batgrbproduct analysis for trigger=888648

batgrbproduct Analysis for Trigger=888648

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Feb 12 13:42:21 EST 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger888648/GCN5_download_cron
======================================================================

  Trigger: 00888648      Segment: 000

  BAT Trigger Time: 571596907.136   [s; MET]
      Trigger Stop: 571596909.184   [s; MET]
               UTC: 2019-02-11T16:54:44.735020    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 196.67538854469   Dec: 41.9660247246067  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.93
     Image Trigger?:     NO
     Rate S/N Ratio:     9.16515138991168  [ if not an image trigger ]
     Image S/N Ratio:    6.93

  Flight Position:   [ source = BAT ]
    RA: 196.67538854469   Dec: 41.9660247246067  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 196.652167673568   Dec: 41.975583285453  [deg; J2000]  
        { 13h 06m 36.5s , +41d 58' 32.1" }
         +/- 2.32078812207693 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.11226792300085 [arcmin] (formal 1-sigma fit error)
    SNR: 9.13654423741904
 
  Angular difference between Flight and Ground position is 1.184031 arcmin
 
  Partial Coding Fraction: 0.265625    [ including projection effects ]

  Duration
     T90: 12.4800000190735 +/- 1.45731809584274
        Measured from: -11.039999961853
                   to: 1.44000005722046     [s; relative to TRIGTIME]
     T50: 8.89600002765656 +/- 2.36264251075707
        Measured from: -8.28799986839294
                   to: 0.608000159263611     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.564000010490417     
                   to: 1.56400001049042     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -11.4880000352859     
                   to: 1.66399991512299     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.277444   0.341032   0.253039   0.117314
           0.052893   0.055064   0.049348   0.043588 [error]
 Peak      0.071227   0.060266   0.085051   0.021549
           0.015693   0.017047   0.015922   0.012929 [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 8.92e-08 1.63e-07 2.28e-07 6.70e-07 6.54e-07 1.15e-06   erg/cm2
              Error 2.78e-08 2.89e-08 5.14e-08 3.48e-07 1.21e-07 3.81e-07   erg/cm2
Peak flux Power-law 4.92e-01 6.02e-01 5.35e-01 8.20e-01 1.91e+00 2.45e+00   ph/cm2/s
              Error 2.46e-01 1.73e-01 1.26e-01 4.72e-01 4.40e-01 5.29e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.06e-08 1.64e-07 2.26e-07 6.46e-07 6.51e-07 1.13e-06   erg/cm2
              Error 2.77e-08 2.72e-08 5.09e-08 3.76e-07 1.16e-07 3.98e-07   erg/cm2
Peak flux Cutoff-PL 4.90e-01 6.02e-01 5.36e-01 8.17e-01 1.91e+00 2.45e+00   ph/cm2/s
              Error 2.01e-01 1.72e-01 1.26e-01 4.00e-01 4.30e-01 5.24e-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    1.512    0.330    -      -           5.25e-03 8.79e-04   63.660 57
CPL   1.512    0.339    10000.0    0.0      5.27e-03 -2.19e-03   63.680 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.171    0.451    -      -           1.64e-02 3.50e-03   54.680 57
CPL   1.172    0.460    10000.0    0.0      1.65e-02 -6.52e-03   54.710 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: 1.280000 sec.
T50 in the 50-300 keV band: 0.640000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   13.152  -11.488    1.664
T90    12.480  -11.040    1.440
T50     8.896   -8.288    0.608
Peak    1.000    0.564    1.564

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  196.6522 +41.9756 0.0211   42.1 -132.3       1.0833     9.1  TRIG_00888648       
------------------------------------------
 
Foreground time interval of the image:
-11.488   1.664 (delta_t =  13.152 [sec])
Background time interval of the image:
-157.835 -11.488 (delta_t = 146.347 [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  -11.488 sec. to    1.664 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51244     ( -0.326329   0.333406 )
Norm@50keV  : 5.25475E-03    ( -0.000885263   0.000873331 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.66 using 59 PHA bins.
# Reduced chi-squared =          1.117 for     57 degrees of freedom 
# Null hypothesis probability =   2.536805e-01
 
Photon flux (15-150 keV)    in 13.15 sec: 0.658226 ( -0.112262  0.112677 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.54277e-07 ( -1.20683e-07  1.21384e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -11.488 sec. to    1.664 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51178     ( -0.367094   0.310085 )
Epeak [keV] : 1.00000E+04      ( -10000 -10000 )
Norm@50keV  : 5.26870E-03    ( -0.000890473   -0.00526872 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.68 using 59 PHA bins.
# Reduced chi-squared =          1.137 for     56 degrees of freedom 
# Null hypothesis probability =   2.245310e-01
 
Photon flux (15-150 keV)    in 13.15 sec: 0.659111 ( -0.109399  0.111376 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.51007e-07 ( -1.15024e-07  1.16634e-07 ) ergs/cm2
 
