batgrbproduct analysis for trigger=737463

batgrbproduct Analysis for Trigger=737463

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): Wed Apr 12 15:09:49 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger737463
======================================================================

  Trigger: 00737463      Segment: 000

  BAT Trigger Time: 508286037.504   [s; MET]
      Trigger Stop: 508286038.528   [s; MET]
               UTC: 2017-02-08T22:33:38.918640    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 127.154926883595   Dec: -9.02663175947905  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    24.42
     Image Trigger?:     NO
     Rate S/N Ratio:     162.104904305823  [ if not an image trigger ]
     Image S/N Ratio:    24.42

  Flight Position:   [ source = BAT ]
    RA: 127.154926883595   Dec: -9.02663175947905  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 127.145176593062   Dec: -9.0276530394913  [deg; J2000]  
        { 08h 28m 34.8s , -09d 01' 39.6" }
         +/- 0.504156686477321 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.136884104728147 [arcmin] (formal 1-sigma fit error)
    SNR: 80.9142035358205
 
  Angular difference between Flight and Ground position is 0.581012 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 128.135999917984 +/- 5.7189677071751
        Measured from: -5.47200000286102
                   to: 122.663999915123     [s; relative to TRIGTIME]
     T50: 7.69999992847443 +/- 0.482012482525025
        Measured from: 1.28799998760223
                   to: 8.98799991607666     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.420000016689301     
                   to: 1.4200000166893     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -18.1999999880791     
                   to: 159.300000011921     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.154018   4.240395   2.863969   0.619649
           0.077338   0.080268   0.068566   0.056833 [error]
 Peak      0.176390   0.410385   0.415972   0.103736
           0.008292   0.010904   0.010975   0.006714 [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 9.71e-07 1.66e-06 2.15e-06 5.66e-06 6.32e-06 1.04e-05   erg/cm2
              Error 4.79e-08 4.71e-08 7.06e-08 4.20e-07 1.70e-07 4.61e-07   erg/cm2
Peak flux Power-law 1.88e+00 2.53e+00 2.52e+00 4.51e+00 8.40e+00 1.14e+01   ph/cm2/s
              Error 1.13e-01 9.49e-02 8.31e-02 3.08e-01 2.63e-01 3.81e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.80e-07 1.70e-06 2.20e-06 3.18e-06 6.11e-06 7.97e-06   erg/cm2
              Error 6.13e-08 5.26e-08 7.74e-08 8.05e-07 1.96e-07 8.26e-07   erg/cm2
Peak flux Cutoff-PL 1.52e+00 2.65e+00 2.79e+00 2.27e+00 8.20e+00 9.23e+00   ph/cm2/s
              Error 1.39e-01 1.07e-01 1.11e-01 3.87e-01 2.67e-01 4.61e-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    1.622    0.049    -      -           3.82e-03 9.77e-05   71.740 57
CPL   1.185    0.209      97.8   27.7      6.16e-03 1.39e-03   57.690 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.009    0.050    -      -           7.29e-02 2.24e-03  112.180 57
CPL   0.186    0.231     127.8   21.4      1.69e-01 3.91e-02   68.590 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: 16.768000 sec.
T50 in the 50-300 keV band: 4.224000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  177.500  -18.200  159.300
T90   128.136   -5.472  122.664
T50     7.700    1.288    8.988
Peak    1.000    0.420    1.420

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  127.1452    -9.0277   0.0024     5.2096   -88.5661         9.0754375     80.914 TRIG_00737463                 
 
Foreground time interval of the image:
-18.200  13.597 (delta_t =  31.797 [sec])
Background time interval of the image:
-239.504 -18.200 (delta_t = 221.304 [sec])

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 1.024000

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 1.024000

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 1.024000

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)

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  -18.200 sec. to  159.300 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.62197     ( -0.0485067   0.048611 )
Norm@50keV  : 3.82088E-03    ( -9.76805e-05   9.76399e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.74 using 59 PHA bins.
# Reduced chi-squared =          1.259 for     57 degrees of freedom 
# Null hypothesis probability =   9.038666e-02
 
Photon flux (15-150 keV)    in 177.5 sec: 0.494419 ( -0.013887  0.01393 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.32731e-06 ( -1.69468e-07  1.69626e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -18.200 sec. to  159.300 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.18454     ( -0.213698   0.203953 )
Epeak [keV] : 97.7885      ( -16.1569 39.2159 )
Norm@50keV  : 6.15855E-03    ( -0.00120172   0.00157901 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.69 using 59 PHA bins.
# Reduced chi-squared =          1.030 for     56 degrees of freedom 
# Null hypothesis probability =   4.124534e-01
 
Photon flux (15-150 keV)    in 177.5 sec: 0.477849 ( -0.015584  0.015657 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.10996e-06 ( -1.96679e-07  1.96251e-07 ) ergs/cm2

Band function

Time interval is from  -18.200 sec. to  159.300 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 15.0259  (  )
R^2/D10^2   : 5.21079E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         313.13 using 59 PHA bins.
# Reduced chi-squared =         5.4936 for     57 degrees of freedom 
# Null hypothesis probability =   4.814780e-37
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.371e-07   2.307e-08
25- 50  1.739e-06   5.946e-08
50-150  2.675e-06   1.322e-07
15-150  4.851e-06   1.340e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 174.499       (-22.8522      -174.015)
Norm        : 1.99513       (-0.0604517     0.0625026)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.98 using 59 PHA bins.
# Reduced chi-squared =          1.017 for     57 degrees of freedom 
# Null hypothesis probability =   4.387581e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.962e-07   4.597e-08
25- 50  1.696e-06   1.035e-07
50-150  3.551e-06   7.846e-07
15-150  6.143e-06   8.981e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.89663        (-0.805399      0.831866)
R1^2/D10^2  : 0.333489        (-0.0895336      0.139911)
kT2 [keV]   : 26.5300        (-2.81292      3.8414)
R2^2/D10^2  : 5.11163E-03    (-0.00202417   0.00278818)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.67 using 59 PHA bins.
# Reduced chi-squared =          1.139 for     55 degrees of freedom 
# Null hypothesis probability =   2.229266e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.683e-07   6.417e-08
25- 50  1.758e-06   1.022e-07
50-150  3.524e-06   3.239e-07
15-150  6.050e-06   4.855e-07

Peak spectrum fit

Power-law model

Time interval is from    0.420 sec. to    1.420 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00873     ( -0.0499937   0.0497516 )
Norm@50keV  : 7.28967E-02    ( -0.00224429   0.00224294 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         112.18 using 59 PHA bins.
# Reduced chi-squared =         1.9681 for     57 degrees of freedom 
# Null hypothesis probability =   1.801411e-05
 
Photon flux (15-150 keV)    in 1 sec: 8.39651 ( -0.26291  0.26304 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.85923e-07 ( -2.59818e-08  2.60096e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.420 sec. to    1.420 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.185998     ( -0.236424   0.225265 )
Epeak [keV] : 127.821      ( -16.3097 26.4587 )
Norm@50keV  : 0.168985    ( -0.0337946   0.0443782 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.59 using 59 PHA bins.
# Reduced chi-squared =          1.225 for     56 degrees of freedom 
# Null hypothesis probability =   1.205234e-01
 
Photon flux (15-150 keV)    in 1 sec: 8.20138 ( -0.26715  0.26734 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.24406e-07 ( 0  0 ) ergs/cm2

Band function

Time interval is from    0.420 sec. to    1.420 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 21.5492  (  )
R^2/D10^2   : 0.333363  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         161.24 using 59 PHA bins.
# Reduced chi-squared =         2.8288 for     57 degrees of freedom 
# Null hypothesis probability =   6.807914e-12
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.892e-08   1.760e-09
25- 50  1.510e-07   6.300e-09
50-150  5.236e-07   2.660e-08
15-150  7.035e-07   2.455e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 33.8482       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         403.30 using 59 PHA bins.
# Reduced chi-squared =         7.0755 for     57 degrees of freedom 
# Null hypothesis probability =   1.273513e-53
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.429e-08   2.870e-09
25- 50  1.621e-07   5.100e-09
50-150  3.556e-07   1.150e-08
15-150  6.020e-07   1.935e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.6158        (-1.64724      1.88383)
R1^2/D10^2  : 1.47881        (-0.445817      0.740042)
kT2 [keV]   : 33.3065        (-4.21914      7.54925)
R2^2/D10^2  : 6.49575E-02    (-0.033132   0.0415039)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.20 using 59 PHA bins.
# Reduced chi-squared =          1.149 for     55 degrees of freedom 
# Null hypothesis probability =   2.092000e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.509e-08   5.840e-09
25- 50  1.610e-07   1.890e-08
50-150  5.636e-07   8.815e-08
15-150  7.697e-07   9.520e-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: 1.50081     ( -0.0335253   0.0335041 )
Norm@50keV  : 1.83603E-02    ( -0.000330689   0.000330638 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          87.82 using 59 PHA bins.
# Reduced chi-squared =          1.541 for     57 degrees of freedom 
# Null hypothesis probability =   5.444761e-03
 
