batgrbproduct analysis for trigger=777215

batgrbproduct Analysis for Trigger=777215

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 Oct 19 18:44:10 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger777215
======================================================================

  Trigger: 00777215      Segment: 000

  BAT Trigger Time: 529070278.08   [s; MET]
      Trigger Stop: 529070280.128   [s; MET]
               UTC: 2017-10-07T11:57:38.277120    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 135.543621795884   Dec: 42.8493348720254  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.18
     Image Trigger?:     NO
     Rate S/N Ratio:     13.6747943311773  [ if not an image trigger ]
     Image S/N Ratio:    8.18

  Flight Position:   [ source = BAT ]
    RA: 135.543621795884   Dec: 42.8493348720254  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 135.544   Dec: 42.8493  [deg; J2000]
        { 09h 02m 10.6s , +42d 50' 57.5" }
        +/- 2.32874993422 [arcmin] (estimated 90% radius based on SNR)
    SNR: 9.09314204559
 
 
  Angular difference between Flight and Ground position is 0.016768 arcmin
 
  Partial Coding Fraction: 1.03125    [ including projection effects ]

  Duration
     T90: 68.4239999651909 +/- 19.3288518403932
        Measured from: 0.480000019073486
                   to: 68.9039999842644     [s; relative to TRIGTIME]
     T50: 46.1679999232292 +/- 28.6269932006757
        Measured from: 1.95200002193451
                   to: 48.1199999451637     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.452000021934509     
                   to: 1.45200002193451     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.155999958515167     
                   to: 83.3479999899864     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.101361   0.197096   0.100734   0.028823
           0.045752   0.047675   0.042276   0.038092 [error]
 Peak      0.011085   0.026117   0.026586   0.011561
           0.005169   0.005470   0.005128   0.004523 [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 3.00e-08 6.05e-08 9.52e-08 3.30e-07 2.65e-07 5.14e-07   erg/cm2
              Error 1.47e-08 2.02e-08 3.73e-08 2.67e-07 9.47e-08 2.99e-07   erg/cm2
Peak flux Power-law 1.14e-01 1.62e-01 1.70e-01 3.31e-01 5.50e-01 7.77e-01   ph/cm2/s
              Error 5.09e-02 4.42e-02 3.94e-02 1.70e-01 1.20e-01 1.92e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.57e-08 8.68e-08 9.35e-08 8.93e-09 2.05e-07 2.05e-07   erg/cm2
              Error 1.65e-08 3.04e-08 5.14e-08 -------- 8.30e-08 9.47e-08   erg/cm2
Peak flux Cutoff-PL 9.80e-02 1.68e-01 1.82e-01 1.74e-01 5.36e-01 6.23e-01   ph/cm2/s
              Error 6.21e-02 5.01e-02 4.87e-02 1.91e-01 1.27e-01 2.25e-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    1.351    0.483    -      -           3.24e-04 1.06e-04   79.250 57
CPL  -3.260    0.190      52.7   21.0      8.03e-02 1.10e+02   73.270 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.927    0.382    -      -           4.79e-03 1.04e-03   65.790 57
CPL   0.291    1.614     148.9    0.0      9.39e-03 4.12e-02   65.320 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: 3.072000 sec.
T50 in the 50-300 keV band: 1.344000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   83.504   -0.156   83.348
T90    68.424    0.480   68.904
T50    46.168    1.952   48.120
Peak    1.000    0.452    1.452

Click here for the BAT GCN circular template

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

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
135.544 42.849 0.000 10.186 -8.975 0.138 9.093 TRIG_00777215

Image time interval: 0.000 to 2.240 [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 2.048000

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 2.048000

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 2.048000

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   -0.156 sec. to   83.348 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.35148     ( -0.481681   0.485282 )
Norm@50keV  : 3.24044E-04    ( -0.000105834   0.000105353 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          79.25 using 59 PHA bins.
# Reduced chi-squared =          1.390 for     57 degrees of freedom 
# Null hypothesis probability =   2.731207e-02
 
