batgrbproduct analysis for trigger=702473

batgrbproduct Analysis for Trigger=702473

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
4) This page will be updated for up to 10 downlinks after the trigger.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Jul  2 16:01:40 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger702473/GCN5_download_cron
======================================================================

  Trigger: 00702473      Segment: 000

  BAT Trigger Time: 489097800   [s; MET]
      Trigger Stop: 489097912   [s; MET]
               UTC: 2016-07-01T20:29:43.502300    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 299.803607932221   Dec: 35.3416226175907  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.04
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.04

  Flight Position:   [ source = BAT ]
    RA: 299.803607932221   Dec: 35.3416226175907  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 299.682784669694   Dec: 35.2359151379525  [deg; J2000]  
        { 19h 58m 43.9s , +35d 14' 09.3" }
         +/- 0.951687347743552 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.291938672185896 [arcmin] (formal 1-sigma fit error)
    SNR: 32.6468147464362
 
  Angular difference between Flight and Ground position is 8.674178 arcmin
 
  Partial Coding Fraction: 0.90625    [ including projection effects ]

  Duration
     T90: 714.51599997282 +/- 44.4827377326248
        Measured from: -102.895999908447
                   to: 611.620000064373     [s; relative to TRIGTIME]
     T50: 394.763999938965 +/- 36.7601900147343
        Measured from: 33.4640001058578
                   to: 428.228000044823     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 132.10799998045     
                   to: 133.10799998045     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -174.796000003815     
                   to: 654.139999985695     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     4.139081   4.788349   3.038431   0.605627
           0.156850   0.161101   0.140528   0.123764 [error]
 Peak      0.026096   0.019156   0.013188   0.011077
           0.005576   0.005634   0.005024   0.004367 [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 1.17e-06 1.93e-06 2.40e-06 5.93e-06 7.17e-06 1.14e-05   erg/cm2
              Error 8.72e-08 8.23e-08 1.42e-07 7.76e-07 3.28e-07 8.76e-07   erg/cm2
Peak flux Power-law 1.56e-01 1.54e-01 1.07e-01 1.16e-01 4.64e-01 5.33e-01   ph/cm2/s
              Error 7.42e-02 4.38e-02 4.29e-02 1.03e-01 1.27e-01 1.54e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.16e-06 1.94e-06 2.41e-06 5.45e-06 7.14e-06 1.09e-05   erg/cm2
              Error 9.87e-08 9.07e-08 1.45e-07 1.60e-06 3.65e-07 1.66e-06   erg/cm2
Peak flux Cutoff-PL 1.57e-01 1.55e-01 1.06e-01 1.14e-01 4.64e-01 5.32e-01   ph/cm2/s
              Error 7.25e-02 4.38e-02 5.34e-02 9.95e-02 1.26e-01 1.20e-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    1.684    0.081    -      -           9.34e-04 4.02e-05   50.390 57
CPL   1.659    0.207     689.6    0.0      9.61e-04 0.00e+00   50.370 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.533    0.568    -      -           3.68e-03 1.12e-03   45.860 57
CPL   2.708    1.686     222.1    0.0      9.06e-04 0.00e+00   45.220 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  828.936 -174.796  654.140
T90   714.516 -102.896  611.620
T50   394.764   33.464  428.228
Peak    1.000  132.108  133.108

Click here for the BAT GCN circular template

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

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  299.6828 +35.2359 0.0059   14.0  121.4       8.2540    32.6  TRIG_00702473       
------------------------------------------
 
Foreground time interval of the image:
-139.799 121.501 (delta_t = 261.300 [sec])
Background time interval of the image:

Lightcurves

Notes:

1) All plots contain as much data as has been downloaded to date.
2) The mask-weighted light curves are using the flight position.
3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
4) 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.
5) 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.
6) 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

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:

1) The fitting includes the systematic errors.
2) For long bursts, a spectral fit of 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.
4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.

Time averaged spectrum fit using the pre-slew DRM

Power-law model

Multiple GTIs in the spectrum
tstart tstop
-174.796000 282.550000
284.000000 654.140000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.68378     ( -0.080745   0.0814102 )
Norm@50keV  : 9.34469E-04    ( -4.02799e-05   4.01022e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.39 using 59 PHA bins.
# Reduced chi-squared =         0.8840 for     57 degrees of freedom 
# Null hypothesis probability =   7.196212e-01
 
Photon flux (15-150 keV)    in 827.5 sec: 0.123413 ( -0.00528643  0.00530553 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.16915e-06 ( -3.27032e-07  3.2892e-07 ) ergs/cm2

