batgrbproduct analysis for trigger=1059460

batgrbproduct Analysis for Trigger=1059460

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 22:54:54 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1059460
======================================================================

  Trigger: 01059460      Segment: 000

  BAT Trigger Time: 647403964.416   [s; MET]
      Trigger Stop: 647403965.44   [s; MET]
               UTC: 2021-07-08T02:25:37.084880    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 173.699151561178   Dec: -49.1867314058096  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.82
     Image Trigger?:     NO
     Rate S/N Ratio:     8.42614977317636  [ if not an image trigger ]
     Image S/N Ratio:    6.82

  Flight Position:   [ source = BAT ]
    RA: 173.699151561178   Dec: -49.1867314058096  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 173.759670081897   Dec: -49.1655101334572  [deg; J2000]  
        { 11h 35m 02.3s , -49d 09' 55.8" }
         +/- 2.14186972714787 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.20709619267709 [arcmin] (formal 1-sigma fit error)
    SNR: 10.2460595633761
 
  Angular difference between Flight and Ground position is 2.693715 arcmin
 
  Partial Coding Fraction: 0.9453125    [ including projection effects ]

  Duration
     T90: 2.77199995517731 +/- 0.700048576666753
        Measured from: -0.48800003528595
                   to: 2.28399991989136     [s; relative to TRIGTIME]
     T50: 1.1399998664856 +/- 0.568014068147241
        Measured from: 0.340000033378601
                   to: 1.4799998998642     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.144000053405762     
                   to: 0.855999946594238     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.687999963760376     
                   to: 2.43999993801117     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.072801   0.113607   0.027765   0.011133
           0.012956   0.013376   0.010784   0.009311 [error]
 Peak      0.028943   0.057250   0.019812   0.006511
           0.007319   0.007720   0.006289   0.005332 [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 2.43e-08 3.19e-08 3.09e-08 5.32e-08 1.05e-07 1.40e-07   erg/cm2
              Error 5.10e-09 5.58e-09 9.11e-09 2.94e-08 2.19e-08 4.13e-08   erg/cm2
Peak flux Power-law 3.41e-01 2.79e-01 1.55e-01 1.26e-01 8.31e-01 9.01e-01   ph/cm2/s
              Error 9.23e-02 5.60e-02 4.69e-02 7.06e-02 1.67e-01 1.85e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.06e-08 4.75e-08 1.32e-08 1.30e-10 8.13e-08 8.13e-08   erg/cm2
              Error 6.11e-09 9.39e-09 1.19e-08 1.75e-09 1.71e-08 1.71e-08   erg/cm2
Peak flux Cutoff-PL 2.50e-01 4.07e-01 1.19e-01 2.60e-03 7.78e-01 7.79e-01   ph/cm2/s
              Error 1.13e-01 1.01e-01 9.67e-02 1.66e-02 1.67e-01 1.67e-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    2.050    0.289    -      -           3.62e-03 8.05e-04   60.530 57
CPL  -2.878    3.751      34.1    5.0      5.13e+00 2.23e+03   47.620 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.852    0.328    -      -           5.91e-03 1.41e-03   81.530 57
CPL  -1.669    3.884      40.9    8.8      7.32e-01 8.87e+02   73.060 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    3.128   -0.688    2.440
T90     2.772   -0.488    2.284
T50     1.140    0.340    1.480
Peak    1.000   -0.144    0.856

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
  173.7597   -49.1655   0.0188    12.9739   129.1905         0.2421616     10.246 TRIG_01059460                 
 
Foreground time interval of the image:
 -0.688   2.440 (delta_t =   3.128 [sec])
Background time interval of the image:
-239.416  -0.688 (delta_t = 238.728 [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   -0.688 sec. to    2.440 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.05009     ( -0.276571   0.301953 )
Norm@50keV  : 3.62410E-03    ( -0.000811058   0.000798302 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.53     using 59 bins.
 Reduced chi-squared = 1.06193
# Null hypothesis probability of 3.50e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 3.128 sec: 0.556551 ( -0.093715  0.093749 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.04859e-07 ( -2.14189e-08  2.22879e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.688 sec. to    2.440 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.87834     ( -5.24446   2.25735 )
Epeak [keV] : 34.1068      ( -4.32279 5.63623 )
Norm@50keV  : 5.12786    ( -4.84372   4453.52 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.62     using 59 bins.
 Reduced chi-squared = 0.850357
# Null hypothesis probability of 7.80e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 3.128 sec: 0.524800 ( -0.091281  0.091813 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.14118e-08 ( -1.58038e-08  1.84333e-08 ) ergs/cm2

Band function

Time interval is from   -0.688 sec. to    2.440 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]    : 8.92530  (-1.19438  1.40144)
R^2/D10^2   : 0.449364  (-0.19727   0.334623)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   48.03     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.96e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.171e-08   5.817e-09
25- 50  4.553e-08   1.051e-08
50-150  1.693e-08   7.471e-09
15-150  8.417e-08   1.885e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 51.3232       (-16.7525      31.9109)
Norm        : 3.21710       (-0.745782     0.993182)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.06     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.48e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.475e-08   5.160e-09
25- 50  3.588e-08   7.665e-09
50-150  3.569e-08   1.839e-08
15-150  9.632e-08   2.638e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.02752        (-25.6037      -25.6037)
R1^2/D10^2  : 0.426060        (-0.000704095      0.77508)
kT2 [keV]   : 0.458953        (-8.66426      1.46362)
R2^2/D10^2  : 2.50286E+11    (-2.71665e+11   6.17899e+18)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.74     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.46e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.198e-08   1.288e-08
25- 50  4.478e-08   3.034e-08
50-150  2.064e-08   2.285e-08
15-150  8.740e-08   6.347e-08

