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/INSTRM-2152 Instrument control development <p><a href="https://pfspipe.ipmu.jp/jira/secure/ViewProfile.jspa?name=eric" class="user-hover" rel="eric">eric</a> reported that Gen2 is getting some PFSC images whose data section doesn't match up with the size listed in the header. For expample, these files failed to open:</p> <blockquote><p> 'PFSC10504800.fits',<br/>  'PFSC10504301.fits',<br/>  'PFSC10505801.fits',<br/>  'PFSC10505300.fits',<br/>  'PFSC10500500.fits',<br/>  'PFSC10504500.fits',<br/>  'PFSC10505501.fits',<br/>  'PFSC10507010.fits',<br/>  'PFSC10506900.fits',<br/>  'PFSC10507008.fits'</p></blockquote> <p> </p> <p>Craig and Eric compared checksum for an image:</p> <p> </p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> cloomis@shell-ics:raw$ sha256sum 2024-01-17/mcs/PFSC10507008.fits 51307b99c4c2c5e37407d8fa51419aa100c0c5a761e4613047760ee20ee9953a 2024-01-17/mcs/PFSC10507008.fits </pre> </div></div> <p>vs</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> gen2@g2s2:/gen2/share/data/PFS$ sha256sum PFSC10507008.fits e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855  PFSC10507008.fits</pre> </div></div> INSTRM-2152

Gen2 is receiving some PFSC files with bad data secition

Task Normal Open Unresolved cloomis yuki.moritani EngRun FITS Sat, 20 Jan 2024 03:53:14 +0000 Fri, 2 Feb 2024 16:59:14 +0000 0 3 <p>I suspect <a href="#INSTRM-1425">INSTRM-1425</a> is a possible reason we are receiving bad frames occasionally. Is it now the case that the process writing the file is no longer the one sending the request to transfer it?  (That or possibly <a href="#INSTRM-2105">INSTRM-2105</a> ?)</p> <p>STARS transfer for PFSC frames is already disabled, so this is not a big issue at the moment.</p> <p>Clearly <a href="https://pfspipe.ipmu.jp/jira/browse/INSTRM-1425" title="MCS readout efficiency: write the PFSC files in the background" class="issue-link" data-issue-key="INSTRM-1425"><del>INSTRM-1425</del></a>/<a href="https://pfspipe.ipmu.jp/jira/browse/INSTRM-1385" title="Make MCS readouts more efficient: pipe reads to mcsActor w/o going to disk" class="issue-link" data-issue-key="INSTRM-1385"><del>INSTRM-1385</del></a> is the issue. Chi-Hung and I chatted at some point about using the fancier/more complicated ics_utils fitsWriter module which PFSB are written are written with, which among other things handles exactly this issue. We need to decide whether that is necessary, or the right thing to do.</p> Development Rank 0|zzt0jq:6