batgrbproduct analysis for trigger=748858

batgrbproduct Analysis for Trigger=748858

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Apr 20 04:36:13 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger748858/GCN5_download_cron
======================================================================

  Trigger: 00748858      Segment: 000

  BAT Trigger Time: 514280632   [s; MET]
      Trigger Stop: 514280696   [s; MET]
               UTC: 2017-04-19T07:43:33.068180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 199.853016115085   Dec: 15.4710556087952  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.16
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.16

  Flight Position:   [ source = BAT ]
    RA: 199.853016115085   Dec: 15.4710556087952  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 199.804656266239   Dec: 15.4423384302278  [deg; J2000]  
        { 13h 19m 13.1s , +15d 26' 32.4" }
         +/- 2.69428082639496 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.49114006206732 [arcmin] (formal 1-sigma fit error)
    SNR: 7.38244139170245
 
  Angular difference between Flight and Ground position is 3.284824 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 61 +/- 15.2315462117278
        Measured from: 1.00000011920929
                   to: 62.0000001192093     [s; relative to TRIGTIME]
     T50: 33 +/- 14.422205101856
        Measured from: 10.0000001192093
                   to: 43.0000001192093     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 7     
                   to: 8     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2     
                   to: 65     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.184792   0.160783   0.026998   0.017493
           0.040630   0.042125   0.036690   0.031787 [error]
 Peak      0.010497   0.010961   0.005241  -0.001314
           0.005022   0.005260   0.004502   0.003837 [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 4.57e-08 5.54e-08 4.87e-08 7.36e-08 1.76e-07 2.24e-07   erg/cm2
              Error 1.63e-08 1.86e-08 2.91e-08 9.69e-08 7.02e-08 1.28e-07   erg/cm2
Peak flux Power-law 9.93e-02 6.84e-02 3.09e-02 1.94e-02 2.08e-01 2.17e-01   ph/cm2/s
              Error 6.38e-02 3.98e-02 3.11e-02 3.48e-02 1.16e-01 1.24e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.36e-08 6.05e-08 5.29e-10 1.10e-16 1.15e-07 1.15e-07   erg/cm2
              Error 1.89e-08 2.74e-08 5.13e-09 1.48e-11 3.39e-08 3.40e-08   erg/cm2
Peak flux Cutoff-PL 7.36e-02 1.02e-01 3.40e-02 1.45e-03 2.11e-01 2.11e-01   ph/cm2/s
              Error 7.59e-02 5.69e-02 3.73e-02 9.94e-03 1.12e-01 1.12e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 8.23e-02 9.71e-02 3.56e-02 2.07e-03 2.16e-01 2.11e-01   ph/cm2/s
              Error 7.07e-02 -------- 3.61e-02 -------- 1.62e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.187    0.583    -      -           2.79e-04 1.25e-04   58.810 57
CPL  -9.965   -1.122      25.9    3.3      2.58e+05 7.41e+05   51.120 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.122    1.042    -      -           1.31e-03 9.56e-04   67.930 57
CPL  -0.947    1.055      40.5    0.0      7.77e-02 0.00e+00   65.840 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   67.000   -2.000   65.000
T90    61.000    1.000   62.000
T50    33.000   10.000   43.000
Peak    1.000    7.000    8.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  199.8047 +15.4423 0.0261   14.2   12.6       0.5868     7.4  TRIG_00748858       
------------------------------------------
 
Foreground time interval of the image:
 -2.000  65.000 (delta_t =  67.000 [sec])
Background time interval of the image:
-239.000  -2.000 (delta_t = 237.000 [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   -2.000 sec. to   65.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.18679     ( -0.535689   0.630998 )
Norm@50keV  : 2.79157E-04    ( -0.000124434   0.000126436 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.81 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     57 degrees of freedom 
# Null hypothesis probability =   4.088425e-01
 
Photon flux (15-150 keV)    in 67 sec: 4.58999E-02 ( -0.0140083  0.0140592 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.7563e-07 ( -6.6052e-08  7.43017e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.000 sec. to   65.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -9.96466     ( 9.96684   7.72198 )
Epeak [keV] : 25.8521      ( -3.07928 3.43472 )
Norm@50keV  : 2.58450E+05    ( -260735   1.22048e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.12 using 59 PHA bins.
# Reduced chi-squared =         0.9129 for     56 degrees of freedom 
# Null hypothesis probability =   6.596371e-01
 
Photon flux (15-150 keV)    in 67 sec: 4.30171E-02 4.27865E-02 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.92029e-18 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   -2.000 sec. to   65.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -4.18021   -5 )
beta        : -4.56990    ( 4.57662   2.09004 )
Epeak [keV] : 26.1306      ( -4.71231 4.59599 )
Norm@50keV   : 54.1130    ( -14.702   138.969 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.83 using 59 PHA bins.
# Reduced chi-squared =         0.9424 for     55 degrees of freedom 
# Null hypothesis probability =   5.964182e-01
 
