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