Photon flux (15-150 keV)    in 31.8 sec: 2.29258 ( -0.0477944  0.0479479 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.53803e-06 ( -1.01475e-07  1.01503e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00932     ( -0.149063   0.144508 )
Epeak [keV] : 115.910      ( -14.206 24.3176 )
Norm@50keV  : 3.00607E-02    ( -0.00396345   0.00470982 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.90 using 59 PHA bins.
# Reduced chi-squared =         0.9269 for     56 degrees of freedom 
# Null hypothesis probability =   6.305731e-01
 
Photon flux (15-150 keV)    in 31.8 sec: 2.20177 ( -0.05304  0.05341 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.3893e-06 ( -1.11014e-07  1.10823e-07 ) ergs/cm2

Band function

 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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)  = 1.66e-06
S(50-100 keV) = 2.15e-06

T90 vs. Hardness ratio plot

T90                                   = 128.135999917984 sec.
Hardness ratio (energy fluence ratio) = 1.29518

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.34444
Count Ratio (50-100 keV) / (15-25 keV) = 0.908038

Mask shadow pattern

IMX = 2.281533739279347E-03, IMY = 9.114666211638471E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

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:
-239.504000 -18.200000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6266  22.0365    1.0  51.4   15.1   8.0935  11.9    1.4	Crab                          
135.5309 -40.5365    1.3  36.9 -116.0   3.5162   9.2    1.1	Vela X-1                      
147.3850  32.6694    2.9  40.8   96.6   3.7622   4.0 ------	UNKNOWN                       
122.9528  -5.7734    3.5   6.1  -33.6   0.6258   3.3 ------	UNKNOWN                       
 89.5633 -30.6700    2.8  45.5  -57.8   4.0489   4.1 ------	UNKNOWN                       
137.7682 -47.4577    2.6  44.0 -116.2   3.6904   4.4 ------	UNKNOWN

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

Time interval of the image:
-18.200000 13.596590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.5125  21.9195    4.8  51.4   14.9   0.8994   2.4    8.8	Crab                          
135.5422 -40.5893    3.5  37.0 -116.0  -0.6903  -3.2    2.2	Vela X-1                      
102.3331  24.6047    1.7  38.6   31.8   1.2368   6.6 ------	UNKNOWN                       
127.1452  -9.0276    0.1   5.2  -88.6   9.0757  80.9 ------	UNKNOWN                       
 70.2505   2.3413    2.4  58.9  -12.3   3.0995   4.8 ------	UNKNOWN                       
102.4158 -28.0245    2.5  34.7  -63.9   0.8785   4.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
48.796590 962.556800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6276  22.0197    0.6  52.8    3.6  32.2923  19.9    0.4	Crab                          
135.5480 -40.5468    0.5  32.4 -135.0  18.7947  25.0    1.0	Vela X-1                      
109.5097  32.7628    3.1  45.0   35.8   5.1612   3.8 ------	UNKNOWN                       
 78.9301  19.9325    2.5  55.6   -1.2  10.1219   4.7 ------	UNKNOWN                       
120.9990  -9.1044    3.5   6.1  -34.5   1.8060   3.4 ------	UNKNOWN                       
169.4881 -51.7153    2.9  54.9 -153.7  12.0467   4.0 ------	UNKNOWN                       
 93.1021 -33.9597    3.4  40.0  -76.8   8.0411   3.4 ------	UNKNOWN                       
 83.4662 -25.2838    3.0  44.5  -60.1  12.5257   3.9 ------	UNKNOWN

Plot creation:
Thu Apr 13 21:59:09 EDT 2017