Cutoff power-law model

Multiple GTIs in the spectrum
tstart tstop
-174.796000 282.550000
284.000000 654.140000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65950     ( -0.310155   0.104329 )
Epeak [keV] : 689.629      (   )
Norm@50keV  : 9.61288E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.37 using 59 PHA bins.
# Reduced chi-squared =         0.8995 for     56 degrees of freedom 
# Null hypothesis probability =   6.869910e-01
 
Photon flux (15-150 keV)    in 827.5 sec: 0.122940 ( -0.005646  0.005717 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.13834e-06 ( -3.73194e-07  3.57761e-07 ) ergs/cm2

Band function

Multiple GTIs in the spectrum
tstart tstop
-174.796000 282.550000
284.000000 654.140000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.39824   ( 1.26106   1.26106 )
beta        : -1.72189    ( 1.71207   0.10472 )
Epeak [keV] : 75.4094      ( -57.1333 -57.1333 )
Norm@50keV   : 1.39269E-03    ( -0.00045157   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.06 using 59 PHA bins.
# Reduced chi-squared =         0.9101 for     55 degrees of freedom 
# Null hypothesis probability =   6.635549e-01
 
Photon flux (15-150 keV)    in 827.5 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]    : 13.3493  (  )
R^2/D10^2   : 1.93444E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         196.69 using 59 PHA bins.
# Reduced chi-squared =         3.4507 for     57 degrees of freedom 
# Null hypothesis probability =   2.959979e-17
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.046e-07   5.193e-08
25- 50  2.142e-06   1.134e-07
50-150  2.450e-06   2.292e-07
15-150  5.196e-06   2.445e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 142.604       (-25.6234      43.6678)
Norm        : 0.507157       (-0.0272457     0.0274775)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.42 using 59 PHA bins.
# Reduced chi-squared =         0.9548 for     57 degrees of freedom 
# Null hypothesis probability =   5.722997e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.055e-06   7.572e-08
25- 50  1.961e-06   1.576e-07
50-150  3.899e-06   1.120e-06
15-150  6.916e-06   1.263e-06

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.91833        (-0.895282      0.941985)
R1^2/D10^2  : 0.149969        (-0.0534262      0.0972083)
kT2 [keV]   : 27.1333        (-4.09834      6.15127)
R2^2/D10^2  : 1.19896E-03    (-0.000602347   0.000976767)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.80 using 59 PHA bins.
# Reduced chi-squared =         0.9783 for     55 degrees of freedom 
# Null hypothesis probability =   5.203722e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.064e-06   1.461e-07
25- 50  1.978e-06   2.135e-07
50-150  4.047e-06   6.856e-07
15-150  7.088e-06   9.268e-07

Peak spectrum fit

Power-law model

Time interval is from  132.108 sec. to  133.108 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.53293     ( -0.56107   0.575717 )
Norm@50keV  : 3.67985E-03    ( -0.00115385   0.00107891 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.86 using 59 PHA bins.
# Reduced chi-squared =         0.8046 for     57 degrees of freedom 
# Null hypothesis probability =   8.546400e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.463582 ( -0.126454  0.126552 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.47291e-08 ( -1.15e-08  1.2093e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from  132.108 sec. to  133.108 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.70821     ( -2.0311   1.34096 )
Epeak [keV] : 222.098      (   )
Norm@50keV  : 9.05875E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.22 using 59 PHA bins.
# Reduced chi-squared =         0.8075 for     56 degrees of freedom 
# Null hypothesis probability =   8.480412e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.463598 ( -0.125996  0.126296 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.44181e-08 ( -1.11898e-08  1.18461e-08 ) ergs/cm2