Band function
Time interval is from  -11.488 sec. to    1.664 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.21406   ( 1.21492   1.21492 )
beta        : -1.51236    ( -2.20296   0.326652 )
Epeak [keV] : 31.8865      ( -31.3498 -31.3498 )
Norm@50keV   : 1.08116E-02    ( -0.00642811   49.0862 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.66 using 59 PHA bins.
# Reduced chi-squared =          1.157 for     55 degrees of freedom 
# Null hypothesis probability =   1.979904e-01
 
Photon flux (15-150 keV)    in 13.15 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]    : 18.8480  (-5.26847  7.53305)
R^2/D10^2   : 3.16162E-02  (-0.0207436   0.0648176)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          85.33 using 59 PHA bins.
# Reduced chi-squared =          1.497 for     57 degrees of freedom 
# Null hypothesis probability =   8.902968e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.911e-08   1.152e-08
25- 50  1.392e-07   4.419e-08
50-150  3.629e-07   1.343e-07
15-150  5.313e-07   1.564e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-86.4228      -199.363)
Norm        : 2.66883       (-0.439518     0.439531)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.86 using 59 PHA bins.
# Reduced chi-squared =          1.155 for     57 degrees of freedom 
# Null hypothesis probability =   1.971741e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.739e-08   5.009e-08
25- 50  1.681e-07   9.573e-08
50-150  3.687e-07   2.044e-07
15-150  6.242e-07   3.600e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.70097        (-1.45289      2.29491)
R1^2/D10^2  : 4.29593        (-3.46011      21.4019)
kT2 [keV]   : 33.8548        (-10.5964      27.909)
R2^2/D10^2  : 4.32983E-03    (-0.0034308   0.00572577)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.81 using 59 PHA bins.
# Reduced chi-squared =          1.088 for     55 degrees of freedom 
# Null hypothesis probability =   3.052213e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.161e-07   6.446e-08
25- 50  1.207e-07   5.635e-08
50-150  4.687e-07   2.679e-07
15-150  7.055e-07   3.148e-07

Peak spectrum fit

Power-law model
Time interval is from    0.564 sec. to    1.564 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.17106     ( -0.460659   0.441378 )
Norm@50keV  : 1.63744E-02    ( -0.00353989   0.00345177 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.68 using 59 PHA bins.
# Reduced chi-squared =         0.9594 for     57 degrees of freedom 
# Null hypothesis probability =   5.624669e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.91447 ( -0.440176  0.439741 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.67524e-07 ( -3.77119e-08  3.75067e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.564 sec. to    1.564 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.17169     ( -0.520221   0.399128 )
Epeak [keV] : 1.00000E+04      ( -10000 -10000 )
Norm@50keV  : 1.64617E-02    ( -0.0034282   -0.0164615 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.71 using 59 PHA bins.
# Reduced chi-squared =         0.9770 for     56 degrees of freedom 
# Null hypothesis probability =   5.237272e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.91285 ( -0.41986  0.44017 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.65753e-07 ( -3.6198e-08  3.6503e-08 ) ergs/cm2
 
Band function
Time interval is from    0.564 sec. to    1.564 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.935756   ( 0.935711   0.935711 )
beta        : -1.17103    ( 1.17071   0.460546 )
Epeak [keV] : 53.5772      ( -53.591 -53.591 )
Norm@50keV   : 2.90733E-02    ( -0.0160845   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.68 using 59 PHA bins.
# Reduced chi-squared =         0.9943 for     55 degrees of freedom 
# Null hypothesis probability =   4.866563e-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]    : 32.4020  (-9.15593  17.0611)
R^2/D10^2   : 1.93562E-02  (-0.0132192   0.0329583)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.83 using 59 PHA bins.
# Reduced chi-squared =          1.137 for     57 degrees of freedom 
# Null hypothesis probability =   2.224112e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.368e-08   1.444e-08
25- 50  3.013e-08   1.833e-08
50-150  4.353e-09   3.525e-09
15-150  5.816e-08   3.532e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-72.5798      -200)
Norm        : 8.04524       (-1.73307     1.73307)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.09 using 59 PHA bins.
# Reduced chi-squared =          1.037 for     57 degrees of freedom 
# Null hypothesis probability =   3.990481e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.005e-08   1.210e-08
25- 50  3.856e-08   2.249e-08
50-150  8.457e-08   4.958e-08
15-150  1.432e-07   8.320e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.62132        (-1.28348      1.70218)
R1^2/D10^2  : 14.0122        (-10.6997      53.729)
kT2 [keV]   : 45.0771        (-14.7503      48.339)
R2^2/D10^2  : 7.16254E-03    (-0.00571237   0.0142877)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.30 using 59 PHA bins.
# Reduced chi-squared =         0.8236 for     55 degrees of freedom 
# Null hypothesis probability =   8.214653e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.632e-08   1.556e-08
25- 50  2.528e-08   1.345e-08
50-150  1.335e-07   7.554e-08
15-150  1.851e-07   9.617e-08
Plot creation:
Tue Feb 12 13:46:04 EST 2019