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-1101 DRP 2-D Pipeline <p>The performance of flux calibration is checked with the observed data taken in the commissioning run in September 2022. I look into the performance of our flux calibration and gain feedback from the result for preparation for the next commissioning run. Due to the adjusting fiber positions and short exposure times for F stars, detailed examinations of the performance and fiber loss are not done for the September 2022 data.</p> PIPE2D-1101

Flux calibration performance for the commissioning run data in September 2022

Task Normal Done Done Takuji Yamashita Takuji Yamashita flux-calibration Fri, 21 Oct 2022 09:07:08 +0000 Fri, 4 Nov 2022 07:23:43 +0000 Fri, 4 Nov 2022 07:23:43 +0000 0 4 <p>The observed data of visit=80842 contains 20 F stars, which are as faint as ~17 mag and distributed across FoV.</p> <p> <span class="image-wrap" style=""><a id="15407_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/15407/15407_pfiCenter_inpfsmerged.png" title="pfiCenter_inpfsmerged.png" file-preview-type="image" file-preview-id="15407" file-preview-title="pfiCenter_inpfsmerged.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/15408/_thumb_15408.png" style="border: 0px solid black" /></a></span> <br/> Broad-band magnitudes of science targets (blue) and F stars (red).  All objects in pfsConfig are shown (including unobserved objects). </p> <p> <span class="image-wrap" style=""><a id="15409_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/15409/15409_pfsMerged_spectra_fluxstd.png" title="pfsMerged_spectra_fluxstd.png" file-preview-type="image" file-preview-id="15409" file-preview-title="pfsMerged_spectra_fluxstd.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/15407/_thumb_15407.png" style="border: 0px solid black" /></a></span> <br/> pfiCenter of fibers. </p> <p>pfsMerged of F stars are shown below. About 6 of them show H-alpha absorption in a low S/N.<br/> <span class="image-wrap" style=""><a id="15410_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/15410/15410_pfsMerged_spectra_fluxstd_aroundHa.png" title="pfsMerged_spectra_fluxstd_aroundHa.png" file-preview-type="image" file-preview-id="15410" file-preview-title="pfsMerged_spectra_fluxstd_aroundHa.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/15409/_thumb_15409.png" style="border: 0px solid black" /></a></span> <br/> <span class="image-wrap" style=""><a id="15421_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/15421/15421_radialvelocity.png" title="radialvelocity.png" file-preview-type="image" file-preview-id="15421" file-preview-title="radialvelocity.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/15410/_thumb_15410.png" style="border: 0px solid black" /></a></span> </p> <p> </p> <p> </p> <p>PDF version of spectra. The P-cygni-like features are fixed. (see <a href="https://sumire-pfs.slack.com/archives/C3AU3VCMU/p1666586416978439" class="external-link" rel="nofollow">https://sumire-pfs.slack.com/archives/C3AU3VCMU/p1666586416978439</a> )</p> <p> </p> <p><span class="nobr"><a href="https://pfspipe.ipmu.jp/jira/secure/attachment/15413/15413_pfsMerged_spectra_fluxst_newd.pdf" title="pfsMerged_spectra_fluxst_newd.pdf attached to PIPE2D-1101">pfsMerged_spectra_fluxst_newd.pdf^{<img class="rendericon" src="https://pfspipe.ipmu.jp/jira/images/icons/link_attachment_7.gif" height="7" width="7" align="absmiddle" alt="" border="0"/>}</a></span></p> <p><span class="nobr"><a href="https://pfspipe.ipmu.jp/jira/secure/attachment/15414/15414_pfsMerged_spectra_fluxstd_aroundHa_new.pdf" title="pfsMerged_spectra_fluxstd_aroundHa_new.pdf attached to PIPE2D-1101">pfsMerged_spectra_fluxstd_aroundHa_new.pdf^{<img class="rendericon" src="https://pfspipe.ipmu.jp/jira/images/icons/link_attachment_7.gif" height="7" width="7" align="absmiddle" alt="" border="0"/>}</a></span></p> <p> </p> <p>Plotting log(I) makes it hard to see what's going on. Could you add the linear plots?</p> <p>How do these look?