High-quality NEID Solar Observations (January 2021 - June 2022)

<p>NExScI archives all NEID Solar observations at <a href="https://neid.ipac.caltech.edu/search_solar.php">https://neid.ipac.caltech.edu/search_solar.php</a>.&nbsp; NEID takes data even during inclement weather, and the official&nbsp;<a href="https://neid.ipac.caltech.edu/docs/NEID-DRP/index.html">NEID Data Reduction Pipeline</a> does not differentiate between those taken in excellent or poor observing conditions.&nbsp; This CSV file contains a list of all NEID Solar observations from January 1, 2021 to June 13, 2022, identifies which are currently believed to be of high-quality, and provides diagnostic information used (so users can easily adapting the selection criterion for their needs).</p> <p><strong>Columns:</strong></p> <p>filename:&nbsp; Name of file as provided by NExScI</p> <p>bjd:&nbsp;Barycentric Julian Date</p> <p>mask: true for observations considered of high quality; false for observations suspected to be low quality;&nbsp; See selection criterion specified below</p> <p>pyrflux_mean: mean flux observed by pyrheliometer during exposure</p> <p>pyrflux_rms: root mean square deviation from mean of flux observed by&nbsp;pyrheliometer during exposure</p> <p>expmeter_mean: mean of exposure meter during exposure&nbsp;(summed over wavelength channels)</p> <p>expmeter_rms:&nbsp; root mean square deviation from mean of exposure meter during exposure (summed over wavelength channels)</p> <p>airmass:&nbsp; airmass of sun a time of observation</p> <p>hour_angle: hour angle of sun at time of observation</p> <p>driftfun: value of DRIFTFUN copied from FITS header of filename</p> <p>wavecal: value of WAVECAL copied from FITS header of filename</p> <p>expmeter_mean_blue:&nbsp;&nbsp;mean of exposure meter during exposure&nbsp;(summed over bluest third of wavelength channels)</p> <p>expmeter_mean_green:&nbsp;mean of exposure meter during exposure&nbsp;(summed over middle third of wavelength channels)</p> <p>expmeter_mean_red:&nbsp;&nbsp;mean of exposure meter during exposure&nbsp;(summed over reddest third of wavelength channels)</p> <p>&nbsp;</p> <p>Selection criteria for setting mask to true:</p> <p>1.&nbsp; Require E_VER from fits file matches v1.1.* (Data processed with common minor version of NEID DRP)</p> <p>2.&nbsp; Require driftfun&nbsp; == &quot;dailymodel0&quot; and&nbsp;wavecal == &quot;LFCplusThAr&quot;&nbsp; (Wavelength calibration used)</p> <p>3. Start time of exposure lies between 17:30:00 and 22:12:00 (Removes data taken while wavelength calibration is changing rapidly)</p> <p>4. Exclude dates:&nbsp;October 2, 2021 to October 27, 2021 (due to a cabling issue)</p> <p>5.&nbsp; Require airmass &lt;= 2.25&nbsp; (Exclude data taken at high airmass)</p> <p>6.&nbsp; Require mean_pyroflux &gt;= 10^2.95 (Require sufficient&nbsp;flux reaching the pyrheliometer)</p> <p>7.&nbsp; Require expmeter_mean &gt;= 1.0e5&nbsp; (Require sufficient flux reaching&nbsp;the exposure meter)</p> <p>8.&nbsp;&nbsp;Require rms_pyroflux &lt;= 0.0035 * mean_pyroflux&nbsp; &nbsp;(Steady atmospheric transparency)</p> <p>9.&nbsp; Require expmeter_rms &lt;= &nbsp;0.003 * expmeter_mean&nbsp; (Steady transparency &amp; pointing)</p> <p>10. Require expmeter_mean &gt;= 150 * pyrflux_mean&nbsp; (Good pointing)</p> <p>11. Exclude dates:&nbsp;June 6, 2021, June 16, 2021, July 7, 2021, July 18, 2021, and July 19, 2021 (Dates with poor wavelength calibrations.&nbsp; This list may be updated upon further analysis.)</p>