batgrbproduct analysis for trigger=882809

batgrbproduct Analysis for Trigger=882809

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jan 10 08:18:26 EST 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger882809/GCN5_download_cron
======================================================================

  Trigger: 00882809      Segment: 000

  BAT Trigger Time: 568727791.424   [s; MET]
      Trigger Stop: 568727792.448   [s; MET]
               UTC: 2019-01-09T11:56:09.203160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 55.5953879141201   Dec: 63.5778852049672  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.64
     Image Trigger?:     NO
     Rate S/N Ratio:     15.0332963783729  [ if not an image trigger ]
     Image S/N Ratio:    8.64

  Flight Position:   [ source = BAT ]
    RA: 55.5953879141201   Dec: 63.5778852049672  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 55.5538299704521   Dec: 63.5954927767967  [deg; J2000]  
        { 03h 42m 12.9s , +63d 35' 43.8" }
         +/- 1.42490842630932 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.566807976403862 [arcmin] (formal 1-sigma fit error)
    SNR: 18.3409881553093
 
  Angular difference between Flight and Ground position is 1.531807 arcmin
 
  Partial Coding Fraction: 0.609375    [ including projection effects ]

  Duration
     T90: 5.92399990558624 +/- 0.771183443567822
        Measured from: -2.97199988365173
                   to: 2.95200002193451     [s; relative to TRIGTIME]
     T50: 2.80799996852875 +/- 0.855074239512648
        Measured from: -1.18799996376038
                   to: 1.62000000476837     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.124000072479248     
                   to: 0.875999927520752     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.23600006103516     
                   to: 3.30799996852875     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.226677   0.281054   0.213391   0.055080
           0.023871   0.024232   0.020524   0.016773 [error]
 Peak      0.057517   0.068353   0.060413   0.010621
           0.009365   0.009621   0.008211   0.006130 [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 7.06e-08 1.23e-07 1.64e-07 4.44e-07 4.77e-07 8.01e-07   erg/cm2
              Error 1.06e-08 1.15e-08 2.03e-08 1.16e-07 4.87e-08 1.33e-07   erg/cm2
Peak flux Power-law 5.63e-01 5.58e-01 3.88e-01 4.25e-01 1.68e+00 1.93e+00   ph/cm2/s
              Error 1.28e-01 8.02e-02 6.70e-02 1.48e-01 2.32e-01 2.65e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.64e-08 1.29e-07 1.67e-07 2.32e-07 4.61e-07 5.95e-07   erg/cm2
              Error 1.23e-08 1.47e-08 2.19e-08 2.16e-07 5.45e-08 2.09e-07   erg/cm2
Peak flux Cutoff-PL 5.30e-01 5.80e-01 4.00e-01 2.80e-01 1.66e+00 1.79e+00   ph/cm2/s
              Error 1.46e-01 9.56e-02 7.48e-02 -------- 2.36e-01 3.38e-01   ph/cm2/s
 
Fluence        Band 6.46e-08 1.31e-07 1.63e-07 3.22e-07 4.61e-07 6.80e-07   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    1.589    0.158    -      -           6.75e-03 6.39e-04   66.490 57
CPL   1.163    0.614      94.7  -30.4      1.13e-02 1.01e-02   65.150 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.526    0.229    -      -           1.33e-02 1.86e-03   64.170 57
CPL   1.160    0.703     114.0  -30.0      2.06e-02 2.53e-02   63.580 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: 7.232000 sec.
T50 in the 50-300 keV band: 3.328000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    7.544   -4.236    3.308
T90     5.924   -2.972    2.952
T50     2.808   -1.188    1.620
Peak    1.000   -0.124    0.876

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   55.5538 +63.5955 0.0105   28.8   31.3       0.8005    18.3  TRIG_00882809       
------------------------------------------
 
Foreground time interval of the image:
 -4.236   3.308 (delta_t =   7.544 [sec])
Background time interval of the image:
-239.424  -4.236 (delta_t = 235.188 [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   -4.236 sec. to    3.308 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.58883     ( -0.157101   0.158962 )
Norm@50keV  : 6.74840E-03    ( -0.000640873   0.000636392 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.49 using 59 PHA bins.
# Reduced chi-squared =          1.166 for     57 degrees of freedom 
# Null hypothesis probability =   1.826918e-01
 
Photon flux (15-150 keV)    in 7.544 sec: 0.864226 ( -0.0800193  0.0801301 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.76776e-07 ( -4.84965e-08  4.89333e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -4.236 sec. to    3.308 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16306     ( -0.726192   0.502527 )
Epeak [keV] : 94.7489      ( -33.9878 -94.7516 )
Norm@50keV  : 1.12602E-02    ( -0.00495213   0.0152686 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.15 using 59 PHA bins.
# Reduced chi-squared =          1.163 for     56 degrees of freedom 
# Null hypothesis probability =   1.883907e-01
 