Band function

Time interval is from  132.108 sec. to  133.108 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99121   ( -4.99121   -4.99121 )
beta        : -1.63833    ( -0.818393   0.616385 )
Epeak [keV] : 22.3244      ( -22.3244 60.3062 )
Norm@50keV   : 833.887    ( -225.068   3.50757e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.42 using 59 PHA bins.
# Reduced chi-squared =         0.8258 for     55 degrees of freedom 
# Null hypothesis probability =   8.180574e-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]    : 9.31439  (-3.21341  12.8638)
R^2/D10^2   : 0.263049  (-0.257889   1.05277)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.40 using 59 PHA bins.
# Reduced chi-squared =         0.9368 for     57 degrees of freedom 
# Null hypothesis probability =   6.109048e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.518e-09   2.811e-09
25- 50  1.012e-08   6.015e-09
50-150  4.286e-09   3.277e-09
15-150  1.893e-08   1.176e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-199.363      -199.363)
Norm        : 1.87016       (-0.512656     0.512714)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.55 using 59 PHA bins.
# Reduced chi-squared =         0.8167 for     57 degrees of freedom 
# Null hypothesis probability =   8.370645e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.657e-09   2.813e-09
25- 50  8.958e-09   5.520e-09
50-150  1.965e-08   1.180e-08
15-150  3.326e-08   1.976e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.23282        (-2.22351      2.76341)
R1^2/D10^2  : 1.02086        (-0.820801      5.26903)
kT2 [keV]   : 57.4174        (-34.5173      -57.4172)
R2^2/D10^2  : 7.89067E-04    (-0.000736395   0.00857894)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.99 using 59 PHA bins.
# Reduced chi-squared =         0.7817 for     55 degrees of freedom 
# Null hypothesis probability =   8.801857e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.809e-09   3.446e-09
25- 50  7.905e-09   4.418e-09
50-150  2.688e-08   1.513e-08
15-150  4.059e-08   2.005e-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: 1.71189     ( -0.118021   0.119975 )
Norm@50keV  : 1.06656E-03    ( -7.33261e-05   7.2555e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.02 using 59 PHA bins.
# Reduced chi-squared =         0.8250 for     57 degrees of freedom 
# Null hypothesis probability =   8.242580e-01
 
Photon flux (15-150 keV)    in 261.3 sec: 0.142245 ( -0.00891389  0.00892675 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.57802e-06 ( -1.86137e-07  1.88156e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65282     ( -0.444327   0.470573 )
Epeak [keV] : 260.058      (   )
Norm@50keV  : 1.14648E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.97 using 59 PHA bins.
# Reduced chi-squared =         0.8387 for     56 degrees of freedom 
# Null hypothesis probability =   7.996740e-01
 
Photon flux (15-150 keV)    in 261.3 sec: 0.141755 ( -0.009482  0.009249 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.56318e-06 ( -2.17279e-07  2.00247e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.15452   ( 0.822496   2.15452 )
beta        : -1.71189    ( -0.119976   0.118027 )
Epeak [keV] : 218.229      ( -218.229 -218.229 )
Norm@50keV   : 0.144961    ( -0.00996605   0.00986125 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.02 using 59 PHA bins.
# Reduced chi-squared =         0.8550 for     55 degrees of freedom 
# Null hypothesis probability =   7.692130e-01
 
Photon flux (15-150 keV)    in 261.3 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)  = 1.93e-06
S(50-100 keV) = 2.40e-06

T90 vs. Hardness ratio plot

T90                                   = 714.51599997282 sec.
Hardness ratio (energy fluence ratio) = 1.24352

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.15686
Count Ratio (50-100 keV) / (15-25 keV) = 0.734083

Mask shadow pattern

IMX = -1.303134951603616E-01, IMY = -2.131163975891250E-01

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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:
-139.799400 121.500590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4581  35.3413 1845.6  47.0  158.8  -0.0039  -0.0    0.1	Her X-1                       
288.9140  10.9616    5.4  38.8  100.2   1.8682   2.1    6.9	GRS 1915+105                  
299.6828  35.2359    0.4  14.0  121.4   8.2536  32.6    5.0	Cyg X-1                       
308.1953  40.9853    1.1   5.5  135.7   2.2780  10.5    4.3	Cyg X-3                       
326.3880  38.2886    5.6   9.3  -12.8   0.5174   2.1   10.4	Cyg X-2                       
 16.8874  22.3840    4.1  54.4  -33.0   3.7805   2.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
157.000590 282.550000
284.000000 609.300610
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.6133  35.2352    9.6  36.5  174.2  -0.5750  -1.2   10.0	Her X-1                       
288.8256  11.0314    2.6  26.2   95.7   2.5586   4.4    5.4	GRS 1915+105                  
299.5895  35.1959    0.3   0.2  122.8  14.4938  39.8    0.3	Cyg X-1                       
308.0902  40.9500    1.4   8.6  -62.5   2.8327   8.4    0.9	Cyg X-3                       
326.1209  38.2051    7.8  21.2  -34.9   0.5843   1.5    7.4	Cyg X-2                       
248.9468  16.1671    2.4  49.0  151.3   6.6747   4.8 ------	UNKNOWN                       
329.2373  55.9683    2.7  28.8  -74.3   2.4056   4.3 ------	UNKNOWN                       
349.7493  44.8491    2.6  38.8  -49.1   2.7077   4.5 ------	UNKNOWN                       
239.2235  73.2151    2.8  48.0 -129.0   7.9357   4.2 ------	UNKNOWN

Plot creation:
Sat Jul  2 16:12:34 EDT 2016