batgrbproduct analysis for trigger=414905

batgrbproduct Analysis for Trigger=414905

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done using the HEASARC data.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jun 18 20:34:06 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger414905
======================================================================

  Trigger: 00414905      Segment: 000

  BAT Trigger Time: 289472744   [s; MET]
      Trigger Stop: 289472808   [s; MET]
               UTC: 2010-03-05T09:05:38.414420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 168.365441485924   Dec: 42.3762936166821  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.24
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.24

  Flight Position:   [ source = BAT ]
    RA: 168.365441485924   Dec: 42.3762936166821  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 168.373879542398   Dec: 42.3795782774473  [deg; J2000]  
        { 11h 13m 29.7s , +42d 22' 46.5" }
         +/- 1.86225730687667 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.946470654814645 [arcmin] (formal 1-sigma fit error)
    SNR: 12.5125953104799
 
  Angular difference between Flight and Ground position is 0.422748 arcmin
 
  Partial Coding Fraction: 0.2265625    [ including projection effects ]

  Duration
     T90: 75.6159999966621 +/- 10.4010584354437
        Measured from: -0.695999979972839
                   to: 74.9200000166893     [s; relative to TRIGTIME]
     T50: 43.3280000090599 +/- 9.49842935155917
        Measured from: 20.8880000114441
                   to: 64.216000020504     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 62.716000020504     
                   to: 63.716000020504     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -9.17599999904633     
                   to: 78.1840000152588     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.653969   0.760085   0.758454   0.275019
           0.092035   0.097239   0.087550   0.078596 [error]
 Peak      0.035524   0.035760   0.028434   0.026608
           0.010293   0.011067   0.010029   0.008723 [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 1.79e-07 3.60e-07 5.66e-07 1.96e-06 1.58e-06 3.07e-06   erg/cm2
              Error 4.02e-08 4.76e-08 8.55e-08 6.74e-07 2.10e-07 7.28e-07   erg/cm2
Peak flux Power-law 2.80e-01 2.88e-01 2.09e-01 2.43e-01 8.73e-01 1.02e+00   ph/cm2/s
              Error 1.34e-01 9.07e-02 7.80e-02 1.82e-01 2.62e-01 3.12e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.80e-07 3.61e-07 5.65e-07 1.93e-06 1.57e-06 3.03e-06   erg/cm2
              Error 4.09e-08 4.76e-08 6.50e-08 9.13e-07 2.09e-07 7.27e-07   erg/cm2
Peak flux Cutoff-PL 2.32e-01 3.32e-01 2.24e-01 6.59e-02 8.38e-01 8.53e-01   ph/cm2/s
              Error 1.99e-01 1.30e-01 1.02e-01 -------- 2.79e-01 3.61e-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    1.349    0.220    -      -           1.85e-03 2.20e-04   54.030 57
CPL   1.352    0.400    9999.4    0.0      1.85e-03 1.70e-03   54.040 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.464    0.495    -      -           7.06e-03 2.16e-03   57.880 57
CPL   0.140    3.866      66.1  -17.4      3.55e-02 1.99e+01   57.060 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: 75.328000 sec.
T50 in the 50-300 keV band: 47.616000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   87.360   -9.176   78.184
T90    75.616   -0.696   74.920
T50    43.328   20.888   64.216
Peak    1.000   62.716   63.716

Click here for the BAT GCN circular template

Special notes of this burst

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  168.3739    42.3796   0.0154    34.4510   103.2848         2.2928482     12.513 TRIG_00414905                 
 
Foreground time interval of the image:
 -4.299  71.901 (delta_t =  76.200 [sec])
Background time interval of the image:

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
5) Time of each bin is in the middle of the bin.

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

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

8 ms binning

From T100_start-3 s to T100_start+3 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

2 ms binning

From T100_start-1 s to T100_start+1 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Quad-rate summed light curves (from T0-300s to T0+1000s)

The mask-weighted light curves based on cleaned DPHs

Spectral Evolution

Spectra

Notes:

1) The fitting includes the systematic errors.
2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.