</p> <p> <span class="nobr"><a href="https://pfspipe.ipmu.jp/jira/secure/attachment/15416/15416_pfsMerged_spectra_fluxstd_new_linear.pdf" title="pfsMerged_spectra_fluxstd_new_linear.pdf attached to PIPE2D-1101">pfsMerged_spectra_fluxstd_new_linear.pdf^{<img class="rendericon" src="https://pfspipe.ipmu.jp/jira/images/icons/link_attachment_7.gif" height="7" width="7" align="absmiddle" alt="" border="0"/>}</a></span> <br/> <span class="nobr"><a href="https://pfspipe.ipmu.jp/jira/secure/attachment/15415/15415_pfsMerged_spectra_fluxstd_aroundHa_new_linear.pdf" title="pfsMerged_spectra_fluxstd_aroundHa_new_linear.pdf attached to PIPE2D-1101">pfsMerged_spectra_fluxstd_aroundHa_new_linear.pdf^{<img class="rendericon" src="https://pfspipe.ipmu.jp/jira/images/icons/link_attachment_7.gif" height="7" width="7" align="absmiddle" alt="" border="0"/>}</a></span> </p> <p>Normalized flux: <span class="nobr"><a href="https://pfspipe.ipmu.jp/jira/secure/attachment/15417/15417_pfsMerged_spectra_fluxstd_new_linear_norm.pdf" title="pfsMerged_spectra_fluxstd_new_linear_norm.pdf attached to PIPE2D-1101">pfsMerged_spectra_fluxstd_new_linear_norm.pdf^{<img class="rendericon" src="https://pfspipe.ipmu.jp/jira/images/icons/link_attachment_7.gif" height="7" width="7" align="absmiddle" alt="" border="0"/>}</a></span></p> <p>I ran that data through the flux calibration codes. The reduction of the actual observed data revealed found some bugs, which Mineo-san is fixing. The radial velocity estimate failed for the default mask setting, and therefore spectral fitting did not go well. Further tests will be done for the data taken in future observations.<br/>  <br/>  <br/> This is NOT a standard way of our flux calibration, but I tried to use the single H alpha line, which is the only detected line. The estimated radial velocities get closer to those measured with Gaussian fitting. I got flux-calibrated spectra, pfsSingle, for 20 FLUXSTDs.<br/>  <br/> <span class="image-wrap" style=""><a id="15423_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/15423/15423_image-2022-11-04-16-14-56-012.png" title="image-2022-11-04-16-14-56-012.png" file-preview-type="image" file-preview-id="15423" file-preview-title="image-2022-11-04-16-14-56-012.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/15421/_thumb_15421.png" style="border: 0px solid black" /></a></span><br/> Fig: Comparison between radial velocities measured in the pipeline and those measured by Gaussian fitting by hand. 6 stars with Halpha detection are plotted. The signals of Halpha are weak, and therefore the differences of 1-2 pix look reasonable. <br/>  <br/> <span class="image-wrap" style=""><a id="15422_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/15422/15422_fitparams.png" title="fitparams.png" file-preview-type="image" file-preview-id="15422" file-preview-title="fitparams.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/15423/_thumb_15423.png" style="border: 0px solid black" /></a></span><br/> Fig: Gaussian fitting of the 6 stars (yellow lines).<br/>  <br/> <span class="image-wrap" style=""><a id="15422_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/15422/15422_fitparams.png" title="fitparams.png" file-preview-type="image" file-preview-id="15422" file-preview-title="fitparams.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/15422/_thumb_15422.png" style="border: 0px solid black" /></a></span><br/> Fig: The best-fit parameters from the stellar typing with the spectra and broad-band SEDs. All 20 stars are plotted. Yellows indicate the 6 stars with Halpha detection. <br/>  <br/>  <br/> <span class="nobr"><a href="https://pfspipe.ipmu.jp/jira/secure/attachment/15424/15424_pfsSingle_fluxstd_ferr.pdf" title="pfsSingle_fluxstd_ferr.pdf attached to PIPE2D-1101">pfsSingle_fluxstd_ferr.pdf^{<img class="rendericon" src="https://pfspipe.ipmu.jp/jira/images/icons/link_attachment_7.gif" height="7" width="7" align="absmiddle" alt="" border="0"/>}</a></span><br/> <span class="nobr"><a href="https://pfspipe.ipmu.jp/jira/secure/attachment/15425/15425_pfsSingle_fluxstd_Ha_ferr.pdf" title="pfsSingle_fluxstd_Ha_ferr.pdf attached to PIPE2D-1101">pfsSingle_fluxstd_Ha_ferr.pdf^{<img class="rendericon" src="https://pfspipe.ipmu.jp/jira/images/icons/link_attachment_7.gif" height="7" width="7" align="absmiddle" alt="" border="0"/>}</a></span><br/> Fig: pfsSingle spectra of 20 FLUXSTDs. Full wavelength range and zoom-in to Halpha. <br/>  </p> <p>From this data reduction, I can get feedback on debugging. More tests will be done for brighter stars in the next commissioning runs. </p> Development Rank 0|zzsv9z: Reviewers hassan