{"id":115,"date":"2025-12-21T19:55:00","date_gmt":"2025-12-21T23:55:00","guid":{"rendered":"https:\/\/galaxyexplorer.org\/blog\/?p=115"},"modified":"2026-01-22T02:55:58","modified_gmt":"2026-01-22T06:55:58","slug":"desi-dr1-roadblocks","status":"publish","type":"post","link":"https:\/\/galaxyexplorer.org\/blog\/?p=115","title":{"rendered":"DESI DR1 &#8211; Roadblocks"},"content":{"rendered":"\n<p>This year, I&#8217;ve decided to take on the challenge of wrangling with Dark Energy Spectroscopic Instrument data again. This time, instead of the Early Data Release, which contains pruned and polished data, I&#8217;m using the full Data Release 1 which was released in April of 2025, just a month before I presented my EDR results at the National Junior Science and Humanities Symposium.<\/p>\n\n\n\n<p>The main difference between the EDR and DR1 is the amount of data available, where I now have nearly 10 times as much data to work with. However, this data is unfiltered and thus many of the datapoints contain missing values or are otherwise unusable. I wasn&#8217;t aware of that initially, resulting in whatever this disappointment is:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"672\" height=\"519\" src=\"https:\/\/galaxyexplorer.org\/blog\/wp-content\/uploads\/2026\/01\/Screenshot-2025-12-12-032914.png\" alt=\"\" class=\"wp-image-116\" srcset=\"https:\/\/galaxyexplorer.org\/blog\/wp-content\/uploads\/2026\/01\/Screenshot-2025-12-12-032914.png 672w, https:\/\/galaxyexplorer.org\/blog\/wp-content\/uploads\/2026\/01\/Screenshot-2025-12-12-032914-300x232.png 300w\" sizes=\"auto, (max-width: 672px) 100vw, 672px\" \/><\/figure>\n\n\n\n<p>Normally, one would expect a bump around the 100-110 h<sup>-1<\/sup> Mpc range, but as you can see above, nothing is there. I realized that the data I was using was unfiltered and thus thousands of bad datapoints were causing problems with the correlation function estimator. I plan on doing a re-run with data that does not have missing values.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This year, I&#8217;ve decided to take on the challenge of wrangling with Dark Energy Spectroscopic Instrument data again. This time, instead of the Early Data Release, which contains pruned and polished data, I&#8217;m using the full Data Release 1 which was released in April of 2025, just a month before I presented my EDR results [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-115","post","type-post","status-publish","format-standard","hentry","category-astronomy"],"_links":{"self":[{"href":"https:\/\/galaxyexplorer.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/galaxyexplorer.org\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/galaxyexplorer.org\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/galaxyexplorer.org\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/galaxyexplorer.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=115"}],"version-history":[{"count":1,"href":"https:\/\/galaxyexplorer.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/115\/revisions"}],"predecessor-version":[{"id":117,"href":"https:\/\/galaxyexplorer.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/115\/revisions\/117"}],"wp:attachment":[{"href":"https:\/\/galaxyexplorer.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=115"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/galaxyexplorer.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=115"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/galaxyexplorer.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}