batgrbproduct analysis for trigger=889748

batgrbproduct Analysis for Trigger=889748

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Feb 20 20:02:31 EST 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger889748/GCN5_download_cron
======================================================================

  Trigger: 00889748      Segment: 000

  BAT Trigger Time: 572297960.448   [s; MET]
      Trigger Stop: 572297964.544   [s; MET]
               UTC: 2019-02-19T19:38:58.002900    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 189.757083789005   Dec: 76.6139916242753  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.13
     Image Trigger?:     NO
     Rate S/N Ratio:     8.54400374531753  [ if not an image trigger ]
     Image S/N Ratio:    10.13

  Flight Position:   [ source = BAT ]
    RA: 189.757083789005   Dec: 76.6139916242753  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 189.686246234948   Dec: 76.6060136840161  [deg; J2000]  
        { 12h 38m 44.7s , +76d 36' 21.6" }
         +/- 1.62731994591771 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.714505975754242 [arcmin] (formal 1-sigma fit error)
    SNR: 15.1709986307957
 
  Angular difference between Flight and Ground position is 1.094490 arcmin
 
  Partial Coding Fraction: 0.765625    [ including projection effects ]

  Duration
     T90: 167.84399998188 +/- 12.8003112495262
        Measured from: -89.327999830246
                   to: 78.5160001516342     [s; relative to TRIGTIME]
     T50: 62.4999998807907 +/- 2.45610753560811
        Measured from: 3.70800018310547
                   to: 66.2080000638962     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 65.5240000486374     
                   to: 66.5240000486374     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -106.203999996185     
                   to: 88.6840000152588     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.140053   2.921996   1.268415   0.286897
           0.108811   0.112187   0.095754   0.083996 [error]
 Peak      0.092986   0.087792   0.030096   0.007256
           0.008210   0.008304   0.006693   0.005298 [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 1.06e-06 1.24e-06 1.06e-06 1.52e-06 3.90e-06 4.88e-06   erg/cm2
              Error 8.00e-08 6.05e-08 9.47e-08 2.75e-07 2.11e-07 3.72e-07   erg/cm2
Peak flux Power-law 9.49e-01 6.36e-01 2.78e-01 1.68e-01 1.95e+00 2.03e+00   ph/cm2/s
              Error 1.37e-01 6.99e-02 5.41e-02 6.00e-02 2.10e-01 2.20e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.01e-06 1.29e-06 1.03e-06 7.86e-07 3.75e-06 4.12e-06   erg/cm2
              Error 9.31e-08 7.65e-08 1.04e-07 -------- 2.58e-07 6.32e-07   erg/cm2
Peak flux Cutoff-PL 9.20e-01 6.81e-01 2.68e-01 7.32e-02 1.92e+00 1.94e+00   ph/cm2/s
              Error 1.48e-01 1.01e-01 6.63e-02 1.12e-01 2.14e-01 2.42e-01   ph/cm2/s
 
Fluence        Band 1.00e-06 1.29e-06 1.03e-06 7.88e-07 3.74e-06 4.12e-06   erg/cm2
              Error 9.17e-08 -------- -------- -------- -------- --------   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    2.236    0.104    -      -           2.12e-03 1.34e-04   48.970 57
CPL   1.850    0.295      16.4   15.6      3.49e-03 0.00e+00   46.190 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.193    0.205    -      -           1.18e-02 1.75e-03   57.630 57
CPL   1.649    0.714      24.8   19.4      2.54e-02 0.00e+00   56.530 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: 170.816000 sec.
T50 in the 50-300 keV band: 107.968000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  194.888 -106.204   88.684
T90   167.844  -89.328   78.516
T50    62.500    3.708   66.208
Peak    1.000   65.524   66.524

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  189.6862 +76.6060 0.0127   26.9 -142.9       3.9697    15.2  TRIG_00889748       
------------------------------------------
 
Foreground time interval of the image:
-106.204  35.253 (delta_t = 141.457 [sec])
Background time interval of the image:
-239.448 -106.204 (delta_t = 133.244 [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 -106.204 sec. to   88.684 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.23648     ( -0.102187   0.105006 )
Norm@50keV  : 2.11684E-03    ( -0.000134567   0.000132989 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.97 using 59 PHA bins.
# Reduced chi-squared =         0.8592 for     57 degrees of freedom 
# Null hypothesis probability =   7.663960e-01
 
Photon flux (15-150 keV)    in 194.9 sec: 0.357309 ( -0.0181045  0.0181531 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.90014e-06 ( -2.10599e-07  2.12379e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from -106.204 sec. to   88.684 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.84951     ( -0.438347   0.151809 )
Epeak [keV] : 16.4330      ( -15.434 15.8643 )
Norm@50keV  : 3.49393E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.19 using 59 PHA bins.
# Reduced chi-squared =         0.8247 for     56 degrees of freedom 
# Null hypothesis probability =   8.222230e-01
 
