batgrbproduct analysis for trigger=745022

batgrbproduct Analysis for Trigger=745022

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Apr  2 17:46:01 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger745022/GCN5_download_cron
======================================================================

  Trigger: 00745022      Segment: 000

  BAT Trigger Time: 512766072   [s; MET]
      Trigger Stop: 512766136   [s; MET]
               UTC: 2017-04-01T19:00:53.156040    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 271.602469375402   Dec: -22.2418741578669  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    9.44
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    9.44

  Flight Position:   [ source = BAT ]
    RA: 271.602469375402   Dec: -22.2418741578669  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 271.617245683416   Dec: -22.2422925937962  [deg; J2000]  
        { 18h 06m 28.1s , -22d 14' 32.3" }
         +/- 2.02895137377434 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.08333288974892 [arcmin] (formal 1-sigma fit error)
    SNR: 11.0702874027942
 
  Angular difference between Flight and Ground position is 0.820995 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 112 +/- 57.6888204074238
        Measured from: -78.9999998807907
                   to: 33.0000001192093     [s; relative to TRIGTIME]
     T50: 48 +/- 22.6274169979695
        Measured from: -30.9999998807907
                   to: 17.0000001192093     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.5     
                   to: 9.5     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -79     
                   to: 65     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.421807   0.300248  -0.000138   0.076945
           0.092034   0.082959   0.068969   0.059194 [error]
 Peak      0.025774   0.016128   0.001434  -0.001815
           0.007607   0.006765   0.005852   0.005066 [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 4.18e-07 9.03e-08 9.82e-09 1.18e-09 5.19e-07 5.19e-07   erg/cm2
              Error 6.09e-08 3.70e-08 9.65e-09 2.36e-09 8.23e-08 8.26e-08   erg/cm2
Peak flux Power-law 2.50e-01 8.96e-02 1.84e-02 4.46e-03 3.61e-01 3.62e-01   ph/cm2/s
              Error 1.09e-01 6.10e-02 2.77e-02 1.55e-02 1.56e-01 1.58e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.18e-07 8.97e-08 9.67e-09 1.15e-09 5.18e-07 5.19e-07   erg/cm2
              Error 6.07e-08 4.42e-08 1.14e-08 2.34e-09 7.84e-08 9.06e-08   erg/cm2
Peak flux Cutoff-PL 2.51e-01 9.32e-02 1.42e-02 1.02e-03 3.59e-01 3.59e-01   ph/cm2/s
              Error 1.12e-01 8.45e-02 2.73e-02 1.51e-02 1.54e-01 1.57e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   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    5.200    0.754    -      -           6.12e-05 4.71e-05   47.550 57
CPL   1.000    0.000      50.0    0.0      1.23e-03 0.00e+00  133.920 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.287    1.452    -      -           1.06e-03 1.23e-03   65.240 57
CPL   1.887    0.000       2.2    0.0      1.10e-02 0.00e+00   65.210 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  144.000  -79.000   65.000
T90   112.000  -79.000   33.000
T50    48.000  -31.000   17.000
Peak    1.000    8.500    9.500

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  271.6172 -22.2423 0.0173   12.0  -38.8       2.1799    11.1  TRIG_00745022       
------------------------------------------
 
Foreground time interval of the image:
-79.000  65.000 (delta_t = 144.000 [sec])
Background time interval of the image:
-239.000 -79.000 (delta_t = 160.000 [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  -79.000 sec. to   65.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 5.20015     ( -0.709645   0.797877 )
Norm@50keV  : 6.11578E-05    ( -3.45199e-05   5.96222e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.55 using 59 PHA bins.
# Reduced chi-squared =         0.8342 for     57 degrees of freedom 
# Null hypothesis probability =   8.095236e-01
 
Photon flux (15-150 keV)    in 144 sec: 0.114367 ( -0.0164695  0.0164733 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.19116e-07 ( -8.12248e-08  8.33312e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -79.000 sec. to   65.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 1.22556E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         133.92 using 59 PHA bins.
# Reduced chi-squared =         2.3915 for     56 degrees of freedom 
# Null hypothesis probability =   2.491620e-08
 
Photon flux (15-150 keV)    in 144 sec: 0.114257 ( -0.0164751  0.016402 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.18436e-07 ( -8.2967e-08  7.37568e-08 ) ergs/cm2
 
Band function
Time interval is from  -79.000 sec. to   65.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -8.47945   ( 8.47945   8.47945 )
beta        : -5.22129    ( -0.780291   0.727689 )
Epeak [keV] : 2.99021      ( -2.99021 -2.99021 )
Norm@50keV   : 8.13431E-03    ( -0.00456557   0.00823288 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.55 using 59 PHA bins.
# Reduced chi-squared =         0.8646 for     55 degrees of freedom 
# Null hypothesis probability =   7.520010e-01
 
