This year, I’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’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.
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’t aware of that initially, resulting in whatever this disappointment is:
Normally, one would expect a bump around the 100-110 h-1 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.
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