Time averaged spectrum fit using the average DRM

Power-law model

Time interval is from   -9.176 sec. to   78.184 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34886     ( -0.220457   0.219353 )
Norm@50keV  : 1.84672E-03    ( -0.000220495   0.000220136 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.03 using 59 PHA bins.
# Reduced chi-squared =         0.9478 for     57 degrees of freedom 
# Null hypothesis probability =   5.873868e-01
 
Photon flux (15-150 keV)    in 87.36 sec: 0.222425 ( -0.0272894  0.0274071 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.57607e-06 ( -2.09482e-07  2.11326e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -9.176 sec. to   78.184 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.35183     ( -0.584401   0.215627 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 1.84913E-03    ( -0.00185327   0.00154982 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.04 using 59 PHA bins.
# Reduced chi-squared =         0.9650 for     56 degrees of freedom 
# Null hypothesis probability =   5.494800e-01
 
Photon flux (15-150 keV)    in 87.36 sec: 0.222754 ( -0.027717  0.027009 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.57336e-06 ( -2.06711e-07  2.10835e-07 ) ergs/cm2

Band function

Time interval is from   -9.176 sec. to   78.184 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -4.99998   -4.99998 )
beta        : -1.36071    ( -0.232323   0.226337 )
Epeak [keV] : 19.9102      ( -19.9102 6.92487 )
Norm@50keV   : 689.075    ( -81.7376   790363 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.95 using 59 PHA bins.
# Reduced chi-squared =         0.9809 for     55 degrees of freedom 
# Null hypothesis probability =   5.147099e-01
 
Photon flux (15-150 keV)    in 87.36 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]    : 18.2619  (-3.01688  3.78187)
R^2/D10^2   : 1.29271E-02  (-0.00596877   0.0108504)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.07 using 59 PHA bins.
# Reduced chi-squared =          1.352 for     57 degrees of freedom 
# Null hypothesis probability =   3.951234e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.505e-08   1.920e-08
25- 50  3.508e-07   7.426e-08
50-150  8.524e-07   1.919e-07
15-150  1.278e-06   2.376e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 0.919205       (-0.110177     0.110164)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.76 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     57 degrees of freedom 
# Null hypothesis probability =   4.468286e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.000e-07   1.120e-07
25- 50  3.847e-07   2.117e-07
50-150  8.437e-07   4.634e-07
15-150  1.428e-06   7.889e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.80017        (-2.09328      2.94197)
R1^2/D10^2  : 0.445539        (-0.340953      2.51394)
kT2 [keV]   : 28.9075        (-7.34164      18.4101)
R2^2/D10^2  : 2.49500E-03    (-0.00192885   0.00280831)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.06 using 59 PHA bins.
# Reduced chi-squared =         0.9829 for     55 degrees of freedom 
# Null hypothesis probability =   5.105420e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.946e-07   1.029e-07
25- 50  3.301e-07   1.302e-07
50-150  1.071e-06   5.665e-07
15-150  1.596e-06   6.541e-07

Peak spectrum fit

Power-law model

Time interval is from   62.716 sec. to   63.716 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.46351     ( -0.488261   0.501993 )
Norm@50keV  : 7.05764E-03    ( -0.0021751   0.00214471 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.88 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     57 degrees of freedom 
# Null hypothesis probability =   4.424711e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.872711 ( -0.261892  0.262494 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.73718e-08 ( -2.22098e-08  2.28298e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   62.716 sec. to   63.716 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.140013     ( -5.99815   1.73326 )
Epeak [keV] : 66.0960      ( -31.1951 -66.0399 )
Norm@50keV  : 3.55494E-02    ( -0.0357068   39.6819 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.06 using 59 PHA bins.
# Reduced chi-squared =          1.019 for     56 degrees of freedom 
# Null hypothesis probability =   4.355552e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.837652 ( -0.285544  0.273068 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.07581e-08 ( -2.40284e-08  2.6161e-08 ) ergs/cm2

Band function

Time interval is from   62.716 sec. to   63.716 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.465575   ( 0.340741   0.340741 )
beta        : -2.31731    ( 2.12392   1.03782 )
Epeak [keV] : 56.4676      ( -56.2448 181.067 )
Norm@50keV   : 7.93796E-02    ( -0.0860156   160.706 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.62 using 59 PHA bins.
# Reduced chi-squared =          1.030 for     55 degrees of freedom 
# Null hypothesis probability =   4.142074e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.19579e-08 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.8782  (-3.65322  5.64188)
R^2/D10^2   : 0.138814  (-0.138807   0.267625)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.54 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     57 degrees of freedom 
# Null hypothesis probability =   4.549110e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.652e-09   3.466e-09
25- 50  2.084e-08   1.242e-08
50-150  2.631e-08   1.796e-08
15-150  5.280e-08   3.110e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-199.363      -199.363)
Norm        : 3.61163       (-1.06624     1.06738)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.59 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     57 degrees of freedom 
# Null hypothesis probability =   4.531797e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.993e-09   5.555e-09
25- 50  1.730e-08   1.068e-08
50-150  3.794e-08   2.344e-08
15-150  6.424e-08   4.031e-08