Photon flux (15-150 keV)    in 67 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]    : 6.71641  (-1.4405  1.95899)
R^2/D10^2   : 0.112122  (-0.112122   0.19018)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.35 using 59 PHA bins.
# Reduced chi-squared =         0.9534 for     57 degrees of freedom 
# Null hypothesis probability =   5.753024e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.205e-08   3.154e-08
25- 50  6.570e-08   3.870e-08
50-150  9.353e-09   8.281e-09
15-150  1.271e-07   7.708e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 34.8831       (-17.0647      58.644)
Norm        : 0.331587       (-0.146742     0.280158)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.45 using 59 PHA bins.
# Reduced chi-squared =          1.008 for     57 degrees of freedom 
# Null hypothesis probability =   4.582384e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.847e-08   2.369e-08
25- 50  5.989e-08   3.464e-08
50-150  3.962e-08   3.410e-08
15-150  1.480e-07   9.770e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 200.000        (-200      -200)
R1^2/D10^2  : 3.71430E-06        (-3.71124e-06      -3.71124e-06)
kT2 [keV]   : 6.49203        (-1.41434      1.82708)
R2^2/D10^2  : 0.124656    (-0.0807034   0.21923)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.35 using 59 PHA bins.
#Fit statistic : Chi-Squared =          52.90 using 59 PHA bins.
# Reduced chi-squared =         0.9881 for     55 degrees of freedom 
# Reduced chi-squared =         0.9619 for     55 degrees of freedom 
# Null hypothesis probability =   4.995650e-01
# Null hypothesis probability =   5.551222e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.224e-08   7.986e-02
25- 50  6.543e-08   6.841e-01
50-150  9.185e-09   1.575e+01
15-150  1.269e-07   1.710e+01

Peak spectrum fit

Power-law model
Time interval is from    7.000 sec. to    8.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.12155     ( -0.849965   1.23321 )
Norm@50keV  : 1.31032E-03    ( -0.000950936   0.000960086 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.93 using 59 PHA bins.
# Reduced chi-squared =          1.192 for     57 degrees of freedom 
# Null hypothesis probability =   1.523328e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.207997 ( -0.115533  0.116129 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.19864e-08 ( -7.56196e-09  8.79633e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    7.000 sec. to    8.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.946828     ( 1.00084   3.11028 )
Epeak [keV] : 40.5318      (   )
Norm@50keV  : 7.76533E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.84 using 59 PHA bins.
# Reduced chi-squared =          1.176 for     56 degrees of freedom 
# Null hypothesis probability =   1.730762e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.211198 ( -0.112164  0.11163 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.18731e-08 ( -6.38019e-09  7.5119e-09 ) ergs/cm2
 
Band function
Time interval is from    7.000 sec. to    8.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.770499   ( -7.40145   -0.597832 )
beta        : -10.0000    ( 10   0 )
Epeak [keV] : 39.9383      ( -23.2074 162.92 )
Norm@50keV   : 6.44458E-02    ( -0.0642112   61.9698 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.85 using 59 PHA bins.
# Reduced chi-squared =          1.197 for     55 degrees of freedom 
# Null hypothesis probability =   1.500698e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.216182 ( 6.78382  -0.216182 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.20116e-08 ( -1.20046e-08  -6.54981e-09 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.6592  (-4.47036  5.7441)
R^2/D10^2   : 9.21794E-02  (-0.0921885   0.574309)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.81 using 59 PHA bins.
# Reduced chi-squared =          1.155 for     57 degrees of freedom 
# Null hypothesis probability =   1.982864e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.173e-09   1.424e-09
25- 50  5.897e-09   3.768e-09
50-150  3.692e-09   2.929e-09
15-150  1.176e-08   8.170e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 50.2010       (-47.6163      -47.6163)
Norm        : 1.25624       (-0.74308     1.78401)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.84 using 59 PHA bins.
# Reduced chi-squared =          1.173 for     57 degrees of freedom 
# Null hypothesis probability =   1.748923e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.075e-09   2.074e-09
25- 50  4.422e-09   3.029e-09
50-150  4.309e-09   3.888e-09
15-150  1.181e-08   8.460e-09
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.88347        (-3.64589      -3.64589)
R1^2/D10^2  : 1.11952        (-1.2643      -1.2643)
kT2 [keV]   : 11.6696        (-11.4421      -11.4421)
R2^2/D10^2  : 5.89231E-02    (-0.064098   0.550572)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.66 using 59 PHA bins.
# Reduced chi-squared =          1.194 for     55 degrees of freedom 
# Null hypothesis probability =   1.539241e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.573e-09   1.536e-09
25- 50  5.444e-09   3.861e-09
50-150  4.142e-09   3.234e-09
15-150  1.216e-08   9.660e-09
Plot creation:
Thu Apr 20 05:01:03 EDT 2017