| Version 4 (modified by , 16 years ago) ( diff ) |
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The fringe correction for y band is sometimes incorrect. I generated some histograms to see which chips are affected and how bad it is. I selected fringe_0 out of the database for y band images taken between 2010-12-01 and 2011-01-06. The following histogram is generated, with a log scale for the y axis and the x range restricted between 0 and 25. Sometimes fringe_0 was greater than 25, but including these in the histogram is not necessary to find out which chips are having problems with the fringe correction. Also, sometimes fringe_0 is set to NULL, and this occurs throughout the exposure, and these are ignored in the histogram as well. Finally, fringe_0 is always greater than 0 (for the dates I selected).
Some statistics on these:
class_id median mean std dev max % with fringe_0 > 25 XY01 2.14685 2.78547 4.55052 134.874 0.0050847458 XY02 1.90675 2.44930 3.30728 63.0371 0.0045197740 XY03 2.76987 3.16849 1.91553 9.21880 0.0000000 XY04 2.02275 2.33695 2.32076 49.4671 0.0016949153 XY05 3.13525 3.46483 2.04380 34.6189 0.0022598870 XY06 5.86210 10.0423 21.1350 434.895 0.057627119 XY10 0.677878 1.14464 3.08411 82.6363 0.0033898305 XY11 2.57013 6.28285 11.6783 137.289 0.057062147 XY12 3.00225 4.25366 5.80556 66.3143 0.019209040 XY13 1.94048 2.83383 2.43898 9.84651 0.0000000 XY14 2.21751 2.31153 0.993812 7.84043 0.0000000 XY15 2.28722 2.36665 1.18602 14.0283 0.0000000 XY16 2.07397 2.92317 3.16791 58.5429 0.0039548023 XY17 3.55830 3.72393 1.25008 14.7710 0.0000000 XY20 1.34027 1.94968 2.23508 26.3953 0.00056497175 XY21 1.17908 1.56776 1.90712 35.3519 0.0011299435 XY22 1.47172 1.94487 3.64130 77.0823 0.0050847458 XY23 2.04026 3.15016 5.45036 85.0191 0.013559322 XY24 1.54393 1.68979 1.16973 6.29423 0.0000000 XY25 2.59187 2.72328 1.58881 7.82525 0.0000000 XY26 3.04384 3.68780 2.90791 52.1210 0.0016949153 XY27 1.81973 2.02829 0.813432 5.58368 0.0000000 XY30 2.39169 2.61380 1.45733 7.22517 0.0000000 XY31 2.86647 2.88102 1.73739 8.81901 0.0000000 XY32 1.83408 1.94064 1.18047 5.73956 0.0000000 XY33 1.67190 2.28353 4.49014 89.4411 0.0062146893 XY34 3.12894 3.46197 2.33657 11.1898 0.0000000 XY35 1.80555 2.25230 6.50881 254.001 0.0039548023 XY36 2.84232 3.08421 1.42734 8.89238 0.0000000 XY37 0.859465 1.14786 2.13926 54.3340 0.0011299435 XY40 5.47964 6.47672 4.12596 25.5146 0.00056497175 XY41 2.56550 2.83409 1.82204 34.9952 0.00056497175 XY42 2.49680 3.12582 5.62217 160.458 0.0050847458 XY43 2.03507 3.13958 5.58449 93.9078 0.011299435 XY44 1.54408 2.54833 3.12548 42.5154 0.0022598870 XY45 0.761591 1.73194 4.10712 62.5078 0.0079096045 XY46 1.84257 1.90943 0.974248 5.44862 0.0000000 XY47 5.53168 5.39727 1.18334 17.9660 0.0000000 XY50 2.16463 2.30645 1.31419 24.7577 0.0000000 XY51 3.45145 3.55691 1.72335 11.2816 0.0000000 XY52 2.27381 2.58365 1.90288 30.8967 0.0011299435 XY53 2.90160 3.46480 4.14966 90.5600 0.0056497175 XY54 0.984611 2.45462 2.70216 10.0134 0.0000000 XY55 2.38354 2.76181 2.05740 9.75831 0.0000000 XY56 1.81071 2.10362 1.52538 6.46066 0.0000000 XY57 1.67930 2.15787 4.02968 80.3189 0.0062146893 XY60 0.633743 1.08325 2.23260 58.9078 0.00056497175 XY61 1.52215 1.94917 3.28787 77.2115 0.0039548023 XY62 3.02908 3.13417 1.51751 9.64185 0.0000000 XY63 2.90316 3.38848 2.25855 40.3953 0.00056497175 XY64 2.43692 2.48120 0.879243 24.8380 0.0000000 XY65 3.91057 4.07438 1.73766 15.8247 0.0000000 XY66 1.83352 2.09043 2.06863 47.8089 0.0016949153 XY67 0.905146 1.06043 1.30531 29.0253 0.00056497175 XY71 1.27569 1.52650 1.45031 26.5018 0.00056497175 XY72 1.86214 2.16910 2.56055 64.8669 0.0028248588 XY73 6.01751 5.97639 1.87677 14.4008 0.0000000 XY74 2.83021 3.66762 4.25364 91.4215 0.0079096045 XY75 2.66233 2.71831 0.978458 21.3003 0.0000000 XY76 0.918665 0.981566 0.477278 3.72698 0.0000000