Photon flux (15-150 keV)    in 7.544 sec: 0.848814 ( -0.083583  0.083155 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.60689e-07 ( -5.45454e-08  5.44745e-08 ) ergs/cm2
 
Band function
Time interval is from   -4.236 sec. to    3.308 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.997024   ( 0.985843   0.985843 )
beta        : -1.90010    ( 1.90255   0.410041 )
Epeak [keV] : 75.8061      ( -74.4678 -74.4678 )
Norm@50keV   : 1.41523E-02    ( -0.00824353   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.74 using 59 PHA bins.
# Reduced chi-squared =          1.177 for     55 degrees of freedom 
# Null hypothesis probability =   1.732775e-01
 
Photon flux (15-150 keV)    in 7.544 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.60545e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.7686  (-1.47086  1.68986)
R^2/D10^2   : 0.130492  (-0.0446533   0.0660097)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          88.23 using 59 PHA bins.
# Reduced chi-squared =          1.548 for     57 degrees of freedom 
# Null hypothesis probability =   5.008309e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.948e-08   6.676e-09
25- 50  1.444e-07   1.705e-08
50-150  1.787e-07   3.448e-08
15-150  3.625e-07   4.440e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 175.518       (-62.751      -175.239)
Norm        : 3.54054       (-0.342732     0.394607)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.19 using 59 PHA bins.
# Reduced chi-squared =          1.144 for     57 degrees of freedom 
# Null hypothesis probability =   2.134246e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.755e-08   1.917e-08
25- 50  1.279e-07   5.273e-08
50-150  2.684e-07   1.469e-07
15-150  4.639e-07   2.463e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.40579        (-2.2479      3.88668)
R1^2/D10^2  : 1.17156        (-0.821671      2.4487)
kT2 [keV]   : 22.0249        (-5.44958      32.4548)
R2^2/D10^2  : 1.90883E-02    (-0.0177365   0.0387543)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.91 using 59 PHA bins.
# Reduced chi-squared =          1.216 for     55 degrees of freedom 
# Null hypothesis probability =   1.303234e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.555e-08   3.250e-08
25- 50  1.287e-07   4.869e-08
50-150  2.550e-07   1.373e-07
15-150  4.492e-07   1.912e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.124 sec. to    0.876 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.52573     ( -0.227259   0.230417 )
Norm@50keV  : 1.33483E-02    ( -0.00186754   0.00185318 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.17 using 59 PHA bins.
# Reduced chi-squared =          1.126 for     57 degrees of freedom 
# Null hypothesis probability =   2.398500e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.67819 ( -0.231485  0.231837 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.26114e-07 ( -1.90007e-08  1.92015e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.124 sec. to    0.876 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16007     ( -0.955178   0.45149 )
Epeak [keV] : 113.963      ( -54.013 -113.963 )
Norm@50keV  : 2.05928E-02    ( -0.00886871   0.0417281 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.58 using 59 PHA bins.
# Reduced chi-squared =          1.135 for     56 degrees of freedom 
# Null hypothesis probability =   2.271109e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.65801 ( -0.23603  0.23598 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.23187e-07 ( -2.0425e-08  2.0334e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.124 sec. to    0.876 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.16421   ( 1.16421   0.724914 )
beta        : -8.75361    ( 8.7526   18.7526 )
Epeak [keV] : 115.390      ( -49.6423 -115.39 )
Norm@50keV   : 2.04450E-02    ( -0.00275428   0.01911 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.58 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     55 degrees of freedom 
# Null hypothesis probability =   1.999917e-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]    : 14.4303  (-2.52937  3.21584)
R^2/D10^2   : 0.217233  (-0.215447   0.213045)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.60 using 59 PHA bins.
# Reduced chi-squared =          1.361 for     57 degrees of freedom 
# Null hypothesis probability =   3.614376e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.524e-09   2.679e-09
25- 50  3.649e-08   7.605e-09
50-150  5.079e-08   1.432e-08
15-150  9.680e-08   1.920e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.336       (-88.9125      -199.352)
Norm        : 6.88456       (-0.927272     0.928677)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.63 using 59 PHA bins.
# Reduced chi-squared =          1.116 for     57 degrees of freedom 
# Null hypothesis probability =   2.544164e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.714e-08   9.725e-09
25- 50  3.298e-08   1.847e-08
50-150  7.232e-08   4.042e-08
15-150  1.224e-07   6.815e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.01544        (-2.19924      2.99631)
R1^2/D10^2  : 1.83062        (-1.2537      5.13548)
kT2 [keV]   : 27.0298        (-8.07189      24.937)
R2^2/D10^2  : 1.87238E-02    (-0.0164091   0.0298948)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.26 using 59 PHA bins.
# Reduced chi-squared =          1.132 for     55 degrees of freedom 
# Null hypothesis probability =   2.336927e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.678e-08   9.338e-09
25- 50  3.337e-08   1.758e-08
50-150  7.492e-08   4.090e-08
15-150  1.251e-07   5.850e-08
Plot creation:
Thu Jan 10 08:21:48 EST 2019