Photon flux (15-150 keV)    in 194.9 sec: 0.348588 ( -0.020012  0.020053 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.74705e-06 ( -2.55709e-07  2.60737e-07 ) ergs/cm2
 
Band function
Time interval is from -106.204 sec. to   88.684 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.84940   ( -0.195322   0.165654 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 16.4396      ( -8.62501 15.8683 )
Norm@50keV   : 3.49335E-03    ( -0.000798186   0.00263292 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.19 using 59 PHA bins.
# Reduced chi-squared =         0.8397 for     55 degrees of freedom 
# Null hypothesis probability =   7.954708e-01
 
Photon flux (15-150 keV)    in 194.9 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.74148e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.35884  (  )
R^2/D10^2   : 0.195273  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         132.14 using 59 PHA bins.
# Reduced chi-squared =         2.3183 for     57 degrees of freedom 
# Null hypothesis probability =   6.660672e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.614e-07   5.944e-08
25- 50  1.493e-06   8.030e-08
50-150  6.410e-07   9.384e-08
15-150  2.795e-06   1.549e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 49.7374       (-6.55385      8.38516)
Norm        : 1.96530       (-0.177558     0.21453)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.00 using 59 PHA bins.
# Reduced chi-squared =         0.8771 for     57 degrees of freedom 
# Null hypothesis probability =   7.329964e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.354e-07   6.500e-08
25- 50  1.341e-06   6.870e-08
50-150  1.295e-06   1.842e-07
15-150  3.572e-06   2.144e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.08368        (-0.755283      0.816722)
R1^2/D10^2  : 1.65912        (-0.738124      1.61646)
kT2 [keV]   : 16.7265        (-2.37924      3.28931)
R2^2/D10^2  : 1.40589E-02    (-0.00749581   0.0133008)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.57 using 59 PHA bins.
# Reduced chi-squared =         0.8468 for     55 degrees of freedom 
# Null hypothesis probability =   7.835143e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.968e-07   1.897e-07
25- 50  1.256e-06   1.720e-07
50-150  1.386e-06   3.313e-07
15-150  3.639e-06   5.789e-07

Peak spectrum fit

Power-law model
Time interval is from   65.524 sec. to   66.524 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.19295     ( -0.197886   0.212058 )
Norm@50keV  : 1.17967E-02    ( -0.00176864   0.0017274 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.63 using 59 PHA bins.
# Reduced chi-squared =          1.011 for     57 degrees of freedom 
# Null hypothesis probability =   4.517488e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.94578 ( -0.20991  0.209924 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.10805e-07 ( -1.43118e-08  1.45904e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   65.524 sec. to   66.524 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64947     ( -1.12451   0.302823 )
Epeak [keV] : 24.7870      ( -22.3377 16.4287 )
Norm@50keV  : 2.54344E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.53 using 59 PHA bins.
# Reduced chi-squared =          1.009 for     56 degrees of freedom 
# Null hypothesis probability =   4.551145e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.92051 ( -0.214  0.21368 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.0485e-07 ( -1.64614e-08  1.7381e-08 ) ergs/cm2
 
Band function
Time interval is from   65.524 sec. to   66.524 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.92280   ( -14.6841   -4.9228 )
beta        : -2.35452    ( -0.356618   0.246847 )
Epeak [keV] : 21.0608      ( -4.31207 3.64074 )
Norm@50keV   : 6331.30    ( -678.167   91411.4 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.77 using 59 PHA bins.
# Reduced chi-squared =         0.9958 for     55 degrees of freedom 
# Null hypothesis probability =   4.833782e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.06892e-07 ( -1.06885e-07  -1.47996e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.30547  (-1.01448  1.15348)
R^2/D10^2   : 1.86023  (-0.753397   1.27601)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.16 using 59 PHA bins.
# Reduced chi-squared =          1.248 for     57 degrees of freedom 
# Null hypothesis probability =   9.837245e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.382e-08   4.245e-09
25- 50  4.446e-08   6.650e-09
50-150  1.319e-08   4.174e-09
15-150  8.147e-08   1.274e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 46.8315       (-11.7809      18.1183)
Norm        : 11.5171       (-2.0709     2.71145)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.75 using 59 PHA bins.
# Reduced chi-squared =         0.9957 for     57 degrees of freedom 
# Null hypothesis probability =   4.843402e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.771e-08   3.920e-09
25- 50  3.886e-08   5.015e-09
50-150  3.542e-08   1.081e-08
15-150  1.020e-07   1.484e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.82365        (-1.93755      2.0598)
R1^2/D10^2  : 5.97716        (-3.76159      18.7333)
kT2 [keV]   : 19.2783        (-8.02935      179.356)
R2^2/D10^2  : 3.80381E-02    (-0.0354154   0.34749)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.41 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     55 degrees of freedom 
# Null hypothesis probability =   4.221168e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.854e-08   1.165e-08
25- 50  3.750e-08   1.604e-08
50-150  3.873e-08   2.298e-08
15-150  1.048e-07   4.175e-08
Plot creation:
Wed Feb 20 20:06:12 EST 2019