batgrbproduct analysis for trigger=1299965

batgrbproduct Analysis for Trigger=1299965

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): Thu Jun 19 21:01:14 EDT 2025
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1299965
======================================================================

  Trigger: 01299965      Segment: 000

  BAT Trigger Time: 765087618.816   [s; MET]
      Trigger Stop: 765087622.912   [s; MET]
               UTC: 2025-03-31T04:19:43.475160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 71.3806240489717   Dec: 43.8047219565363  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.17
     Image Trigger?:     NO
     Rate S/N Ratio:     9.21954445729289  [ if not an image trigger ]
     Image S/N Ratio:    7.17

  Flight Position:   [ source = BAT ]
    RA: 71.3806240489717   Dec: 43.8047219565363  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 71.3766667819925   Dec: 43.7941880079219  [deg; J2000]  
        { 04h 45m 30.4s , +43d 47' 39.1" }
         +/- 2.57381587156507 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.28803598969637 [arcmin] (formal 1-sigma fit error)
    SNR: 7.88096013153049
 
  Angular difference between Flight and Ground position is 0.654858 arcmin
 
  Partial Coding Fraction: 0.5546875    [ including projection effects ]

  Duration
     T90: 3.95200002193451 +/- 0.770631020780319
        Measured from: -0.480000019073486
                   to: 3.47200000286102     [s; relative to TRIGTIME]
     T50: 2.1159999370575 +/- 1.00641339961253
        Measured from: 0.424000024795532
                   to: 2.53999996185303     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.28400003910065     
                   to: 2.28400003910065     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.720000028610229     
                   to: 3.75999999046326     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.166276   0.105481   0.034620  -0.000670
           0.019350   0.019666   0.016735   0.013721 [error]
 Peak      0.037978   0.035040   0.020695   0.004900
           0.009676   0.009597   0.008538   0.006712 [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 5.20e-08 4.93e-08 3.22e-08 3.27e-08 1.47e-07 1.66e-07   erg/cm2
              Error 1.05e-08 1.02e-08 1.32e-08 2.50e-08 3.23e-08 4.63e-08   erg/cm2
Peak flux Power-law 3.76e-01 2.87e-01 1.47e-01 1.08e-01 8.60e-01 9.18e-01   ph/cm2/s
              Error 1.55e-01 8.07e-02 6.49e-02 9.31e-02 2.44e-01 2.58e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.11e-08 5.42e-08 2.52e-08 4.79e-09 1.34e-07 1.35e-07   erg/cm2
              Error 1.10e-08 1.28e-08 1.85e-08 1.58e-08 3.42e-08 4.01e-08   erg/cm2
Peak flux Cutoff-PL 3.73e-01 2.59e-01 1.25e-01 9.89e-02 8.01e-01 8.43e-01   ph/cm2/s
              Error 1.61e-01 1.29e-01 5.75e-02 5.83e-02 3.53e-01 3.92e-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    2.609    0.385    -      -           3.18e-03 9.72e-04   44.420 57
CPL   1.615    0.000      12.9    0.0      1.45e-02 0.00e+00   43.170 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.969    0.539    -      -           5.82e-03 1.99e-03   61.500 57
CPL   2.089    1.840      42.4    0.0      4.98e-03 0.00e+00   61.420 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    4.480   -0.720    3.760
T90     3.952   -0.480    3.472
T50     2.116    0.424    2.540
Peak    1.000    1.284    2.284

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
   71.3767    43.7942   0.0243    39.8255  -179.7953         0.2923851      7.881 TRIG_01299965                 
 
Foreground time interval of the image:
 -0.720   3.760 (delta_t =   4.480 [sec])
Background time interval of the image:
-183.315  -0.720 (delta_t = 182.595 [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   -0.720 sec. to    3.760 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.60915     ( -0.353509   0.415502 )
Norm@50keV  : 3.17530E-03    ( -0.000969468   0.000975246 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   44.42     using 59 bins.
 Reduced chi-squared = 0.779298
# Null hypothesis probability of 8.88e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 4.48 sec: 0.668039 ( -0.114945  0.114992 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.46879e-07 ( -3.14036e-08  3.31279e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.720 sec. to    3.760 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.61494     (     )
Epeak [keV] : 12.8743      (   )
Norm@50keV  : 1.44743E-02    (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.17     using 59 bins.
 Reduced chi-squared = 0.770893
# Null hypothesis probability of 8.95e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 4.48 sec: 0.666490 ( -0.112589  0.117745 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.34499e-07 ( -3.20495e-08  3.63763e-08 ) ergs/cm2

Band function

Time interval is from   -0.720 sec. to    3.760 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]    : 6.22453  (-1.11082  1.38565)
R^2/D10^2   : 2.08059  (-1.19848   2.83902)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   46.48     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.39e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.049e-08   1.908e-08
25- 50  5.449e-08   1.877e-08
50-150  5.787e-09   3.873e-09
15-150  1.108e-07   3.257e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 27.0817       (-9.13894      15.1765)
Norm        : 5.91831       (-1.941     3.31976)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.20     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.12e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.101e-08   1.245e-08
25- 50  5.496e-08   1.602e-08
50-150  2.620e-08   1.542e-08
15-150  1.322e-07   3.494e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.88835        (-1.8141      1.60147)
R1^2/D10^2  : 4.84393        (-2.42667      23.633)
kT2 [keV]   : 15.4353        (-12.3291      27.7107)
R2^2/D10^2  : 2.31680E-02    (-0.0230458   0.63437)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   41.95     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.02e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.333e-08   2.986e-08
25- 50  5.075e-08   2.746e-08
50-150  3.556e-08   2.094e-08
15-150  1.396e-07   7.137e-08

