batgrbproduct Analysis for Trigger=687123

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon May 23 13:11:02 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger687123/GCN5_download_cron
======================================================================

  Trigger: 00687123      Segment: 000

  BAT Trigger Time: 485553723.644   [s; MET]
      Trigger Stop: 485553723.708   [s; MET]
               UTC: 2016-05-21T20:01:47.342220    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 293.749746391611   Dec: 21.9107592491394  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.93
     Image Trigger?:     NO
     Rate S/N Ratio:     14.2828568570857  [ if not an image trigger ]
     Image S/N Ratio:    6.93

  Flight Position:   [ source = BAT ]
    RA: 293.749746391611   Dec: 21.9107592491394  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 293.738543943893   Dec: 21.8954708377696  [deg; J2000]  
        { 19h 34m 57.3s , +21d 53' 43.7" }
         +/- 2.87815243081556 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.4270098557825 [arcmin] (formal 1-sigma fit error)
    SNR: 6.71802376246275
 
  Angular difference between Flight and Ground position is 1.109216 arcmin
 
  Partial Coding Fraction: 0.4804688    [ including projection effects ]

  Duration
     T90: 0.0640000104904175 +/- 
        Measured from: 0
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     T50: 0.0640000104904175 +/- 
        Measured from: 0
                   to: 0.0640000104904175     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.0640000104904175 second)
        Measured from: 0     
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.016693   0.018694   0.002838  -0.000935
           0.003646   0.003680   0.002344   0.001704 [error]
 Peak      0.016693   0.018694   0.002838  -0.000935
           0.003646   0.003680   0.002344   0.001704 [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 5.45e-09 3.65e-09 1.60e-09 9.59e-10 1.12e-08 1.15e-08   erg/cm2
              Error 1.71e-09 1.31e-09 9.56e-10 1.10e-09 3.64e-09 4.01e-09   erg/cm2
Peak flux Power-law 2.85e+00 1.07e+00 2.32e-01 6.02e-02 4.19e+00 4.22e+00   ph/cm2/s
              Error 9.04e-01 3.76e-01 1.37e-01 6.72e-02 1.26e+00 1.27e+00   ph/cm2/s
 
Fluence   Cutoff-PL 5.08e-09 8.34e-09 7.93e-10 4.62e-13 1.42e-08 1.42e-08   erg/cm2
              Error 1.97e-09 2.72e-09 1.16e-09 2.33e-11 3.96e-09 3.96e-09   erg/cm2
Peak flux Cutoff-PL 2.48e+00 2.46e+00 1.36e-01 4.27e-05 5.08e+00 5.08e+00   ph/cm2/s
              Error 1.02e+00 7.69e-01 1.88e-01 2.05e-03 1.33e+00 1.33e+00   ph/cm2/s
 
Fluence        Band 5.17e-09 8.18e-09 1.17e-09 1.01e-11 1.45e-08 1.45e-08   erg/cm2
              Error 1.89e-09 2.71e-09 1.19e-09 2.03e-10 3.93e-09 3.93e-09   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    3.225    0.527    -      -           1.29e-02 6.40e-03   65.270 57
CPL  -4.570   -0.128      28.8    5.3      1.62e+03 7.07e+06   50.770 56
 
The chi2 of BB fit is 51.58 which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.225    0.527    -      -           1.29e-02 6.40e-03   65.270 57
CPL  -4.570   -0.128      28.8    5.3      1.62e+03 7.07e+06   50.770 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    0.064    0.000    0.064
T90     0.064    0.000    0.064
T50     0.064    0.000    0.064
Peak    0.064    0.000    0.064

