batgrbproduct Analysis for Trigger=666827

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Dec 10 02:15:42 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger666827/GCN5_download_cron
======================================================================

  Trigger: 00666827      Segment: 000

  BAT Trigger Time: 471334128   [s; MET]
      Trigger Stop: 471334976   [s; MET]
               UTC: 2015-12-09T06:08:32.472220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 282.088497848896   Dec: -2.42140587685968  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.73
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.73

  Flight Position:   [ source = BAT ]
    RA: 282.088497848896   Dec: -2.42140587685968  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 282.097936950162   Dec: -2.41288387382138  [deg; J2000]  
        { 18h 48m 23.5s , -02d 24' 46.4" }
         +/- 3.90232214312177 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.49962974653156 [arcmin] (formal 1-sigma fit error)
    SNR: 4.34881635334345
 
  Angular difference between Flight and Ground position is 0.762644 arcmin
 
  Partial Coding Fraction: 0.8046875    [ including projection effects ]

  Duration
     T90: 888.511999964714 +/- 150.334654442426
        Measured from: -64.8799998760223
                   to: 823.632000088692     [s; relative to TRIGTIME]
     T50: 488.079999923706 +/- 143.0984847867
        Measured from: 138.572000145912
                   to: 626.652000069618     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 518.939999997616     
                   to: 519.939999997616     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -89.0040000081062     
                   to: 875.360000014305     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.659139   1.346711   0.443802  -0.422208
           0.209362   0.209792   0.180598   0.155785 [error]
 Peak      0.014521   0.010437   0.011382   0.009629
           0.006865   0.006774   0.005870   0.005085 [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 4.50e-07 5.28e-07 4.47e-07 6.40e-07 1.65e-06 2.06e-06   erg/cm2
              Error 9.10e-08 9.65e-08 1.50e-07 4.03e-07 3.56e-07 6.12e-07   erg/cm2
Peak flux Power-law 9.87e-02 1.04e-01 7.69e-02 9.22e-02 3.15e-01 3.71e-01   ph/cm2/s
              Error 1.04e-01 7.91e-02 6.40e-02 7.50e-01 2.05e-01 6.77e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.31e-07 6.40e-07 2.94e-07 2.68e-08 1.39e-06 1.39e-06   erg/cm2
              Error 9.95e-08 1.39e-07 2.17e-07 1.85e-07 3.50e-07 4.04e-07   erg/cm2
Peak flux Cutoff-PL 1.04e-01 1.05e-01 7.43e-02 8.28e-02 3.16e-01 3.67e-01   ph/cm2/s
              Error 9.95e-02 7.90e-02 6.38e-02 3.89e-01 1.55e-01 --------   ph/cm2/s
 
Fluence        Band 4.29e-07 6.33e-07 3.10e-07 1.89e-07 1.47e-06 1.57e-06   erg/cm2
              Error 1.15e-07 -------- -------- -------- -------- --------   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    2.241    0.322    -      -           1.81e-04 4.53e-05   68.620 57
CPL   0.326    2.364      30.0    0.0      3.16e-03 0.00e+00   64.410 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.437    1.390    -      -           2.56e-03 1.41e-03   61.070 57
CPL   1.568    0.000    9999.4    0.0      2.44e-03 0.00e+00   61.120 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  964.364  -89.004  875.360
T90   888.512  -64.880  823.632
T50   488.080  138.572  626.652
Peak    1.000  518.940  519.940

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  282.0979  -2.4129 0.0443   17.8  -91.7       3.1229     4.3  TRIG_00666827       
------------------------------------------
 
Foreground time interval of the image:
-14.699 852.601 (delta_t = 867.300 [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
Time interval is from  -89.004 sec. to  875.360 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.24139     ( -0.303697   0.340517 )
Norm@50keV  : 1.81161E-04    ( -4.55404e-05   4.5061e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.62 using 59 PHA bins.
# Reduced chi-squared =          1.204 for     57 degrees of freedom 
# Null hypothesis probability =   1.393477e-01
 
Photon flux (15-150 keV)    in 964.4 sec: 3.06596E-02 ( -0.00513286  0.00513618 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.65279e-06 ( -3.46574e-07  3.654e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -89.004 sec. to  875.360 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.325531     ( -3.04686   1.68063 )
Epeak [keV] : 30.0267      (   )
Norm@50keV  : 3.15847E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.41 using 59 PHA bins.
# Reduced chi-squared =          1.150 for     56 degrees of freedom 
# Null hypothesis probability =   2.060418e-01
 
Photon flux (15-150 keV)    in 964.4 sec: 2.95663E-02 ( -0.0050587  0.0051159 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.3897e-06 ( -3.09293e-07  3.90447e-07 ) ergs/cm2
 
Band function
Time interval is from  -89.004 sec. to  875.360 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.86727   ( -6.5733   -4.86727 )
beta        : -2.78126    ( -0.812077   0.515936 )
Epeak [keV] : 24.4415      ( -4.84629 4.09637 )
Norm@50keV   : 37.0249    ( -6.01508   162.666 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.50 using 59 PHA bins.
# Reduced chi-squared =          1.154 for     55 degrees of freedom 
# Null hypothesis probability =   2.019712e-01
 