Peak spectrum fit

Power-law model

Time interval is from    1.284 sec. to    2.284 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.96908     ( -0.498715   0.579815 )
Norm@50keV  : 5.81603E-03    ( -0.00207318   0.00191302 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.50     using 59 bins.
 Reduced chi-squared = 1.07895
# Null hypothesis probability of 3.18e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.860292 ( -0.24373  0.243978 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.35673e-08 ( -1.73088e-08  1.77049e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    1.284 sec. to    2.284 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.08929     ( -1.64752   2.03344 )
Epeak [keV] : 42.4012      (   )
Norm@50keV  : 4.97598E-03    (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.42     using 59 bins.
 Reduced chi-squared = 1.09679
# Null hypothesis probability of 2.88e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.801311 ( -0.403496  0.302499 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.51045e-08 ( -2.8004e-08  2.37417e-08 ) ergs/cm2

Band function

Time interval is from    1.284 sec. to    2.284 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]    : 7.72932  (-2.27475  4.32723)
R^2/D10^2   : 1.05224  (-1.0503   3.3334)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.18     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.90e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.107e-08   6.625e-09
25- 50  1.823e-08   1.158e-08
50-150  4.269e-09   3.345e-09
15-150  3.357e-08   2.137e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 77.8929       (-48.4523      -77.954)
Norm        : 4.04294       (-1.49248     3.04516)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   62.37     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.91e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.047e-08   5.264e-09
25- 50  1.713e-08   1.034e-08
50-150  2.374e-08   1.877e-08
15-150  5.134e-08   3.129e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.38594        (-2.16961      2.82973)
R1^2/D10^2  : 2.03595        (-1.59043      8.8107)
kT2 [keV]   : 45.5596        (-33.6823      -45.5593)
R2^2/D10^2  : 1.35136E-03    (-0.0012921   0.024682)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   59.77     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.07e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.233e-08   7.320e-09
25- 50  1.599e-08   1.012e-08
50-150  2.742e-08   1.441e-08
15-150  5.574e-08   2.781e-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: 2.60915     ( -0.353509   0.415502 )
Norm@50keV  : 3.17530E-03    ( -0.000969468   0.000975246 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   44.42     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.88e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 4.48 sec: 0.667933 ( -0.11493  0.114978 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.46841e-07 ( -3.14004e-08  3.31574e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.61050     (     )
Epeak [keV] : 12.9614      (   )
Norm@50keV  : 1.45747E-02    (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.17     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.95e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 4.48 sec: 0.656232 ( -0.113506  0.115794 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.34507e-07 ( -1.70948e-08  3.74963e-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)  = 4.93e-08
S(50-100 keV) = 3.22e-08

T90 vs. Hardness ratio plot

T90                                   = 3.95200002193451 sec.
Hardness ratio (energy fluence ratio) = 0.653144

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.634373
Count Ratio (50-100 keV) / (15-25 keV) = 0.208208

Mask shadow pattern

IMX = -8.339169314008682E-01, IMY = 2.979968450133867E-03

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:
-183.315410 -0.720000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.5805  35.2167    1.9  51.1   17.4   4.5650   6.0    1.0	Cyg X-1                       
308.1137  40.9585  177.1  42.3   16.7  -0.0294  -0.1    0.4	Cyg X-3                       
325.9223  38.3104    0.0  34.0   -1.7   0.6587   1.9   11.8	Cyg X-2                       
100.2066  57.5710    2.4  45.9  147.9   3.9133   4.7 ------	UNKNOWN                       
 90.5631  46.1408    1.9  48.7  165.1   4.7660   6.2 ------	UNKNOWN                       
  4.2315  32.5046    3.4  23.3  -67.3   1.1076   3.4 ------	UNKNOWN                       
321.0747  12.2429    3.7  57.5  -19.0   3.3540   3.1 ------	UNKNOWN

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

Time interval of the image:
-0.720000 3.760000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.5573  35.1615   12.3  51.2   17.4   0.0897   0.9    2.9	Cyg X-1                       
308.2706  41.0468    4.9  42.2   16.6   0.1023   2.3    9.2	Cyg X-3                       
326.0170  38.3791    8.9  33.9   -1.7   0.0394   1.3    8.1	Cyg X-2                       
 71.3767  43.7942    1.5  39.8 -179.8   0.2924   7.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
296.084610 842.255200
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6419  22.0194    0.5  24.0  168.7  21.1353  24.1    0.6	Crab                          
337.8724  76.4143    2.6  48.5   -0.6   5.8096   4.3 ------	UNKNOWN                       
 56.7897  -8.9968    2.9  54.4 -144.5  16.4853   4.0 ------	UNKNOWN

Plot creation:
Fri Jun 20 01:44:19 EDT 2025