batgrbproduct analysis for trigger=899979

batgrbproduct Analysis for Trigger=899979

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Apr 23 21:09:17 EDT 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger899979/GCN5_download_cron
======================================================================

  Trigger: 00899979      Segment: 000

  BAT Trigger Time: 577666552   [s; MET]
      Trigger Stop: 577666656   [s; MET]
               UTC: 2019-04-22T22:55:29.215560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 182.124237954621   Dec: -60.2379723458902  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.54
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    10.54

  Flight Position:   [ source = BAT ]
    RA: 182.124237954621   Dec: -60.2379723458902  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 182.12607657604   Dec: -60.1673756604565  [deg; J2000]  
        { 12h 08m 30.3s , -60d 10' 02.6" }
         +/- 2.41075148339966 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.25674778773826 [arcmin] (formal 1-sigma fit error)
    SNR: 8.6533908297234
 
  Angular difference between Flight and Ground position is 4.236156 arcmin
 
  Partial Coding Fraction: 0.8203125    [ including projection effects ]

  Duration
     T90: 263.231999874115 +/- 54.9702775769705
        Measured from: 17.8960001468658
                   to: 281.128000020981     [s; relative to TRIGTIME]
     T50: 87.7680000066757 +/- 23.5040535390637
        Measured from: 105.624000072479
                   to: 193.392000079155     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 174.472000002861     
                   to: 175.472000002861     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 6.38800001144409     
                   to: 359.483999967575     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.981166   4.444711   2.678438   0.666195
           0.147556   0.151834   0.131383   0.115092 [error]
 Peak      0.094363   0.122516   0.089510   0.026144
           0.009715   0.010632   0.009507   0.007451 [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 1.15e-06 1.80e-06 2.12e-06 4.84e-06 6.48e-06 9.90e-06   erg/cm2
              Error 8.58e-08 7.76e-08 1.33e-07 6.65e-07 3.04e-07 7.63e-07   erg/cm2
Peak flux Power-law 8.81e-01 8.63e-01 5.92e-01 6.38e-01 2.59e+00 2.97e+00   ph/cm2/s
              Error 1.39e-01 8.39e-02 7.74e-02 1.70e-01 2.44e-01 2.89e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.16e-06 1.80e-06 2.12e-06 4.45e-06 6.45e-06 9.51e-06   erg/cm2
              Error 9.03e-08 7.97e-08 1.38e-07 -------- 3.29e-07 1.11e-06   erg/cm2
Peak flux Cutoff-PL 8.60e-01 8.76e-01 5.98e-01 5.33e-01 2.58e+00 2.87e+00   ph/cm2/s
              Error 1.59e-01 9.75e-02 8.27e-02 -------- 2.54e-01 3.89e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 8.41e-01 8.84e-01 6.04e-01 4.70e-01 2.57e+00 2.80e+00   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    1.763    0.084    -      -           1.99e-03 8.97e-05   34.520 57
CPL   1.751    0.318     970.5    0.0      2.02e-03 0.00e+00   34.560 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.545    0.171    -      -           2.05e-02 2.06e-03   48.530 57
CPL   1.405    0.707     208.1    0.0      2.42e-02 1.77e-02   48.370 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: 61.312000 sec.
T50 in the 50-300 keV band: 19.840000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  353.096    6.388  359.484
T90   263.232   17.896  281.128
T50    87.768  105.624  193.392
Peak    1.000  174.472  175.472

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  182.1261 -60.1674 0.0221   15.9  132.8      10.8507     8.7  TRIG_00899979       
------------------------------------------
 
Foreground time interval of the image:
  6.388 359.484 (delta_t = 353.096 [sec])
Background time interval of the image:
-10.799   6.388 (delta_t =  17.187 [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    6.388 sec. to  359.484 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.76284     ( -0.0837513   0.084603 )
Norm@50keV  : 1.98892E-03    ( -9.00223e-05   8.94664e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.52 using 59 PHA bins.
# Reduced chi-squared =         0.6056 for     57 degrees of freedom 
# Null hypothesis probability =   9.919486e-01
 
Photon flux (15-150 keV)    in 353.1 sec: 0.270221 ( -0.0118836  0.0119278 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.47571e-06 ( -3.03029e-07  3.04907e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    6.388 sec. to  359.484 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75055     ( -0.256995   0.378024 )
Epeak [keV] : 970.550      (   )
Norm@50keV  : 2.01846E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.56 using 59 PHA bins.
# Reduced chi-squared =         0.6172 for     56 degrees of freedom 
# Null hypothesis probability =   9.892242e-01
 
Photon flux (15-150 keV)    in 353.1 sec: 0.270217 ( -0.012013  0.011796 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.44676e-06 ( -3.18143e-07  3.39435e-07 ) ergs/cm2
 
