# uvot_fluxes_wget.pl vrs. 2023-03-23 fem at 231231d04h50m24s320156usUT
# /Home/eud/uvot_tdrss/perl/uvot_fluxes_wget.pl -seq=00021638002 -use_uvot -rebin -plot_mag -sens_corr -search_src_reg -wrk_dir=/data/uvot/swift_data/home/uvot_lc -web -useprev -zp_2011 -gamma=1.0 -use_filter_wtd=white v b u
# Current directory: /data/uvot/swift_data/home/uvot_lc
# ========= GRB231220A ===================
Could not find/read custom source region custom_021638_src.reg
Used archived BAT position of 27.32100 77.89700
Reference: GCN_Circ-35409
The position is (01:49:17.04, +77:53:49.2)
Using source region:
# Region file format: DS9 version 3.0
# uvot_fluxes.pl bat
global font="helvetica 12 bold" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source=1
fk5;circle(27.321,+77.897,3") # color=red dash=0
Source region spec. is: 27.321 +77.897 3"
Region file centered at (27.321,+77.897), which is (01:49:17.04, +77:53:49.2)
Could not find/read custom background region custom_021638_bkg.reg
Made source region file with 5" aper with name uvot_flux_src5.reg
Coincidence losses are calculated using a 5" aperture.
Exposure times (t_exp) have NOT been corrected for coinc. loss, but rates and mags have been.
The no. of background pixels has been corrected by the ratio of coincidence loss corrections in the source and background regions.
The errors have been adjusted to account for the binomial distribution of counts at large rates.
A table entry starting with # is an exposure with no aspect solution.
A table entry starting with ! has no pixels in either source or background region.
A table entry starting with % is unreliable because it is not well inside the image.
Upper limits in tables give the 0.9987 confidence limit using Bayesian analysis for detection taking the observed counts into account.
Upper limits in plots give the 0.9772 confidence limit using Bayesian analysis.
Weighted rates in tables (wtd_rate) combine rates from different exposures weighted by the expected source rate divided by the background rate
The source is assumed to produce the same magnitude in all filters.
The source is assumed to decay as t**(-1.0), and the rate is normalized so that the white filter produces 1 cps at 1000 sec.
The Rebinned Data for All_files combine rates from different exposures weighted by the expected rate divided by the observed sigma squared.
A plot of these data is stored in uvot_fluxes_wtd_date.ps and .gif.
A zero point of 20.29 is adopted for weighting rates.
*** Since no accurate position is available, set rates to 0. and compute ULs based on expected background in source aperture.
Because there are many possible positions for a source, the confidence levels should be increased for upper limits.
Using the ratio of the BAT region and the aperture of 10000.0,
3 sigma should become about 5.3 sigma and 2 sigma should become about 4.7 sigma.
Accordingly confidence limits in the tables have been adjusted from 0.9987 to 0.99999987.
No adjustment has been made for the confidence limits for the rebinned data or the plots.
Subtract UTCF of -32.57634 from uncorrected trigger time of 724781417.4 in BAT summary file
# ============ Reading file sw00021638001uwh_sk.img ================
Long-term sensitivity correction to zero point is -0.175 at 724808395
The processing date in extension 0 is: 2023-12-21T13:41:45
The trigger time is: 724781449.97634. The reference is BAT GRB summary file
Using zero point of 20.115 for filter WHITE
Use aperture correction of 1.108 based on aperture of 3.00
Using background region based on sources found in extension 2:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(27.321,+77.897,25")
fk5;-circle(27.321,+77.897,12.5")
fk5;-circle(27.289338,77.892887,6")
fk5;-circle(27.292067,77.900668,6")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
1 wh724808395I 26945.5 0.97 191.7 267.5 112 14710 5608 0.000 0.103 99.00 20.8 0.0000 0.1027 99.00 20.8 192 0.000 3.264 99.00 0.020
2 wh724808593I 27143.2 0.97 1296.3 1911.4 116 98843 5584 0.000 0.040 99.00 21.8 0.0000 0.0374 99.00 21.9 1488 0.000 1.217 99.00 0.019
3 wh724819829I 38379.3 0.97 188.7 284.4 112 15145 5584 0.000 0.106 99.00 20.7 0.0000 0.0353 99.00 21.9 1677 0.000 1.180 99.00 0.018
4 wh724820024I 38574.1 0.97 956.2 1625.1 128 72047 5612 0.000 0.049 99.00 21.6 0.0000 0.0286 99.00 22.2 2633 0.000 1.044 99.00 0.016
Sum (T+ 26945 to 39546): 4294.1 4294.1 (est. in src region) SNR_unwtd_sum: 0.00 0.99999987 signif. UL: 22.17
0 2633 724814050 32600.2 6945.4 -5654.7 0.0000 0.0286 99.000 99.000 -99.000
Total wtd_rate (for all exposures so far): 0.000 +/- 1.033 snr: 0.0 mag: 99.00 UL: 18.27
# ============ Reading file sw00021638002uwh_sk.img ================
Use keyword TRIGTIME of 724781449.803 for trigger time.
