batgrbproduct analysis for trigger=1046014

batgrbproduct Analysis for Trigger=1046014

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 v2.48
    Process Start Time (local time): Fri Jul 29 23:24:22 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1046014
======================================================================

  Trigger: 01046014      Segment: 000

  BAT Trigger Time: 641472156.8   [s; MET]
      Trigger Stop: 641472160.896   [s; MET]
               UTC: 2021-04-30T10:42:09.864820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 57.1977339845647   Dec: 45.074287242736  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.71
     Image Trigger?:     NO
     Rate S/N Ratio:     10.0498756211209  [ if not an image trigger ]
     Image S/N Ratio:    8.71

  Flight Position:   [ source = BAT ]
    RA: 57.1977339845647   Dec: 45.074287242736  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 57.1849876529012   Dec: 45.0796454358532  [deg; J2000]  
        { 03h 48m 44.4s , +45d 04' 46.7" }
         +/- 1.70247036983487 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.864925581268913 [arcmin] (formal 1-sigma fit error)
    SNR: 14.2234424487545
 
  Angular difference between Flight and Ground position is 0.628502 arcmin
 
  Partial Coding Fraction: 0.25    [ including projection effects ]

  Duration
     T90: 13.9319999217987 +/- 2.81434398237871
        Measured from: -1.69199991226196
                   to: 12.2400000095367     [s; relative to TRIGTIME]
     T50: 6.60399985313416 +/- 1.39216662433767
        Measured from: 1.40000009536743
                   to: 8.00399994850159     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.14000010490417     
                   to: 2.14000010490417     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.71999990940094     
                   to: 14.5960000753403     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.602870   0.737917   0.296042   0.072816
           0.064432   0.066154   0.056308   0.048890 [error]
 Peak      0.076687   0.075864   0.057730   0.015058
           0.016202   0.016939   0.015242   0.011833 [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 2.46e-07 3.07e-07 2.79e-07 4.42e-07 9.82e-07 1.27e-06   erg/cm2
              Error 3.77e-08 3.41e-08 5.44e-08 1.68e-07 1.26e-07 2.32e-07   erg/cm2
Peak flux Power-law 7.63e-01 6.34e-01 3.57e-01 2.98e-01 1.89e+00 2.05e+00   ph/cm2/s
              Error 2.67e-01 1.49e-01 1.19e-01 1.92e-01 4.46e-01 4.80e-01   ph/cm2/s
 
Fluence   Cutoff-PL -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux Cutoff-PL 7.18e-01 6.70e-01 3.70e-01 1.78e-01 1.86e+00 1.94e+00   ph/cm2/s
              Error 3.03e-01 2.74e-01 1.33e-01 1.66e-01 4.51e-01 5.15e-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    2.136    0.210    -      -           6.08e-03 8.66e-04   75.860 57
CPL   1.238    1.005      34.7   22.0      2.03e-02 6.01e-02   73.360 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.826    0.406    -      -           1.35e-02 3.54e-03   49.640 57
CPL   1.367    1.405      65.1   -5.4      2.39e-02 1.37e-01   49.330 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: 8.832000 sec.
T50 in the 50-300 keV band: 6.272000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   17.316   -2.720   14.596
T90    13.932   -1.692   12.240
T50     6.604    1.400    8.004
Peak    1.000    1.140    2.140

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
   57.1850    45.0796   0.0135    43.2889   -43.9085         1.7572994     14.223 TRIG_01046014                 
 
Foreground time interval of the image:
 -2.720  14.596 (delta_t =  17.316 [sec])
Background time interval of the image:
-239.800  -2.720 (delta_t = 237.080 [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

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)

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   -2.720 sec. to   14.596 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.13577     ( -0.202319   0.216718 )
Norm@50keV  : 6.08207E-03    ( -0.000877248   0.000855618 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   75.86     using 59 bins.
 Reduced chi-squared = 1.33088
# Null hypothesis probability of 4.82e-02 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 17.32 sec: 0.974201 ( -0.107926  0.107999 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.82602e-07 ( -1.25311e-07  1.27462e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -2.720 sec. to   14.596 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23766     ( -1.29545   0.7147 )
Epeak [keV] : 34.6986      ( -30.2825 13.673 )
Norm@50keV  : 2.03189E-02    ( -0.0203321   0.099852 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   73.36     using 59 bins.
 Reduced chi-squared = 1.31
# Null hypothesis probability of 5.97e-02 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 17.32 sec: 0.943504 ( -0.113412  0.112946 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Band function

Time interval is from   -2.720 sec. to   14.596 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]    : 9.41518  (-1.07864  1.20812)
R^2/D10^2   : 0.569705  (-0.216084   0.350195)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   82.90     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.41e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.740e-07   3.140e-08
25- 50  3.963e-07   6.019e-08
50-150  1.733e-07   5.318e-08
15-150  7.436e-07   1.033e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 53.5352       (-13.772      21.8016)
Norm        : 5.33639       (-0.933319     1.20743)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   73.35     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.12e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.293e-07   3.265e-08
25- 50  3.373e-07   4.261e-08
50-150  3.487e-07   1.020e-07
15-150  9.153e-07   1.347e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.43068        (-6.72557      1.84092)
R1^2/D10^2  : 1.19298        (-0.623973      0.896979)
kT2 [keV]   : 25.4088        (-24.9429      -25.6616)
R2^2/D10^2  : 5.74010E-03    (-0.00547235   0.54473)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   74.34     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.22e-02 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.052e-07   6.640e-08
25- 50  3.610e-07   1.315e-07
50-150  3.629e-07   2.007e-07
15-150  9.291e-07   3.638e-07

