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-1230 Instrument control development <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>2021-04-07 19:52:44.614Z cmdr 10 CmdrConnection.py:58 read: client.v57.sps 105 ccd_b3 d text="creating fits file /data/raw/2021-04-07/sps/PFLA02450731.fits" 2021-04-07 19:52:44.723Z cmds 20 CommandLink.py:121 &gt; 2 51 w text="failed to write fits file /data/raw/2021-04-07/sps/PFLA02450731.fits: FITSIO status = 402: bad float to string conversion Error in ffd2e: double value is a NaN or INDEF " 2021-04-07 19:52:44.724Z exposure 30 exposure.py:386 failed to write fits file /data/raw/2021-04-07/sps/PFLA02450731.fits: FITSIO status = 402: bad float to string conversion Error in ffd2e: double value is a NaN or INDEF 2021-04-07 19:52:44.728Z cmdr 10 CmdrConnection.py:58 read: client.v57.sps 105 ccd_b3 w text="failed to write fits file /data/raw/2021-04-07/sps/PFLA02450731.fits: FITSIO status = 402: bad float to string conversion" 2021-04-07 19:52:44.729Z cmdr 10 CmdrConnection.py:58 read: .ccd_b3 0 ccd_b3 w RawLine="Error in ffd2e: double value is a NaN or INDEF" 2021-04-07 19:52:44.730Z cmdr 10 CmdrConnection.py:58 read: .ccd_b3 0 ccd_b3 w RawLine="\"" </pre> </div></div> INSTRM-1230

Failure writing FITS file

Task Critical Won't Fix Won't Fix cloomis cloomis Wed, 7 Apr 2021 20:06:57 +0000 Wed, 7 Apr 2021 22:23:28 +0000 Wed, 7 Apr 2021 22:23:28 +0000 ics_ccdActor 0 1 <p>I allowed a NaN to sneak through to the fits header writer:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>(Pdb) p fitsFile.write(im[:1,:1], header=fitsio.FITSHDR(cards[351:352])) *** OSError: FITSIO status = 402: bad float to string conversion Error in ffd2e: double value is a NaN or INDEF (Pdb) p cards[351:352] [{'name': 'W_SHEXDT', 'value': np.nan, 'comment': '[day] Last hexapod move time'}] (Pdb) p fitsio.FITSHDR(cards[351:352]) W_SHEXDT= nan / [day] Last hexapod move time </pre> </div></div> <p><a href="https://pfspipe.ipmu.jp/jira/browse/INSTRM-1231" title="Sanitize FITS headers before sending to fitsio." class="issue-link" data-issue-key="INSTRM-1231">INSTRM-1231</a> will be the fix.</p> <p>The trigger was a real float nan keyword value from the dcb. The fitsio FITSHDR constructor does no validation/sanitization, so a <tt>KEYNAME = nan</tt> FITS card got sent to <tt>fitsio.write()</tt>. That is not valid, since FITS cannot express NaNs in header cards, so the write failed.</p> <p>For <b>right now</b>, the dcb actorkeys definition for the hexapodDate declares that "nan" is the invalid value, so that when the ccdActor retrieves the keyword value an exception gets thrown and the standard 9998. NAOJ-approved invalid float value gets passed to fitsio.</p> <p>And <a href="https://pfspipe.ipmu.jp/jira/browse/INSTRM-1231" title="Sanitize FITS headers before sending to fitsio." class="issue-link" data-issue-key="INSTRM-1231">INSTRM-1231</a> will more generally sanitize FITS card values.</p> Development Rank 0|zzs4vs: