This directory lists gzipped-tar files containing all the lightcurves in ZTF DR4.

Details on file content and format are documented in:
https://www.ztf.caltech.edu/page/dr4#12c

There are 1029 files in total, partitioned according to ZTF Survey Field.
Each filename encodes the RA,Dec span of objects contained in each file.

Total compressed volume: ~ 2.0 TB.

Total uncompressed volume: ~ 9.7 TB.

Lightcurve statistics in g-filter:
Number of lightcurves with >= 1  epoch : 1,130,129,239 
Number of lightcurves with >= 2  epochs: 935,173,342 
Number of lightcurves with >= 5  epochs: 777,837,837 
Number of lightcurves with >= 10 epochs: 652,970,013 
Number of lightcurves with >= 20 epochs: 492,664,548

Lightcurve statistics in r-filter:
Number of lightcurves with >= 1  epoch : 1,869,471,288
Number of lightcurves with >= 2  epochs: 1,602,146,112
Number of lightcurves with >= 5  epochs: 1,367,437,169
Number of lightcurves with >= 10 epochs: 1,200,623,178
Number of lightcurves with >= 20 epochs: 998,686,568

Lightcurve statistics in i-filter:
Number of lightcurves with >= 1  epoch : 231,760,229
Number of lightcurves with >= 2  epochs: 168,246,778
Number of lightcurves with >= 5  epochs: 115,370,894
Number of lightcurves with >= 10 epochs: 91,981,800
Number of lightcurves with >= 20 epochs: 57,062,399

--
Last modified: 2020 Nov 02