Photon flux (15-150 keV)    in 83.5 sec: 3.90401E-02 ( -0.0125265  0.0126071 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.64476e-07 ( -9.27184e-08  9.66396e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.156 sec. to   83.348 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -3.25996     ( 3.51879   3.89855 )
Epeak [keV] : 52.7195      ( -10.2908 31.7793 )
Norm@50keV  : 8.02692E-02    ( -0.0772621   219.17 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.27 using 59 PHA bins.
# Reduced chi-squared =          1.308 for     56 degrees of freedom 
# Null hypothesis probability =   6.053977e-02
 
Photon flux (15-150 keV)    in 83.5 sec: 3.45320E-02 ( -0.0125957  0.0128289 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.04558e-07 ( -7.23111e-08  9.36478e-08 ) ergs/cm2

Band function

Time interval is from   -0.156 sec. to   83.348 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]    : 14.4846  (-3.42384  4.97667)
R^2/D10^2   : 5.80969E-03  (-0.0058097   0.00908725)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.62 using 59 PHA bins.
# Reduced chi-squared =          1.292 for     57 degrees of freedom 
# Null hypothesis probability =   6.838404e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.142e-08   1.333e-08
25- 50  8.235e-08   4.910e-08
50-150  1.157e-07   7.519e-08
15-150  2.195e-07   1.245e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.361       (-199.363      -199.363)
Norm        : 0.162822       (-0.051537     0.051574)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          78.60 using 59 PHA bins.
# Reduced chi-squared =          1.379 for     57 degrees of freedom 
# Null hypothesis probability =   3.053922e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.385e-08   2.211e-08
25- 50  6.512e-08   4.005e-08
50-150  1.428e-07   8.663e-08
15-150  2.418e-07   1.481e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 14.4359        (-14.4767      -14.4767)
R1^2/D10^2  : 3.81307E-04        (-0.000383676      -0.000383676)
kT2 [keV]   : 14.4937        (-14.486      -14.486)
R2^2/D10^2  : 5.42060E-03    (-0.0054247   -0.0054247)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.62 using 59 PHA bins.
# Reduced chi-squared =          1.339 for     55 degrees of freedom 
# Null hypothesis probability =   4.753850e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.140e-08   1.716e+00
25- 50  8.232e-08   1.598e+01
50-150  1.158e-07   3.327e+02
15-150  2.195e-07   3.627e+02

Peak spectrum fit

Power-law model

Time interval is from    0.452 sec. to    1.452 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.926946     ( -0.397051   0.367905 )
Norm@50keV  : 4.79374E-03    ( -0.00104575   0.001037 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.79 using 59 PHA bins.
# Reduced chi-squared =          1.154 for     57 degrees of freedom 
# Null hypothesis probability =   1.987962e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.550424 ( -0.11999  0.120498 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.32513e-08 ( -1.24062e-08  1.25948e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.452 sec. to    1.452 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.290651     ( -2.26028   0.966731 )
Epeak [keV] : 148.928      ( -148.954 -148.954 )
Norm@50keV  : 9.38672E-03    ( -0.00547917   0.0769161 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.32 using 59 PHA bins.
# Reduced chi-squared =          1.166 for     56 degrees of freedom 
# Null hypothesis probability =   1.845628e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.535788 ( -0.127259  0.125835 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.09988e-08 ( -1.40806e-08  1.37706e-08 ) ergs/cm2

Band function

Time interval is from    0.452 sec. to    1.452 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]    : 21.5090  (-5.18976  8.24363)
R^2/D10^2   : 2.14792E-02  (-0.0135329   0.0301984)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.04 using 59 PHA bins.
# Reduced chi-squared =          1.176 for     57 degrees of freedom 
# Null hypothesis probability =   1.706358e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.858e-09   8.612e-10
25- 50  9.692e-09   4.132e-09
50-150  3.347e-08   1.597e-08
15-150  4.502e-08   2.016e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-63.5264      -200)
Norm        : 2.19148       (-0.496992     0.496992)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.84 using 59 PHA bins.
# Reduced chi-squared =          1.278 for     57 degrees of freedom 
# Null hypothesis probability =   7.694910e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.459e-09   3.223e-09
25- 50  1.050e-08   6.290e-09
50-150  2.303e-08   1.369e-08
15-150  3.899e-08   2.315e-08

