batgrbproduct analysis for trigger=874334

batgrbproduct Analysis for Trigger=874334

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Dec  3 02:26:23 EST 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger874334/GCN5_download_cron
======================================================================

  Trigger: 00874334      Segment: 000

  BAT Trigger Time: 565425406.528   [s; MET]
      Trigger Stop: 565425408.576   [s; MET]
               UTC: 2018-12-02T06:36:24.513620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 280.744790864843   Dec: 27.9509889258757  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.16
     Image Trigger?:     NO
     Rate S/N Ratio:     10.9087121146357  [ if not an image trigger ]
     Image S/N Ratio:    7.16

  Flight Position:   [ source = BAT ]
    RA: 280.744790864843   Dec: 27.9509889258757  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 280.736772914072   Dec: 27.9757931465511  [deg; J2000]  
        { 18h 42m 56.8s , +27d 58' 32.9" }
         +/- 2.00864299409093 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.04429953472037 [arcmin] (formal 1-sigma fit error)
    SNR: 11.2305276002754
 
  Angular difference between Flight and Ground position is 1.547723 arcmin
 
  Partial Coding Fraction: 0.9609375    [ including projection effects ]

  Duration
     T90: 6.55599987506866 +/- 0.608831638857355
        Measured from: 0.0240001678466797
                   to: 6.58000004291534     [s; relative to TRIGTIME]
     T50: 4.46799993515015 +/- 0.702270590915197
        Measured from: 1.05600011348724
                   to: 5.52400004863739     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.692000031471252     
                   to: 1.69200003147125     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.25600004196167     
                   to: 6.75600004196167     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.128831   0.169958   0.122782   0.016381
           0.020769   0.021177   0.018319   0.016010 [error]
 Peak      0.040396   0.046913   0.022325   0.005660
           0.008099   0.008419   0.007174   0.006127 [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 3.76e-08 6.48e-08 8.51e-08 2.27e-07 2.49e-07 4.15e-07   erg/cm2
              Error 8.01e-09 8.99e-09 1.73e-08 9.54e-08 4.11e-08 1.11e-07   erg/cm2
Peak flux Power-law 3.62e-01 3.07e-01 1.77e-01 1.52e-01 9.13e-01 9.99e-01   ph/cm2/s
              Error 1.01e-01 6.17e-02 5.48e-02 8.91e-02 1.84e-01 2.08e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.50e-08 6.95e-08 8.64e-08 9.18e-08 2.36e-07 2.83e-07   erg/cm2
              Error 9.12e-09 1.16e-08 1.90e-08 1.11e-07 4.48e-08 1.43e-07   erg/cm2
Peak flux Cutoff-PL 2.98e-01 3.83e-01 1.68e-01 1.78e-02 8.65e-01 8.66e-01   ph/cm2/s
              Error 1.26e-01 9.44e-02 7.00e-02 6.04e-02 1.87e-01 1.91e-01   ph/cm2/s
 
Fluence        Band 3.53e-08 6.82e-08 8.66e-08 1.28e-07 2.41e-07 3.19e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.96e-01 3.84e-01 1.65e-01 3.77e-02 8.71e-01 8.84e-01   ph/cm2/s
              Error -------- -------- -------- 4.75e-02 -------- 2.03e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.606    0.243    -      -           3.80e-03 5.76e-04   46.710 57
CPL   1.016    0.914      77.3  -23.1      7.90e-03 1.27e-02   45.410 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.793    0.345    -      -           6.64e-03 1.60e-03   67.860 57
CPL  -0.254    2.362      45.5   29.1      1.01e-01 2.00e+00   64.250 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    7.012   -0.256    6.756
T90     6.556    0.024    6.580
T50     4.468    1.056    5.524
Peak    1.000    0.692    1.692

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  280.7368 +27.9758 0.0171   12.1  141.1       0.4320    11.2  TRIG_00874334       
------------------------------------------
 
Foreground time interval of the image:
 -0.256   6.756 (delta_t =   7.012 [sec])
Background time interval of the image:
-239.528  -0.256 (delta_t = 239.272 [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   -0.256 sec. to    6.756 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.60648     ( -0.238801   0.24675 )
Norm@50keV  : 3.80240E-03    ( -0.00058152   0.000570968 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.71 using 59 PHA bins.
# Reduced chi-squared =         0.8195 for     57 degrees of freedom 
# Null hypothesis probability =   8.327905e-01
 
Photon flux (15-150 keV)    in 7.012 sec: 0.489611 ( -0.0676311  0.0676539 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.49157e-07 ( -4.0654e-08  4.16032e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.256 sec. to    6.756 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.01564     ( -1.06849   0.760222 )
Epeak [keV] : 77.2812      ( -31.0044 -77.28 )
Norm@50keV  : 7.90420E-03    ( -0.00451563   0.0209709 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.41 using 59 PHA bins.
# Reduced chi-squared =         0.8110 for     56 degrees of freedom 
# Null hypothesis probability =   8.431012e-01
 