Photon flux (15-150 keV)    in 964.4 sec: 2.97880E-02 ( 6.97021  -0.0050733 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.47052e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 7.75004  (-1.22454  1.46808)
R^2/D10^2   : 4.01046E-02  (-0.0201433   0.0397559)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.82 using 59 PHA bins.
# Reduced chi-squared =          1.155 for     57 degrees of freedom 
# Null hypothesis probability =   1.980998e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.099e-07   1.303e-07
25- 50  6.784e-07   1.866e-07
50-150  1.603e-07   8.215e-08
15-150  1.249e-06   3.446e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 40.2949       (-13.4081      24.3312)
Norm        : 0.201294       (-0.0521157     0.0763259)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.25 using 59 PHA bins.
# Reduced chi-squared =          1.145 for     57 degrees of freedom 
# Null hypothesis probability =   2.117783e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.469e-07   9.716e-08
25- 50  5.898e-07   1.455e-07
50-150  4.600e-07   2.398e-07
15-150  1.497e-06   4.554e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 14.9893        (-16.6518      -16.6518)
R1^2/D10^2  : 1.19216E-03        (-0.000704706      0.0521532)
kT2 [keV]   : 6.07538        (-6.30102      -6.30102)
R2^2/D10^2  : 7.95844E-02    (-0.0453365   0.532545)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.72 using 59 PHA bins.
#Fit statistic : Chi-Squared =          63.65 using 59 PHA bins.
# Reduced chi-squared =          1.159 for     55 degrees of freedom 
# Reduced chi-squared =          1.157 for     55 degrees of freedom 
# Null hypothesis probability =   1.964834e-01
# Null hypothesis probability =   1.981481e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.356e-07   2.659e-07
25- 50  6.032e-07   3.368e-07
50-150  3.535e-07   2.419e-07
15-150  1.392e-06   8.086e-07

Peak spectrum fit

Power-law model
Time interval is from  518.940 sec. to  519.940 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.43737     ( -1.43329   1.34758 )
Norm@50keV  : 2.56297E-03    ( -0.00155624   0.00127254 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.07 using 59 PHA bins.
# Reduced chi-squared =          1.071 for     57 degrees of freedom 
# Null hypothesis probability =   3.319408e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.314634 ( -0.252383  0.157055 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.46315e-08 ( -2.46315e-08  1.55113e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  518.940 sec. to  519.940 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56785     (     )
Epeak [keV] : 9999.36      (   )
Norm@50keV  : 2.43515E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.12 using 59 PHA bins.
# Reduced chi-squared =          1.091 for     56 degrees of freedom 
# Null hypothesis probability =   2.972367e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.316484 ( -0.154448  0.155141 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.33153e-08 ( -1.3168e-08  1.69497e-08 ) ergs/cm2
 
Band function
Time interval is from  518.940 sec. to  519.940 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.10992   ( 1.12502   1.12502 )
beta        : -1.42050    ( 1.42633   1.42633 )
Epeak [keV] : 46.2233      ( -43.3624 -43.3624 )
Norm@50keV   : 4.98389E-03    ( -0.00501626   0.516518 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.07 using 59 PHA bins.
# Reduced chi-squared =          1.110 for     55 degrees of freedom 
# Null hypothesis probability =   2.670532e-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]    : 7.12491  (-3.06335  -7.12491)
R^2/D10^2   : 0.508099  (-0.508099   4.60597)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.67 using 59 PHA bins.
# Reduced chi-squared =          1.117 for     57 degrees of freedom 
# Null hypothesis probability =   2.532900e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.219e-09   2.852e-09
25- 50  5.978e-09   4.264e-09
50-150  1.056e-09   1.215e-09
15-150  1.125e-08   7.715e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-199.363      -199.363)
Norm        : 1.26300       (-0.626452     0.626478)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.65 using 59 PHA bins.
# Reduced chi-squared =          1.082 for     57 degrees of freedom 
# Null hypothesis probability =   3.133725e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.145e-09   2.138e-09
25- 50  6.050e-09   4.055e-09
50-150  1.327e-08   8.980e-09
15-150  2.246e-08   1.563e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.03058        (-2.7194      3.74823)
R1^2/D10^2  : 0.885293        (-0.810249      7.2459)
kT2 [keV]   : 199.363        (-199.363      -199.363)
R2^2/D10^2  : 8.21550E-05    (-5.18598e-05   0.00207929)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.86 using 59 PHA bins.
# Reduced chi-squared =          1.034 for     55 degrees of freedom 
# Null hypothesis probability =   4.056806e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.414e-09   2.747e-09
25- 50  5.238e-09   3.374e-09
50-150  2.216e-08   6.465e-09
15-150  3.181e-08   1.322e-08
Plot creation:
Thu Dec 10 02:21:47 EST 2015