Double BB

------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.36 using 59 PHA bins.
#Fit statistic : Chi-Squared =          65.34 using 59 PHA bins.
#Fit statistic : Chi-Squared =          65.24 using 59 PHA bins.
#Fit statistic : Chi-Squared =          65.16 using 59 PHA bins.
# Reduced chi-squared =          1.188 for     55 degrees of freedom 
# Reduced chi-squared =          1.188 for     55 degrees of freedom 
# Reduced chi-squared =          1.186 for     55 degrees of freedom 
# Reduced chi-squared =          1.185 for     55 degrees of freedom 
# Null hypothesis probability =   1.599824e-01
# Null hypothesis probability =   1.603465e-01
# Null hypothesis probability =   1.624899e-01
# Null hypothesis probability =   1.641741e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.023e-09   1.987e-09
25- 50  9.947e-09   5.605e-09
50-150  3.705e-08   2.168e-08
15-150  5.002e-08   2.761e-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: 1.11678     ( -0.583198   0.548722 )
Norm@50keV  : 5.42001E-04    ( -0.000186803   0.000186749 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.52 using 59 PHA bins.
# Reduced chi-squared =          1.185 for     57 degrees of freedom 
# Null hypothesis probability =   1.605488e-01
 
Photon flux (15-150 keV)    in 26.58 sec: 6.29703E-02 ( -0.0220042  0.0221768 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.49868e-07 ( -5.55025e-08  5.73131e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.02479     ( -6.84322   2.34976 )
Epeak [keV] : 72.9927      ( -21.5378 -72.9888 )
Norm@50keV  : 5.84170E-03    ( -0.00584338   12.0719 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.52 using 59 PHA bins.
# Reduced chi-squared =          1.170 for     56 degrees of freedom 
# Null hypothesis probability =   1.799431e-01
 
Photon flux (15-150 keV)    in 26.58 sec: 5.81148E-02 ( -0.0223554  0.0229278 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.29511e-07 ( -5.6415e-08  6.31262e-08 ) 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)  = 6.05e-08
S(50-100 keV) = 9.52e-08

T90 vs. Hardness ratio plot

T90                                   = 68.4239999651909 sec.
Hardness ratio (energy fluence ratio) = 1.57355

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.9445
Count Ratio (50-100 keV) / (15-25 keV) = 0.993814

Mask shadow pattern

IMX = 1.756683852061149E-01, IMY = 2.862029514155098E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

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:
-239.080000 -0.156000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 99.6957  28.7271    2.4  37.6   41.9   1.6797   4.7 ------	UNKNOWN                       
110.9178   1.9867    3.1  55.9   10.7   4.0334   3.7 ------	UNKNOWN                       
278.6078  66.5603    2.5  56.8  173.9   5.2825   4.6 ------	UNKNOWN                       
125.2458  48.7833    2.4   9.6   47.1   0.8648   4.8 ------	UNKNOWN                       
222.4781  53.5155    2.5  47.0 -150.3   2.1715   4.7 ------	UNKNOWN                       
150.9208   3.1208    3.0  50.6  -39.4   3.3309   3.9 ------	UNKNOWN

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

Time interval of the image:
-0.156000 26.420600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']

Post-slew image of 15-350 keV band

Time interval of the image:
57.820610 963.038900
1833.920000 2000.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
110.6163   9.4892    3.1  39.8   13.4   3.3594   3.7 ------	UNKNOWN                       
117.7987  17.0442    3.2  29.9    8.7   2.2865   3.7 ------	UNKNOWN                       
210.5680  64.2392    2.6  46.0 -171.4   5.6770   4.3 ------	UNKNOWN                       
187.2502  29.5535    2.9  43.1 -116.7  10.5512   3.9 ------	UNKNOWN                       
152.4612  -3.0090    2.5  48.3  -50.0  14.6864   4.7 ------	UNKNOWN

Plot creation:
Fri Oct 20 11:28:44 EDT 2017