batgrbproduct analysis for trigger=903158

batgrbproduct Analysis for Trigger=903158

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun May 12 14:20:18 EDT 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger903158/GCN5_download_cron
======================================================================

  Trigger: 00903158      Segment: 000

  BAT Trigger Time: 579251711.168   [s; MET]
      Trigger Stop: 579251715.264   [s; MET]
               UTC: 2019-05-11T07:14:48.282980    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 126.436247844037   Dec: -20.241918781366  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.72
     Image Trigger?:     NO
     Rate S/N Ratio:     38.7040049607273  [ if not an image trigger ]
     Image S/N Ratio:    9.72

  Flight Position:   [ source = BAT ]
    RA: 126.436247844037   Dec: -20.241918781366  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 126.442698186267   Dec: -20.2515494407279  [deg; J2000]  
        { 08h 25m 46.2s , -20d 15' 05.6" }
         +/- 1.54691893688771 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.572800255593443 [arcmin] (formal 1-sigma fit error)
    SNR: 16.3098678749205
 
  Angular difference between Flight and Ground position is 0.682455 arcmin
 
  Partial Coding Fraction: 0.09082031    [ including projection effects ]

  Duration
     T90: 27.6640000343323 +/- 2.35417588983274
        Measured from: -21.7919998168945
                   to: 5.87200021743774     [s; relative to TRIGTIME]
     T50: 15.7760000228882 +/- 1.76443078401425
        Measured from: -14.2399998903275
                   to: 1.53600013256073     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.356000065803528     
                   to: 1.35600006580353     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -24.2719999551773     
                   to: 6.87999999523163     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.475662   3.313798   3.521651   1.609067
           0.182709   0.210977   0.202131   0.163414 [error]
 Peak      0.065966   0.274117   0.373941   0.093438
           0.035258   0.047787   0.050260   0.037137 [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 6.98e-07 1.55e-06 2.72e-06 1.11e-05 7.43e-06 1.61e-05   erg/cm2
              Error 9.15e-08 1.26e-07 1.83e-07 1.63e-06 4.82e-07 1.71e-06   erg/cm2
Peak flux Power-law 1.68e+00 1.98e+00 1.69e+00 2.45e+00 6.23e+00 7.80e+00   ph/cm2/s
              Error 5.58e-01 4.45e-01 3.34e-01 8.76e-01 1.25e+00 1.48e+00   ph/cm2/s
 
Fluence   Cutoff-PL 5.95e-07 1.61e-06 2.95e-06 5.82e-06 7.36e-06 1.10e-05   erg/cm2
              Error 1.13e-07 1.40e-07 2.45e-07 2.67e-06 4.92e-07 2.62e-06   erg/cm2
Peak flux Cutoff-PL 8.10e-01 2.23e+00 2.40e+00 6.95e-01 6.02e+00 6.14e+00   ph/cm2/s
              Error 5.66e-01 5.88e-01 5.16e-01 -------- 1.23e+00 1.31e+00   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 8.29e-01 2.28e+00 2.46e+00 7.15e-01 6.16e+00 6.28e+00   ph/cm2/s
              Error -------- 5.74e-01 5.03e-01 -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.191    0.105    -      -           2.34e-02 1.55e-03   63.080 57
CPL   0.578    0.467     138.3  111.2      4.33e-02 2.06e-02   57.300 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.231    0.261    -      -           5.28e-02 1.01e-02   66.700 57
CPL  -1.414    1.781      77.0   19.1      7.27e-01 2.45e+00   55.050 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: 28.416000 sec.
T50 in the 50-300 keV band: 15.872000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   31.152  -24.272    6.880
T90    27.664  -21.792    5.872
T50    15.776  -14.240    1.536
Peak    1.000    0.356    1.356

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  126.4427 -20.2515 0.0118   56.3   -4.3      10.8182    16.3  TRIG_00903158       
------------------------------------------
 
Foreground time interval of the image:
-24.272   6.880 (delta_t =  31.152 [sec])
Background time interval of the image:
-87.267 -24.272 (delta_t =  62.995 [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  -24.272 sec. to    6.880 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.19090     ( -0.105923   0.103894 )
Norm@50keV  : 2.34345E-02    ( -0.00154824   0.00154209 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.08 using 59 PHA bins.
# Reduced chi-squared =          1.107 for     57 degrees of freedom 
# Null hypothesis probability =   2.701484e-01
 
Photon flux (15-150 keV)    in 31.15 sec: 2.74727 ( -0.19471  0.195508 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.42516e-06 ( -4.81436e-07  4.81669e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -24.272 sec. to    6.880 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.578001     ( -0.491417   0.441955 )
Epeak [keV] : 138.259      ( -36.5601 185.878 )
Norm@50keV  : 4.32780E-02    ( -0.0151745   0.0259617 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.30 using 59 PHA bins.
# Reduced chi-squared =          1.023 for     56 degrees of freedom 
# Null hypothesis probability =   4.268418e-01
 
Photon flux (15-150 keV)    in 31.15 sec: 2.69041 ( -0.19764  0.19881 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.35803e-06 ( -4.93011e-07  4.91142e-07 ) ergs/cm2
 