Photon flux (15-150 keV)    in 144 sec: 0.114254 ( 6.88575  -0.016443 ) 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]    : 2.68373  (-0.399299  0.506716)
R^2/D10^2   : 33.3928  (-23.0719   76.4919)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.31 using 59 PHA bins.
# Reduced chi-squared =         0.9003 for     57 degrees of freedom 
# Null hypothesis probability =   6.873273e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.348e-07   2.076e-07
25- 50  4.222e-08   2.382e-08
50-150  2.607e-11   2.810e-11
15-150  4.771e-07   2.421e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 5.29842       (-1.18932      1.74735)
Norm        : 21.1755       (-12.588     34.7939)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.21 using 59 PHA bins.
# Reduced chi-squared =         0.8634 for     57 degrees of freedom 
# Null hypothesis probability =   7.586814e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.291e-07   1.596e-07
25- 50  6.166e-08   3.233e-08
50-150  4.248e-10   4.183e-10
15-150  4.912e-07   1.708e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.19716E-04        (0.000181496      -0.000119716)
R1^2/D10^2  : 1124.84        (-1124.85      -1124.85)
kT2 [keV]   : 2.68349        (-0.399199      0.506815)
R2^2/D10^2  : 33.4132    (-23.0705   76.4902)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.19 using 59 PHA bins.
#Fit statistic : Chi-Squared =          51.31 using 59 PHA bins.
# Reduced chi-squared =          1.113 for     55 degrees of freedom 
# Reduced chi-squared =         0.9330 for     55 degrees of freedom 
# Null hypothesis probability =   2.635284e-01
# Null hypothesis probability =   6.162304e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.633e-07   4.689e-02
25- 50  1.123e-07   3.878e-01
50-150  9.819e-10   9.338e+00
15-150  4.766e-07   1.026e+01

Peak spectrum fit

Power-law model
Time interval is from    8.500 sec. to    9.500 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.28717     ( -1.06727   1.83746 )
Norm@50keV  : 1.05653E-03    ( -0.00105653   0.00140884 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.24 using 59 PHA bins.
# Reduced chi-squared =          1.145 for     57 degrees of freedom 
# Null hypothesis probability =   2.121256e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.360758 ( -0.154796  0.156379 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.46845e-08 ( -7.6215e-09  9.70212e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    8.500 sec. to    9.500 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.88749     (     )
Epeak [keV] : 2.22132      (   )
Norm@50keV  : 1.10019E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.21 using 59 PHA bins.
# Reduced chi-squared =          1.164 for     56 degrees of freedom 
# Null hypothesis probability =   1.870720e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.358890 ( -0.152021  0.155822 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.39482e-08 ( -7.00879e-09  1.01582e-08 ) ergs/cm2
 
Band function
Time interval is from    8.500 sec. to    9.500 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -9.12296   ( 9.12296   9.12296 )
beta        : -3.28716    ( -1.83924   1.06727 )
Epeak [keV] : 9.17808      ( -9.17808 -9.17808 )
Norm@50keV   : 0.143598    ( -0.143598   0.19148 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.24 using 59 PHA bins.
# Reduced chi-squared =          1.186 for     55 degrees of freedom 
# Null hypothesis probability =   1.625183e-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]    : 4.83311  (-2.37585  3.30651)
R^2/D10^2   : 3.56880  (-3.63488   141.644)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.16 using 59 PHA bins.
# Reduced chi-squared =          1.161 for     57 degrees of freedom 
# Null hypothesis probability =   1.901728e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.562e-09   4.611e-09
25- 50  4.538e-09   3.090e-09
50-150  1.561e-10   1.622e-10
15-150  1.226e-08   7.655e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 14.5450       (-9.18817      27.8882)
Norm        : 6.77182       (-6.77055     42.8748)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.28 using 59 PHA bins.
# Reduced chi-squared =          1.145 for     57 degrees of freedom 
# Null hypothesis probability =   2.111004e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.584e-09   4.913e-09
25- 50  5.015e-09   3.359e-09
50-150  8.296e-10   8.165e-10
15-150  1.343e-08   8.715e-09
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.34919        (-2.59131      8.50088)
R1^2/D10^2  : 114.350        (-65.8875      -65.8875)
kT2 [keV]   : 7.46362        (-7.73451      -7.73451)
R2^2/D10^2  : 0.342158    (-0.362186   38.9828)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.81 using 59 PHA bins.
#Fit statistic : Chi-Squared =          64.77 using 59 PHA bins.
# Reduced chi-squared =          1.178 for     55 degrees of freedom 
# Reduced chi-squared =          1.178 for     55 degrees of freedom 
# Null hypothesis probability =   1.716000e-01
# Null hypothesis probability =   1.726136e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.403e-09   3.629e-09
25- 50  5.317e-09   2.995e-09
50-150  1.202e-09   1.148e-09
15-150  1.392e-08   8.660e-09
Plot creation:
Sun Apr  2 18:12:37 EDT 2017