Double BB

------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.25 using 59 PHA bins.
#Fit statistic : Chi-Squared =          56.40 using 59 PHA bins.
#Fit statistic : Chi-Squared =          56.38 using 59 PHA bins.
#Fit statistic : Chi-Squared =          56.33 using 59 PHA bins.
# Reduced chi-squared =          1.041 for     55 degrees of freedom 
# Reduced chi-squared =          1.025 for     55 degrees of freedom 
# Reduced chi-squared =          1.025 for     55 degrees of freedom 
# Reduced chi-squared =          1.024 for     55 degrees of freedom 
# Null hypothesis probability =   3.917950e-01
# Null hypothesis probability =   4.223875e-01
# Null hypothesis probability =   4.231650e-01
# Null hypothesis probability =   4.248399e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.098e-09   3.551e-09
25- 50  1.943e-08   1.161e-08
50-150  2.891e-08   1.906e-08
15-150  5.543e-08   3.273e-08

Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

Power-law model

 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38469     ( -0.22212   0.222548 )
Norm@50keV  : 1.92149E-03    ( -0.000237304   0.000236533 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.89 using 59 PHA bins.
# Reduced chi-squared =         0.8577 for     57 degrees of freedom 
# Null hypothesis probability =   7.690384e-01
 
Photon flux (15-150 keV)    in 76.2 sec: 0.233201 ( -0.0292563  0.0293341 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.41929e-06 ( -1.94831e-07  1.96755e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38498     ( -0.780083   0.221417 )
Epeak [keV] : 9999.32      ( -9999.36 -9999.36 )
Norm@50keV  : 1.92643E-03    ( -0.00192732   0.00250028 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.89 using 59 PHA bins.
# Reduced chi-squared =         0.8731 for     56 degrees of freedom 
# Null hypothesis probability =   7.384431e-01
 
Photon flux (15-150 keV)    in 76.2 sec: 0.233241 ( -0.029817  0.028979 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.42169e-06 ( -2.03766e-07  1.93586e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -4.99998   -4.99998 )
beta        : -1.39741    ( -0.236118   0.22816 )
Epeak [keV] : 19.8884      ( -19.8884 7.20598 )
Norm@50keV   : 749.471    ( -91.3257   884893 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.81 using 59 PHA bins.
# Reduced chi-squared =         0.8874 for     55 degrees of freedom 
# Null hypothesis probability =   7.087476e-01
 
Photon flux (15-150 keV)    in 76.2 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

S(25-50 keV) vs. S(50-100 keV) plot

S(25-50 keV)  = 3.60e-07
S(50-100 keV) = 5.66e-07

T90 vs. Hardness ratio plot

T90                                   = 75.6159999966621 sec.
Hardness ratio (energy fluence ratio) = 1.57222

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.16226
Count Ratio (50-100 keV) / (15-25 keV) = 1.15977

Mask shadow pattern

IMX = -1.576418676268291E-01, IMY = -6.676649840209761E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

Spacecraft aspect plot

Bright source in the pre-burst/pre-slew/post-slew images

Pre-burst image of 15-350 keV band

Time interval of the image:

Pre-slew background subtracted image of 15-350 keV band

Time interval of the image:
-4.299400 71.900600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4156  35.4385    6.4  47.8   -3.5   0.3188   1.8    6.1	Her X-1                       
180.0470  35.6568    2.4  39.6   86.6   1.6610   4.8 ------	UNKNOWN                       
168.3738  42.3796    0.9  34.5  103.3   2.2930  12.5 ------	UNKNOWN                       
245.1637  29.5002    2.3  51.3    8.6   1.2496   5.1 ------	UNKNOWN                       
151.4617  77.7265    2.8  10.7 -166.0   0.3319   4.1 ------	UNKNOWN                       
266.8389  33.3700    2.6  53.0  -15.3   0.9293   4.5 ------	UNKNOWN                       
296.1453  61.0377    3.4  34.9  -57.1   0.4527   3.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
126.100600 267.100590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
172.4964   9.9516    2.4  32.6   78.5   1.0998   4.9 ------	UNKNOWN                       
124.8380  26.1046    2.3  39.0  165.6   0.9371   5.0 ------	UNKNOWN                       
105.8305  24.1061    3.0  54.1  177.3   1.6158   3.8 ------	UNKNOWN

Plot creation:
Thu Jun 18 21:07:36 EDT 2015