Peak spectrum fit

Power-law model

Time interval is from    1.140 sec. to    2.140 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.82624     ( -0.387163   0.424705 )
Norm@50keV  : 1.35457E-02    ( -0.00361252   0.00347684 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.64     using 59 bins.
 Reduced chi-squared = 0.870877
# Null hypothesis probability of 7.45e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.88600 ( -0.44534  0.44601 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.24626e-07 ( -3.26171e-08  3.32187e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    1.140 sec. to    2.140 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.36690     ( -1.95229   0.858121 )
Epeak [keV] : 65.0526      ( -54.3238 -65.0527 )
Norm@50keV  : 2.39278E-02    ( -0.0239279   0.249586 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.33     using 59 bins.
 Reduced chi-squared = 0.880893
# Null hypothesis probability of 7.24e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.86449 ( -0.45187  0.45111 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Band function

Time interval is from    1.140 sec. to    2.140 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]    : 12.1619  (-3.17923  4.19324)
R^2/D10^2   : 0.436900  (-0.292599   0.899623)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.07     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.86e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.368e-08   7.330e-09
25- 50  4.374e-08   1.960e-08
50-150  3.924e-08   2.423e-08
15-150  9.666e-08   4.204e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.2813       (-51.8443      -99.2813)
Norm        : 8.40586       (-2.37392     3.42757)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.34     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.55e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.197e-08   9.387e-09
25- 50  3.793e-08   2.185e-08
50-150  6.122e-08   4.722e-08
15-150  1.211e-07   6.715e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.00467        (-2.70532      6.07898)
R1^2/D10^2  : 7.68299        (-7.15534      306.609)
kT2 [keV]   : 18.8742        (-7.04862      76.2898)
R2^2/D10^2  : 6.78907E-02    (-0.0673178   0.368878)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.24     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.93e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.352e-08   1.406e-08
25- 50  3.509e-08   1.852e-08
50-150  6.014e-08   3.682e-08
15-150  1.188e-07   6.420e-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: 2.13577     ( -0.202319   0.216718 )
Norm@50keV  : 6.08207E-03    ( -0.000877248   0.000855618 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   75.86     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.82e-02 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 17.32 sec: 0.974102 ( -0.107903  0.107997 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.82404e-07 ( -1.25253e-07  1.27501e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23750     ( -1.29539   0.714774 )
Epeak [keV] : 34.6994      ( -25.741 13.6806 )
Norm@50keV  : 2.03233E-02    ( -0.0203324   0.0998518 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   73.36     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.97e-02 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 17.32 sec: 0.943299 ( -0.113362  0.112891 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.08935e-07 ( -1.39866e-07  1.4889e-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)  = 3.07e-07
S(50-100 keV) = 2.79e-07

T90 vs. Hardness ratio plot

T90                                   = 13.9319999217987 sec.
Hardness ratio (energy fluence ratio) = 0.908795

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.22401
Count Ratio (50-100 keV) / (15-25 keV) = 0.491054

Mask shadow pattern

IMX = 6.786525965272134E-01, IMY = 6.532748814989496E-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:
-239.800000 -2.720000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6310  22.0200    0.4  20.1  -88.5   9.4840  29.9    0.4	Crab                          
136.4962  64.5692    3.1  44.2   24.8   2.1012   3.7 ------	UNKNOWN                       
117.3044 -30.4425    2.7  56.8  173.9   7.3733   4.3 ------	UNKNOWN                       
 99.7653  50.4001    3.4  25.5   -2.1   1.0129   3.4 ------	UNKNOWN                       
 54.7986  51.2614    2.3  46.2  -35.8   3.3148   5.1 ------	UNKNOWN

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

Time interval of the image:
-2.720000 14.596000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.5161  21.8394    0.0  20.3  -88.9  -0.0728  -1.1   12.4	Crab                          
 83.8631  -2.6838    2.7  34.8 -134.0   0.3405   4.2 ------	UNKNOWN                       
 57.1850  45.0797    0.8  43.3  -43.9   1.7577  14.2 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
255.100600 650.387900
660.200000 710.857600
720.200000 776.160000
780.200000 962.221600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
180.0139   7.5062    2.6  40.7   96.4   8.7519   4.4 ------	UNKNOWN                       
215.2017  44.4250    2.9  52.2   29.9  10.0752   4.0 ------	UNKNOWN                       
250.8866  83.8877    2.7  57.3  -20.2   9.4792   4.3 ------	UNKNOWN                       
122.2258  76.3084    2.2  43.4  -35.5   5.1234   5.2 ------	UNKNOWN                       
 98.1458  14.6170    2.4  47.9 -129.2  11.3471   4.8 ------	UNKNOWN

Plot creation:
Sat Jul 30 07:03:17 EDT 2022