An example of an exposure where things explode:
select exp_name, class_id, fringe_0, fringe_1, fringe_2 from rawExp join chipRun using(exp_id) join chipProcessedImfile using (chip_id) where filter = 'y.00000' and exp_name ="o5562g0127o" ; +-------------+----------+----------+----------+----------+ | exp_name | class_id | fringe_0 | fringe_1 | fringe_2 | +-------------+----------+----------+----------+----------+ | o5562g0127o | XY01 | 2.89989 | 1.73069 | 0 | | o5562g0127o | XY02 | 14.56 | 3.56425 | 0 | | o5562g0127o | XY03 | 2.84405 | 0.372487 | 0 | | o5562g0127o | XY04 | 2.19512 | 0.206826 | 0 | | o5562g0127o | XY05 | 3.92425 | 0.603826 | 0 | | o5562g0127o | XY06 | 7.02395 | 4.09365 | 0 | | o5562g0127o | XY10 | 0.968364 | 0.676746 | 0 | | o5562g0127o | XY11 | 6.19634 | 1.9363 | 0 | | o5562g0127o | XY12 | 3.39375 | 0.281118 | 0 | | o5562g0127o | XY13 | 2.23806 | 0.28201 | 0 | | o5562g0127o | XY14 | 3.21626 | 0.466184 | 0 | | o5562g0127o | XY15 | 3.22006 | 0.427613 | 0 | | o5562g0127o | XY16 | 7.3712 | 0.533297 | 0 | | o5562g0127o | XY17 | 4.95411 | 1.24659 | 0 | | o5562g0127o | XY20 | 1.49795 | 0.27659 | 0 | | o5562g0127o | XY21 | 1.96783 | 0.363736 | 0 | | o5562g0127o | XY22 | 2.053 | 0.310085 | 0 | | o5562g0127o | XY23 | 50.7438 | 29.1275 | 0 | | o5562g0127o | XY24 | 1.60155 | 0.061001 | 0 | | o5562g0127o | XY25 | 2.48234 | 0.024439 | 0 | | o5562g0127o | XY26 | 4.41207 | 0.174691 | 0 | | o5562g0127o | XY27 | 2.19813 | 0.556806 | 0 | | o5562g0127o | XY30 | 2.37545 | 0.23392 | 0 | | o5562g0127o | XY31 | 3.12675 | 0.045992 | 0 | | o5562g0127o | XY32 | 2.11341 | 0.353222 | 0 | | o5562g0127o | XY33 | 1.96237 | 0.181551 | 0 | | o5562g0127o | XY34 | 3.43797 | 2.31409 | 0 | | o5562g0127o | XY35 | 1.14019 | 0.260336 | 0 | | o5562g0127o | XY36 | 3.5544 | 0.210973 | 0 | | o5562g0127o | XY37 | 1.43281 | 0.059052 | 0 | | o5562g0127o | XY40 | 8.1172 | 3.78008 | 0 | | o5562g0127o | XY41 | 3.78775 | 0.398204 | 0 | | o5562g0127o | XY42 | 3.1402 | 0.666876 | 0 | | o5562g0127o | XY43 | 2.67856 | 0.111939 | 0 | | o5562g0127o | XY44 | 2.21637 | 0.309348 | 0 | | o5562g0127o | XY45 | 1.66679 | 0.079452 | 0 | | o5562g0127o | XY46 | 1.80905 | 0.060166 | 0 | | o5562g0127o | XY47 | 6.31662 | 1.83607 | 0 | | o5562g0127o | XY50 | 2.89176 | 0.671724 | 0 | | o5562g0127o | XY51 | 2.99941 | 0.296205 | 0 | | o5562g0127o | XY52 | 1.78046 | 1.99846 | 0 | | o5562g0127o | XY53 | 5.4713 | 0.396272 | 0 | | o5562g0127o | XY54 | 7.84851 | 0.787676 | 0 | | o5562g0127o | XY55 | 2.33387 | 0.056494 | 0 | | o5562g0127o | XY56 | 1.03215 | 0.967722 | 0 | | o5562g0127o | XY57 | 1.77904 | 0.182634 | 0 | | o5562g0127o | XY60 | 0.925654 | 0.700109 | 0 | | o5562g0127o | XY61 | 2.52718 | 0.513826 | 0 | | o5562g0127o | XY62 | 5.37332 | 0.317587 | 0 | | o5562g0127o | XY63 | 2.97252 | 0.216043 | 0 | | o5562g0127o | XY64 | 3.26208 | 1.44433 | 0 | | o5562g0127o | XY65 | 4.76977 | 0.224413 | 0 | | o5562g0127o | XY66 | 1.57893 | 0.074323 | 0 | | o5562g0127o | XY67 | 1.55014 | 1.05426 | 0 | | o5562g0127o | XY71 | 1.66548 | 0.751917 | 0 | | o5562g0127o | XY72 | 2.17629 | 0.713648 | 0 | | o5562g0127o | XY73 | 7.34344 | 3.12153 | 0 | | o5562g0127o | XY74 | 8.77662 | 7.10027 | 0 | | o5562g0127o | XY75 | 3.15082 | 1.04803 | 0 | | o5562g0127o | XY76 | 1.44667 | 0.463873 | 0 | +-------------+----------+----------+----------+----------+
In this exposure, XY23 exploded, and does not have a good fit for the fringe.
Attachments (2)
- fringe_histograms3.png (243.6 KB ) - added by 16 years ago.
- cam.o5562g0127o.jpeg (1.3 MB ) - added by 16 years ago.
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