Band function
Time interval is from  -24.272 sec. to    6.880 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.97521   ( -14.6267   -4.97521 )
beta        : -1.33230    ( -0.129086   0.126796 )
Epeak [keV] : 32.7044      ( -5.51397 4.95393 )
Norm@50keV   : 377.652    ( -23.8408   790.461 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.73 using 59 PHA bins.
# Reduced chi-squared =         0.9587 for     55 degrees of freedom 
# Null hypothesis probability =   5.619650e-01
 
Photon flux (15-150 keV)    in 31.15 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]    : 20.8907  (-1.54526  1.72712)
R^2/D10^2   : 0.114005  (-0.0272166   0.0344562)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          90.03 using 59 PHA bins.
# Reduced chi-squared =          1.579 for     57 degrees of freedom 
# Null hypothesis probability =   3.456537e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.935e-07   4.000e-08
25- 50  1.504e-06   1.509e-07
50-150  4.888e-06   4.486e-07
15-150  6.685e-06   5.062e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-9.89283      -200)
Norm        : 11.9854       (-0.782916     0.782916)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          97.13 using 59 PHA bins.
# Reduced chi-squared =          1.704 for     57 degrees of freedom 
# Null hypothesis probability =   7.320899e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.301e-07   6.682e-08
25- 50  1.789e-06   1.408e-07
50-150  3.924e-06   7.772e-07
15-150  6.643e-06   8.769e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 11.0014        (-2.913      3.391)
R1^2/D10^2  : 0.572229        (-0.279029      0.755206)
kT2 [keV]   : 38.9521        (-10.6759      56.8182)
R2^2/D10^2  : 1.09211E-02    (-0.00950302   0.0231683)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.83 using 59 PHA bins.
# Reduced chi-squared =         0.9969 for     55 degrees of freedom 
# Null hypothesis probability =   4.811833e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.186e-07   1.607e-07
25- 50  1.734e-06   4.967e-07
50-150  5.119e-06   2.097e-06
15-150  7.372e-06   2.609e-06

Peak spectrum fit

Power-law model
Time interval is from    0.356 sec. to    1.356 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23107     ( -0.263657   0.259203 )
Norm@50keV  : 5.28072E-02    ( -0.0101098   0.010082 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.70 using 59 PHA bins.
# Reduced chi-squared =          1.170 for     57 degrees of freedom 
# Null hypothesis probability =   1.778568e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.22601 ( -1.24597  1.25588 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.31222e-07 ( -1.02479e-07  1.02661e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.356 sec. to    1.356 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.41417     ( -2.10275   1.45879 )
Epeak [keV] : 76.9629      ( -13.1159 25.0914 )
Norm@50keV  : 0.726906    ( -0.726905   4.18154 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.05 using 59 PHA bins.
# Reduced chi-squared =         0.9830 for     56 degrees of freedom 
# Null hypothesis probability =   5.108573e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.01696 ( -1.2128  1.24083 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.37743e-07 ( -1.06984e-07  1.06998e-07 ) ergs/cm2
 
Band function
Time interval is from    0.356 sec. to    1.356 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.41516   ( -1.17087   2.44817 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 76.9439      ( -11.9652 25.1077 )
Norm@50keV   : 0.727829    ( -0.727829   4.18726 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.05 using 59 PHA bins.
# Reduced chi-squared =          1.001 for     55 degrees of freedom 
# Null hypothesis probability =   4.727708e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.15780 (    ) 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]    : 19.7251  (-3.03505  3.65761)
R^2/D10^2   : 0.353507  (-0.159809   0.271156)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.09 using 59 PHA bins.
# Reduced chi-squared =         0.9665 for     57 degrees of freedom 
# Null hypothesis probability =   5.471577e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.666e-08   8.075e-09
25- 50  1.316e-07   3.839e-08
50-150  3.787e-07   1.085e-07
15-150  5.370e-07   1.385e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-55.1442      -200)
Norm        : 26.9592       (-5.16832     5.16832)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.84 using 59 PHA bins.
# Reduced chi-squared =          1.208 for     57 degrees of freedom 
# Null hypothesis probability =   1.353641e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.717e-08   3.976e-08
25- 50  1.292e-07   7.450e-08
50-150  2.834e-07   1.689e-07
15-150  4.798e-07   2.792e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 12.3031        (-17.271      -17.271)
R1^2/D10^2  : 9.04067E-02        (-0.0979905      -0.0979905)
kT2 [keV]   : 20.1729        (-20.2006      -20.2006)
R2^2/D10^2  : 0.313186    (-0.308704   0.314869)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.09 using 59 PHA bins.
#Fit statistic : Chi-Squared =          55.07 using 59 PHA bins.
# Reduced chi-squared =          1.002 for     55 degrees of freedom 
# Reduced chi-squared =          1.001 for     55 degrees of freedom 
# Null hypothesis probability =   4.713171e-01
# Null hypothesis probability =   4.718799e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.730e-08   1.232e-05
25- 50  1.324e-07   1.008e-04
50-150  3.787e-07   2.259e-03
15-150  5.384e-07   2.364e-03
Plot creation:
Sun May 12 14:28:49 EDT 2019