Photon flux (15-150 keV)    in 7.012 sec: 0.478464 ( -0.069575  0.069579 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.3619e-07 ( -4.38594e-08  4.57112e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.256 sec. to    6.756 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.01671   ( -5.27352   1.05973 )
beta        : -10.0000    ( 10   2.13163e-14 )
Epeak [keV] : 77.3354      ( -26.5619 -77.3354 )
Norm@50keV   : 7.89271E-03    ( -0.00455457   0.0209889 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.41 using 59 PHA bins.
# Reduced chi-squared =         0.8257 for     55 degrees of freedom 
# Null hypothesis probability =   8.182454e-01
 
Photon flux (15-150 keV)    in 7.012 sec: 0.478509 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.41283e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.5143  (-2.35446  2.8185)
R^2/D10^2   : 7.91054E-02  (-0.0385959   0.0772289)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.45 using 59 PHA bins.
# Reduced chi-squared =         0.9903 for     57 degrees of freedom 
# Null hypothesis probability =   4.957970e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.146e-08   5.554e-09
25- 50  7.699e-08   1.600e-08
50-150  9.088e-08   2.922e-08
15-150  1.893e-07   3.709e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 162.720       (-77.0131      -161.474)
Norm        : 2.01916       (-0.290178     0.372114)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.64 using 59 PHA bins.
# Reduced chi-squared =         0.8007 for     57 degrees of freedom 
# Null hypothesis probability =   8.600263e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.609e-08   2.001e-08
25- 50  6.767e-08   3.692e-08
50-150  1.380e-07   8.057e-08
15-150  2.418e-07   1.368e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.63610        (-1.91466      2.52154)
R1^2/D10^2  : 1.07686        (-0.778501      4.40317)
kT2 [keV]   : 20.7545        (-5.10359      9.93471)
R2^2/D10^2  : 1.39773E-02    (-0.0106078   0.026238)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.65 using 59 PHA bins.
# Reduced chi-squared =         0.7936 for     55 degrees of freedom 
# Null hypothesis probability =   8.648314e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.698e-08   2.050e-08
25- 50  6.603e-08   3.386e-08
50-150  1.329e-07   7.850e-08
15-150  2.360e-07   1.225e-07

Peak spectrum fit

Power-law model
Time interval is from    0.692 sec. to    1.692 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.79253     ( -0.330695   0.359342 )
Norm@50keV  : 6.64384E-03    ( -0.00162118   0.00157324 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.86 using 59 PHA bins.
# Reduced chi-squared =          1.191 for     57 degrees of freedom 
# Null hypothesis probability =   1.536851e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.912870 ( -0.183665  0.183665 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.11839e-08 ( -1.47689e-08  1.54009e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.692 sec. to    1.692 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.254371     ( -2.85799   1.86675 )
Epeak [keV] : 45.4901      ( -10.3922 47.7441 )
Norm@50keV  : 0.101254    ( -0.102435   3.90578 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.25 using 59 PHA bins.
# Reduced chi-squared =          1.147 for     56 degrees of freedom 
# Null hypothesis probability =   2.098762e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.864851 ( -0.186436  0.187669 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.18865e-08 ( -1.2904e-08  1.64081e-08 ) ergs/cm2
 
Band function
Time interval is from    0.692 sec. to    1.692 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.186007   ( -1.02272   2.88587 )
beta        : -10.00000    ( 10   5.55472e-06 )
Epeak [keV] : 45.5779      ( -10.3444 47.227 )
Norm@50keV   : 9.29415E-02    ( -0.0929415   3.96616 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.26 using 59 PHA bins.
# Reduced chi-squared =          1.168 for     55 degrees of freedom 
# Null hypothesis probability =   1.840053e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.870734 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.36486e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.2602  (-1.99086  2.44234)
R^2/D10^2   : 0.299940  (-0.156738   0.313693)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.80 using 59 PHA bins.
# Reduced chi-squared =          1.137 for     57 degrees of freedom 
# Null hypothesis probability =   2.232739e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.980e-09   2.789e-09
25- 50  2.325e-08   9.064e-09
50-150  1.695e-08   7.867e-09
15-150  4.817e-08   1.529e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 87.0869       (-40.057      -87.1071)
Norm        : 4.25679       (-1.04122     1.3833)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.01 using 59 PHA bins.
# Reduced chi-squared =          1.158 for     57 degrees of freedom 
# Null hypothesis probability =   1.935959e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.109e-08   3.256e-09
25- 50  1.863e-08   7.095e-09
50-150  2.779e-08   2.153e-08
15-150  5.751e-08   3.276e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.34525        (-3.51579      -3.51579)
R1^2/D10^2  : 9.29923        (-8.13189      -8.13189)
kT2 [keV]   : 12.3291        (-2.70866      -12.4683)
R2^2/D10^2  : 0.198144    (-0.188818   0.311622)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.49 using 59 PHA bins.
# Reduced chi-squared =          1.154 for     55 degrees of freedom 
# Null hypothesis probability =   2.020462e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.698e-09   4.748e-09
25- 50  2.142e-08   1.238e-08
50-150  1.928e-08   1.212e-08
15-150  5.040e-08   2.917e-08
Plot creation:
Mon Dec  3 02:29:42 EST 2018