Peak spectrum fit

Power-law model

Time interval is from   -0.144 sec. to    0.856 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.85172     ( -0.313894   0.341741 )
Norm@50keV  : 5.91102E-03    ( -0.00142713   0.00139335 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   81.53     using 59 bins.
 Reduced chi-squared = 1.43035
# Null hypothesis probability of 1.82e-02 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.831487 ( -0.166777  0.166781 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.43526e-08 ( -1.28161e-08  1.32464e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.144 sec. to    0.856 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.66898     ( -5.48049   2.28661 )
Epeak [keV] : 40.8684      ( -6.5207 11.007 )
Norm@50keV  : 0.731618    ( -0.836631   1772.26 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   73.06     using 59 bins.
 Reduced chi-squared = 1.30464
# Null hypothesis probability of 6.25e-02 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.778478 ( -0.166525  0.167851 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.3443e-08 ( -1.03246e-08  1.25843e-08 ) ergs/cm2

Band function

Time interval is from   -0.144 sec. to    0.856 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]    : 10.5005  (-1.66947  2.05178)
R^2/D10^2   : 0.369386  (-0.18404   0.336642)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   73.14     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.36e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.419e-09   2.854e-09
25- 50  2.239e-08   6.400e-09
50-150  1.344e-08   6.394e-09
15-150  4.425e-08   1.376e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 75.2542       (-31.0961      81.5245)
Norm        : 4.11142       (-1.12686     1.31369)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   78.30     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.22e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.062e-08   2.874e-09
25- 50  1.722e-08   5.666e-09
50-150  2.331e-08   1.711e-08
15-150  5.115e-08   2.171e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.00008E-04        (1.92006e-08      -0.000100008)
R1^2/D10^2  : 1.14181E+04        (-11418.1      -11418.1)
kT2 [keV]   : 10.5005        (-1.66945      2.05179)
R2^2/D10^2  : 0.369388    (-0.184042   0.33664)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   73.14     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.14e-02 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.426e-09   3.985e-09
25- 50  2.214e-08   8.813e-09
50-150  1.029e-08   5.301e-09
15-150  4.185e-08   1.343e-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: 2.05009     ( -0.276571   0.301953 )
Norm@50keV  : 3.62410E-03    ( -0.000811058   0.000798302 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.53     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.50e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 3.128 sec: 0.556507 ( -0.0937089  0.0937422 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.04835e-07 ( -2.14112e-08  2.23164e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.88138     ( -5.23859   2.26193 )
Epeak [keV] : 34.1049      ( -4.3194 5.63691 )
Norm@50keV  : 5.15097    ( -4.86003   4454.8 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.62     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.80e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 3.128 sec: 0.524770 ( -0.091281  0.091784 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.14315e-08 ( -1.58058e-08  1.84152e-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)  = 3.19e-08
S(50-100 keV) = 3.09e-08

T90 vs. Hardness ratio plot

T90                                   = 2.77199995517731 sec.
Hardness ratio (energy fluence ratio) = 0.968652

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.56051
Count Ratio (50-100 keV) / (15-25 keV) = 0.381382

Mask shadow pattern

IMX = -1.455828367530893E-01, IMY = -1.785626666599883E-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:
-239.416000 -0.688000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5046 -40.5633    3.1  25.9 -144.1   1.0765   3.7    1.2	Vela X-1                      
170.5635 -60.5271    5.1  23.8  142.1   0.7493   2.3    9.3	Cen X-3                       
186.6492 -62.7317    3.7  28.3  127.1   1.2770   3.1    2.3	GX 301-2                      
217.2284 -16.9220    2.6  47.1   43.2   4.1814   4.5 ------	UNKNOWN

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

Time interval of the image:
-0.688000 2.440000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.7447 -40.6075   25.1  25.7 -144.2   0.0119   0.5   10.3	Vela X-1                      
170.2932 -60.6642    4.0  23.9  142.4   0.0821   2.9    2.6	Cen X-3                       
186.5495 -62.7730   10.6  28.3  127.2  -0.0369  -1.1    2.9	GX 301-2                      
218.2175 -65.8442    1.9  40.7  116.0   0.5468   6.2 ------	UNKNOWN                       
173.7597 -49.1656    1.1  13.0  129.2   0.2422  10.2 ------	UNKNOWN                       
192.3580   9.1146    2.3  51.0   -4.6   0.2740   5.1 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
44.284590 705.184630
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5529 -40.5676    1.4  28.0 -118.8   6.5643   8.6    1.4	Vela X-1                      
170.3476 -60.5912    3.0  11.6  156.1   2.3901   3.8    2.1	Cen X-3                       
186.6957 -62.6488    3.0  15.3  124.8   2.5296   3.9    7.4	GX 301-2                      
218.9898 -23.7180    3.6  43.5   38.9   4.2847   3.2 ------	UNKNOWN                       
152.4072 -58.3189    2.4  15.5 -166.4   3.1822   4.8 ------	UNKNOWN                       
170.7001  -9.4388    2.7  39.8  -36.7   4.5365   4.2 ------	UNKNOWN                       
154.0943  -7.4968    3.9  44.8  -60.2   8.6267   3.0 ------	UNKNOWN

Plot creation:
Sat Jul 30 06:56:42 EDT 2022