Band function
Time interval is from    6.388 sec. to  359.484 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.17895   ( 1.17174   5.84564 )
beta        : -1.79751    ( 1.79785   0.109075 )
Epeak [keV] : 42.0558      ( -41.5397 88.9988 )
Norm@50keV   : 4.91891E-03    ( -0.00317613   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.92 using 59 PHA bins.
# Reduced chi-squared =         0.6168 for     55 degrees of freedom 
# Null hypothesis probability =   9.886747e-01
 
Photon flux (15-150 keV)    in 353.1 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]    : 12.4005  (  )
R^2/D10^2   : 5.42559E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         181.91 using 59 PHA bins.
# Reduced chi-squared =         3.1913 for     57 degrees of freedom 
# Null hypothesis probability =   5.779943e-15
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.244e-07   5.402e-08
25- 50  2.041e-06   9.604e-08
50-150  1.928e-06   2.046e-07
15-150  4.593e-06   2.348e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 120.868       (-22.3391      28.7273)
Norm        : 1.12509       (-0.0647554     0.0764578)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.56 using 59 PHA bins.
# Reduced chi-squared =         0.7292 for     57 degrees of freedom 
# Null hypothesis probability =   9.379572e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.034e-06   7.945e-08
25- 50  1.853e-06   1.123e-07
50-150  3.319e-06   8.905e-07
15-150  6.206e-06   9.728e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.87397        (-0.837781      0.879902)
R1^2/D10^2  : 0.360196        (-0.124101      0.217009)
kT2 [keV]   : 27.8759        (-4.66159      7.34362)
R2^2/D10^2  : 2.23185E-03    (-0.00120766   0.00207836)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.63 using 59 PHA bins.
#Fit statistic : Chi-Squared =          37.24 using 59 PHA bins.
# Reduced chi-squared =         0.8842 for     55 degrees of freedom 
# Reduced chi-squared =         0.6771 for     55 degrees of freedom 
# Null hypothesis probability =   7.149445e-01
# Null hypothesis probability =   9.681864e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.055e-06   4.050e-07
25- 50  1.680e-06   4.472e-07
50-150  3.064e-06   7.078e-07
15-150  5.799e-06   1.319e-06

Peak spectrum fit

Power-law model
Time interval is from  174.472 sec. to  175.472 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54458     ( -0.168946   0.172487 )
Norm@50keV  : 2.05015E-02    ( -0.00206964   0.00204501 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.53 using 59 PHA bins.
# Reduced chi-squared =         0.8513 for     57 degrees of freedom 
# Null hypothesis probability =   7.803921e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.59131 ( -0.24436  0.244531 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.93154e-07 ( -2.13967e-08  2.16798e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  174.472 sec. to  175.472 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40451     ( -0.684312   0.730309 )
Epeak [keV] : 208.079      ( -208.057 -208.057 )
Norm@50keV  : 2.42255E-02    ( -0.00605079   0.0293976 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.37 using 59 PHA bins.
# Reduced chi-squared =         0.8638 for     56 degrees of freedom 
# Null hypothesis probability =   7.556238e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.57506 ( -0.25431  0.25312 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.90985e-07 ( -1.199e-08  2.3276e-08 ) ergs/cm2
 
Band function
Time interval is from  174.472 sec. to  175.472 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.37079   ( -0.245731   0.572629 )
beta        : -9.34877    ( 9.36848   19.3685 )
Epeak [keV] : 179.965      ( -94.5405 -180.521 )
Norm@50keV   : 2.51591E-02    ( -0.0104987   0.0465784 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.38 using 59 PHA bins.
# Reduced chi-squared =         0.8797 for     55 degrees of freedom 
# Null hypothesis probability =   7.237099e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.56553 (    ) 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]    : 14.2708  (-1.72599  2.00853)
R^2/D10^2   : 0.343196  (-0.126274   0.196378)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.47 using 59 PHA bins.
# Reduced chi-squared =          1.342 for     57 degrees of freedom 
# Null hypothesis probability =   4.357708e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.473e-08   2.720e-09
25- 50  5.585e-08   7.690e-09
50-150  7.561e-08   1.579e-08
15-150  1.462e-07   1.820e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-74.554      -199.363)
Norm        : 10.5441       (-0.985823     0.986185)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.60 using 59 PHA bins.
# Reduced chi-squared =         0.8526 for     57 degrees of freedom 
# Null hypothesis probability =   7.781413e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.626e-08   1.417e-08
25- 50  5.051e-08   1.524e-08
50-150  1.108e-07   5.191e-08
15-150  1.875e-07   7.878e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.71696        (-1.58538      2.61472)
R1^2/D10^2  : 11.0986        (-8.83531      63.7683)
kT2 [keV]   : 20.7271        (-3.95142      8.08301)
R2^2/D10^2  : 8.10082E-02    (-0.0569723   0.0949908)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.55 using 59 PHA bins.
# Reduced chi-squared =         0.9008 for     55 degrees of freedom 
# Null hypothesis probability =   6.823019e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.786e-08   1.297e-08
25- 50  4.569e-08   1.431e-08
50-150  1.082e-07   3.279e-08
15-150  1.817e-07   4.872e-08
Plot creation:
Tue Apr 23 21:12:54 EDT 2019