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  293.7385 +21.8955 0.0287   34.8 -131.6       0.0402     6.7  TRIG_00687123       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.064 (delta_t =   0.064 [sec])
Background time interval of the image:
-168.543  -3.644 (delta_t = 164.899 [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    0.000 sec. to    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.22499     ( -0.42629   0.628025 )
Norm@50keV  : 1.28711E-02    ( -0.00617378   0.0066271 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.27 using 59 PHA bins.
# Reduced chi-squared =          1.145 for     57 degrees of freedom 
# Null hypothesis probability =   2.112778e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 4.19233 ( -1.2632  1.26277 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.1168e-08 ( -3.57632e-09  3.70756e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.57010     ( 3.29886   3.04283 )
Epeak [keV] : 28.8188      ( -5.71091 4.84353 )
Norm@50keV  : 1618.97    ( -1589.1   1.41297e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.77 using 59 PHA bins.
# Reduced chi-squared =         0.9067 for     56 degrees of freedom 
# Null hypothesis probability =   6.724412e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 5.07929 ( -1.34026  1.3226 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.42179e-08 ( -4.02458e-09  3.9049e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.54353   ( -4.28851   -4.54353 )
beta        : -9.94555    ( 9.94555   18.2645 )
Epeak [keV] : 28.8243      ( -4.33402 4.64972 )
Norm@50keV   : 1548.68    ( -382.881   7923.05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.84 using 59 PHA bins.
# Reduced chi-squared =         0.9243 for     55 degrees of freedom 
# Null hypothesis probability =   6.343994e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.4529e-08 ( -1.45285e-08  -4.12294e-09 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 7.05639  (-1.25277  1.26602)
R^2/D10^2   : 10.6879  (-5.65208   13.3341)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.58 using 59 PHA bins.
# Reduced chi-squared =         0.9048 for     57 degrees of freedom 
# Null hypothesis probability =   6.779915e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.517e-09   2.483e-09
25- 50  7.674e-09   3.579e-09
50-150  1.309e-09   9.936e-10
15-150  1.450e-08   6.656e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 20.5957       (-5.906      7.74282)
Norm        : 58.5851       (-22.2067     36.7235)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.74 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     57 degrees of freedom 
# Null hypothesis probability =   4.478108e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.959e-09   2.401e-09
25- 50  5.337e-09   2.582e-09
50-150  1.678e-09   1.257e-09
15-150  1.297e-08   4.972e-09
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 0.744941        (-7.05659      -7.05659)
R1^2/D10^2  : 3.93652E+07        (-3.62113e+07      -3.62113e+07)
kT2 [keV]   : 7.08907        (-1.27521      1.31452)
R2^2/D10^2  : 10.4184    (-5.74085   13.5034)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.58 using 59 PHA bins.
#Fit statistic : Chi-Squared =          51.55 using 59 PHA bins.
# Reduced chi-squared =         0.9377 for     55 degrees of freedom 
# Reduced chi-squared =         0.9373 for     55 degrees of freedom 
# Null hypothesis probability =   6.062466e-01
# Null hypothesis probability =   6.072033e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.518e-09   2.143e+00
25- 50  7.671e-09   1.977e+01
50-150  1.307e-09   4.173e+02
15-150  1.450e-08   4.918e+02

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.22499     ( -0.42629   0.628025 )
Norm@50keV  : 1.28711E-02    ( -0.00617378   0.0066271 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.27 using 59 PHA bins.
# Reduced chi-squared =          1.145 for     57 degrees of freedom 
# Null hypothesis probability =   2.112778e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 4.19233 ( -1.2632  1.26277 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.1168e-08 ( -3.57632e-09  3.70756e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.57010     ( 3.29886   3.04283 )
Epeak [keV] : 28.8188      ( -5.71091 4.84353 )
Norm@50keV  : 1618.97    ( -1589.1   1.41297e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.77 using 59 PHA bins.
# Reduced chi-squared =         0.9067 for     56 degrees of freedom 
# Null hypothesis probability =   6.724412e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 5.07929 ( -1.34026  1.3226 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.42179e-08 ( -4.02458e-09  3.9049e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.54353   ( -4.28851   -4.54353 )
beta        : -9.94555    ( 9.94555   18.2645 )
Epeak [keV] : 28.8243      ( -4.33402 4.64972 )
Norm@50keV   : 1548.68    ( -382.881   7923.05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.84 using 59 PHA bins.
# Reduced chi-squared =         0.9243 for     55 degrees of freedom 
# Null hypothesis probability =   6.343994e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.4529e-08 ( -1.45285e-08  -4.12294e-09 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 7.05639  (-1.25277  1.26602)
R^2/D10^2   : 10.6879  (-5.65208   13.3341)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.58 using 59 PHA bins.
# Reduced chi-squared =         0.9048 for     57 degrees of freedom 
# Null hypothesis probability =   6.779915e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.517e-09   2.770e-09
25- 50  7.674e-09   3.533e-09
50-150  1.309e-09   9.782e-10
15-150  1.450e-08   6.819e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 20.5957       (-5.906      7.74282)
Norm        : 58.5851       (-22.2067     36.7235)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.74 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     57 degrees of freedom 
# Null hypothesis probability =   4.478108e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.959e-09   2.381e-09
25- 50  5.337e-09   2.304e-09
50-150  1.678e-09   1.293e-09
15-150  1.297e-08   4.720e-09
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 0.744941        (-7.05659      -7.05659)
R1^2/D10^2  : 3.93652E+07        (-3.62113e+07      -3.62113e+07)
kT2 [keV]   : 7.08907        (-1.27521      1.31452)
R2^2/D10^2  : 10.4184    (-5.74085   13.5034)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.58 using 59 PHA bins.
#Fit statistic : Chi-Squared =          51.55 using 59 PHA bins.
# Reduced chi-squared =         0.9377 for     55 degrees of freedom 
# Reduced chi-squared =         0.9373 for     55 degrees of freedom 
# Null hypothesis probability =   6.062466e-01
# Null hypothesis probability =   6.072033e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.518e-09   2.261e+00
25- 50  7.671e-09   1.880e+01
50-150  1.307e-09   4.176e+02
15-150  1.450e-08   4.794e+02
Plot creation:
Mon May 23 13:16:30 EDT 2016