Long-term sensitivity correction to zero point is -0.175 at 724838991
The processing date in extension 0 is: 2023-12-31T04:44:05
The trigger time is: 724781449.803. The reference is keyword in image file
Using zero point of 20.115 for filter WHITE
Use aperture correction of 1.108 based on aperture of 3.00
Using background region based on sources found in extension 2:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(27.321,+77.897,25")
fk5;-circle(27.321,+77.897,12.5")
fk5;-circle(27.289080,77.892951,6")
fk5;-circle(27.291983,77.900776,6")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
1 wh724838990I 57540.9 0.97 13.6 18.9 116 1021 5584 0.000 0.390 99.00 19.3 0.0000 0.3905 99.00 19.3 14 0.000 26.405 99.00 0.009
2 wh724839007I 57557.3 0.97 111.7 148.8 112 8122 5592 0.000 0.131 99.00 20.5 0.0000 0.1242 99.00 20.6 125 0.000 8.407 99.00 0.010
Sum (T+ 57541 to 57671): 183.9 183.9 (est. in src region) SNR_unwtd_sum: 0.00 0.99999987 signif. UL: 20.57
0 125 724839057 57606.9 63.9 -66.0 0.0000 0.1242 99.000 99.000 -99.000
Total wtd_rate (for all exposures so far): 0.000 +/- 1.025 snr: 0.0 mag: 99.00 UL: 18.28
Rebinned Data for sw00021638002uwh_sk.img using a zero point of 20.115:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 2.56e+03 32599.8 6945.8 -5654.4 0.0000 0.0286 99.00 99.00 32599.8 0.0000 0.0286 99.00 99.00 22.71
1 122 57606.9 63.9 -66.0 0.0000 0.1242 99.00 99.00 33736.5 0.0000 0.0279 99.00 99.00 22.73
The data range from T+26945.5 s (0.31 d) to T+57670.8 s (0.67 d)
Wrote uvot_fluxes_231231d04h50m24s320156usUT.qdp
Wrote uvot_fluxes_231231d04h50m24s320156usUT.gif
Wrote uvot_fluxes_231231d04h50m24s320156usUT.ps
Wrote uvot_fluxes_231231d04h50m24s320156usUT_vis.qdp
Wrote uvot_fluxes_231231d04h50m24s320156usUT_uv.qdp
Wrote uvot_fluxes_231231d04h50m24s320156usUT_vis.gif
Wrote uvot_fluxes_231231d04h50m24s320156usUT_vis.ps
# ================ Make Light Curve for Weighted Filters ==========
Use the following filters with indicated color corrections (mags):
v (0) , u (0) , white (0) , b (0) ,
Rebinned Data for All_files using a zero point of 20.290:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 0.793 31086.8 26584.0 -4141.4 0.0000 0.0333 99.00 99.00 31086.8 0.0000 0.0333 99.00 99.00 22.71
The data range from T+26945.5 s (0.31 d) to T+57670.8 s (0.67 d)
Wrote uvot_fluxes_wtd_231231d04h50m24s320156usUT.qdp
Wrote uvot_fluxes_wtd_231231d04h50m24s320156usUT.gif
Wrote uvot_fluxes_wtd_231231d04h50m24s320156usUT.ps
Normal end of uvot_fluxes_wget.pl vrs. 2023-03-23 fem