74e-01 1.28e-01 1.86e-02 3.06e-03 6.23e-01 6.24e-01   ph/cm2/s
              Error 1.30e-01 6.93e-02 2.60e-02 8.85e-03 1.71e-01 1.71e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.01e-08 1.38e-08 4.03e-11 1.12e-16 1.04e-07 1.04e-07   erg/cm2
              Error 1.61e-08 1.41e-08 3.46e-09 0.00e+00 1.55e-08 1.97e-08   erg/cm2
Peak flux Cutoff-PL 4.77e-01 1.22e-01 1.61e-02 2.49e-03 6.17e-01 6.19e-01   ph/cm2/s
              Error 1.28e-01 9.55e-02 2.61e-02 8.85e-03 1.70e-01 1.71e-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    4.691    0.736    -      -           2.99e-04 2.24e-04   71.390 57
CPL   1.000    0.000      50.0    0.0      4.34e-03 0.00e+00  131.270 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.787    1.076    -      -           1.21e-03 1.18e-03   48.560 57
CPL  -9.257    0.476      16.9    3.1      1.57e+08 2.32e+09   47.870 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    9.892   -4.440    5.452
T90     9.340   -4.088    5.252
T50     4.776   -2.584    2.192
Peak    1.000    0.820    1.820

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  274.3604 -16.7212 0.0205   15.9   57.4       0.4222     9.4  TRIG_00765081       
------------------------------------------
 
Foreground time interval of the image:
 -4.440   5.452 (delta_t =   9.892 [sec])
Background time interval of the image:
-239.408  -4.440 (delta_t = 234.968 [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   -4.440 sec. to    5.452 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.69081     ( -0.684466   0.787719 )
Norm@50keV  : 2.98795E-04    ( -0.000169313   0.000278157 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.39 using 59 PHA bins.
# Reduced chi-squared =          1.252 for     57 degrees of freedom 
# Null hypothesis probability =   9.510986e-02
 
Photon flux (15-150 keV)    in 9.892 sec: 0.344333 ( -0.0585596  0.0586694 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12062e-07 ( -2.16421e-08  2.28682e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -4.440 sec. to    5.452 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 4.33723E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         131.27 using 59 PHA bins.
# Reduced chi-squared =         2.3441 for     56 degrees of freedom 
# Null hypothesis probability =   5.544671e-08
 
Photon flux (15-150 keV)    in 9.892 sec: 0.342283 ( -0.056622  0.056683 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03964e-07 ( -1.8563e-08  1.24382e-08 ) ergs/cm2
 
Band function
Time interval is from   -4.440 sec. to    5.452 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -8.74365   ( 8.74365   8.74365 )
beta        : -4.69081    ( -0.787757   0.684487 )
Epeak [keV] : 2.36415      ( -2.36415 -2.36415 )
Norm@50keV   : 4.06105E-02    ( -0.0230094   0.0378055 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.39 using 59 PHA bins.
# Reduced chi-squared =          1.298 for     55 degrees of freedom 
# Null hypothesis probability =   6.782724e-02
 
Photon flux (15-150 keV)    in 9.892 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]    : 2.95561  (-0.436976  0.528349)
R^2/D10^2   : 53.9013  (-53.9013   103.128)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.18 using 59 PHA bins.
# Reduced chi-squared =          1.231 for     57 degrees of freedom 
# Null hypothesis probability =   1.127629e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.081e-08   4.779e-08
25- 50  1.256e-08   7.691e-09
50-150  1.791e-11   1.845e-11
15-150  1.034e-07   5.683e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 6.11901       (-1.41593      2.05132)
Norm        : 40.6314       (-22.2818     55.3815)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.30 using 59 PHA bins.
# Reduced chi-squared =          1.233 for     57 degrees of freedom 
# Null hypothesis probability =   1.108847e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.828e-08   4.020e-08
25- 50  1.707e-08   9.538e-09
50-150  2.233e-10   2.054e-10
15-150  1.056e-07   4.824e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.89994        (-0.429502      0.51185)
R1^2/D10^2  : 60.1521        (-39.8198      113.9)
kT2 [keV]   : 88.2880        (-66.068      -88.6246)
R2^2/D10^2  : 9.04774E-05    (-8.13133e-05   0.00182186)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.39 using 59 PHA bins.
# Reduced chi-squared =          1.171 for     55 degrees of freedom 
# Null hypothesis probability =   1.809556e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.030e-08   4.929e-08
25- 50  1.538e-08   8.291e-09
50-150  6.966e-08   5.455e-08
15-150  1.753e-07   9.532e-08

Peak spectrum fit

Power-law model
Time interval is from    0.820 sec. to    1.820 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.78722     ( -0.936522   1.21475 )
Norm@50keV  : 1.21308E-03    ( -0.000875977   0.00149267 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.56 using 59 PHA bins.
# Reduced chi-squared =         0.8519 for     57 degrees of freedom 
# Null hypothesis probability =   7.793867e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.622814 ( -0.170315  0.170784 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.29969e-08 ( -7.72446e-09  9.25585e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.820 sec. to    1.820 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -9.25712     ( 9.27415   10.227 )
Epeak [keV] : 16.8812      ( -3.63041 2.49755 )
Norm@50keV  : 1.56634E+08    ( -1.72574e+08   4.46323e+09 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.87 using 59 PHA bins.
# Reduced chi-squared =         0.8549 for     56 degrees of freedom 
# Null hypothesis probability =   7.717548e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.616556 ( -0.164942  0.175889 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.29953e-08 ( -9.5514e-09  9.2232e-09 ) ergs/cm2
 
Band function
Time interval is from    0.820 sec. to    1.820 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.14141   ( 1.68739   1.68739 )
beta        : -4.78535    ( 4.13738   1.2353 )
Epeak [keV] : 14.9173      ( -3.12491 75.4235 )
Norm@50keV   : 7738.95    ( -7753.28   1.4923e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.69 using 59 PHA bins.
# Reduced chi-squared =         0.8670 for     55 degrees of freedom 
# Null hypothesis probability =   7.474594e-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]    : 3.36156  (-0.741213  0.957423)
R^2/D10^2   : 42.3491  (-42.3491   148.586)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.44 using 59 PHA bins.
# Reduced chi-squared =         0.8498 for     57 degrees of freedom 
# Null hypothesis probability =   7.829874e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.552e-08   8.700e-09
25- 50  3.311e-09   2.225e-09
50-150  1.275e-11   1.450e-11
15-150  1.884e-08   1.088e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 7.89114       (-2.9065      6.38477)
Norm        : 35.3108       (-35.3108     88.4764)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.98 using 59 PHA bins.
# Reduced chi-squared =         0.8592 for     57 degrees of freedom 
# Null hypothesis probability =   7.662961e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.483e-08   8.505e-09
25- 50  4.504e-09   3.013e-09
50-150  1.517e-10   1.698e-10
15-150  1.948e-08   1.162e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.15734        (-0.732877      0.892852)
R1^2/D10^2  : 57.8114        (-43.6478      97.4071)
kT2 [keV]   : 29.2326        (-17.6609      -29.2668)
R2^2/D10^2  : 2.97377E-03    (-0.00293987   0.0348628)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.65 using 59 PHA bins.
# Reduced chi-squared =         0.7937 for     55 degrees of freedom 
# Null hypothesis probability =   8.648131e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.515e-08   8.995e-09
25- 50  5.025e-09   2.708e-09
50-150  1.503e-08   1.017e-08
15-150  3.520e-08   1.777e-08
Plot creation:
Sat Jul 29 17:56:47 EDT 2017