https://pfspipe.ipmu.jp/jira This file is an XML representation of an issue en-us 8.3.4 803005 13-09-2019 https://pfspipe.ipmu.jp/jira/browse/PIPE2D-735 DRP 2-D Pipeline <p>sky subtraction algorithm via reduceExposure seems to be off. I believe the offset is one 1 pixel and it happened after <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-714" title="Update extra-pixel correction logic in PfsMapper:std_raw()" class="issue-link" data-issue-key="PIPE2D-714"><del>PIPE2D-714</del></a> was pushed. The dipole in the subtraction shown in the figure is noticeable in all the spots I have looked at. </p> <p>The quality of `reduceArc` is nominally quite good: </p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> reduceArc.fitDetectorMap INFO: Final fit: chi2=2557.440734 dof=2226 xRMS=0.017001 yRMS=0.017363 (0.001489 nm, 0.555814 km/s) from 1141/1336 lines reduceArc.fitDetectorMap INFO: Fit quality from reserved lines: chi2=928.660422 xRMS=0.032308 yRMS=0.019853 (0.001702 nm, 0.635527 km/s) from 148 lines (10.0%) reduceArc.fitDetectorMap INFO: Softening errors by 0.012173 pixels (0.001044 nm, 0.389680 km/s) to yield chi^2/dof=1 reduceArc.fitDetectorMap INFO: Softened fit: chi2=2224.912406 dof=2226 xRMS=0.017772 yRMS=0.018198 (0.001560 nm, 0.582562 km/s) from 1141/1484 lines reduceArc.fitDetectorMap INFO: Softened fit quality from reserved lines: chi2=765.254110 xRMS=0.032082 yRMS=0.019945 (0.001710 nm, 0.638479 km/s) from 148 lines (10.0%)</pre> </div></div> <p>The detrened image I have been looking at is </p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>/projects/HSC/PFS/Subaru/rerun/ncaplar/Feb_11_2021/rerun/ncaplar/detrend/calExp/2020-11-14/v034445/calExp-SA034445r1.fits </pre> </div></div> <p>The 2dsubtracted image is at:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>/projects/HSC/PFS/Subaru/rerun/ncaplar/Feb_11_2021/rerun/ncaplar/calibs/sky2d_improved_dm/calExp/2020-11-14/v034445/calExp-SA034445r1.fits</pre> </div></div> <p> </p> PIPE2D-735

Offset in x direction with 2d subtraction

Task Normal Done Done Unassigned ncaplar Mon, 22 Feb 2021 21:22:13 +0000 Tue, 23 Feb 2021 23:37:16 +0000 Tue, 23 Feb 2021 23:37:16 +0000 0 1 <p>After discussion on Slack, this problem was solved after rerun with the detectorMap that @price updated in <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-726" title="Regenerate detectorMap shifted in spatial direction for SuNSS" class="issue-link" data-issue-key="PIPE2D-726"><del>PIPE2D-726</del></a>.</p> Blocks PIPE2D-490 Development Rank 0|zzs4a8: