| --- |
| dataset_info: |
| features: |
| - name: sourceid |
| dtype: int64 |
| - name: bands_data |
| struct: |
| - name: g |
| struct: |
| - name: feat_dynamic_real |
| sequence: float64 |
| - name: length |
| dtype: int64 |
| - name: mjd |
| sequence: float64 |
| - name: past_feat_dynamic_real |
| sequence: float64 |
| - name: target |
| sequence: float64 |
| - name: i |
| struct: |
| - name: feat_dynamic_real |
| sequence: float64 |
| - name: length |
| dtype: int64 |
| - name: mjd |
| sequence: float64 |
| - name: past_feat_dynamic_real |
| sequence: float64 |
| - name: target |
| sequence: float64 |
| - name: r |
| struct: |
| - name: feat_dynamic_real |
| sequence: float64 |
| - name: length |
| dtype: int64 |
| - name: mjd |
| sequence: float64 |
| - name: past_feat_dynamic_real |
| sequence: float64 |
| - name: target |
| sequence: float64 |
| - name: item_id |
| dtype: string |
| - name: start |
| dtype: timestamp[us] |
| - name: freq |
| dtype: string |
| - name: period |
| dtype: float64 |
| - name: objid |
| dtype: string |
| - name: csdr1_id |
| dtype: string |
| - name: class_str |
| dtype: string |
| splits: |
| - name: train |
| num_bytes: 875673046 |
| num_examples: 29047 |
| - name: validation |
| num_bytes: 125938558 |
| num_examples: 4150 |
| - name: test |
| num_bytes: 247823007 |
| num_examples: 8301 |
| download_size: 589501093 |
| dataset_size: 1249434611 |
| configs: |
| - config_name: default |
| data_files: |
| - split: train |
| path: data/train-* |
| - split: validation |
| path: data/validation-* |
| - split: test |
| path: data/test-* |
| --- |
| |
| # Light Curve Train/Val/Test Dataset (EW, EA,RRab,RRc,RS CVn,LPV) and Embedding Data README |
|
|
| This README explains the the CSDR1 light-curve dataset, the embeddings dataset in HF format and the information about each columnn. |
|
|
| --- |
| ## 1. Raw light curve |
|
|
| The 40k expert-labeled ZTF multi-band light curves dataset is at `StarEmbed/data`. |
|
|
| The OOD source light curve is located at `StarEmbed/csdr1_minority_ztf_raw_light_curve`. |
|
|
| The macho light curve for Astromer-1 analysis is located at `StarEmbed/macho_raw_light_curve`. |
| |
| ## 2. Data path mapping |
|
|
| Please use the embeddings located below `StarEmbed/embeddings_with_anom`. |
| The name of the embeddings in the python and bash script should be the same as shown under `StarEmbed/embeddings_with_anom`. |
|
|
| Some exception below: |
|
|
| --- |
|
|
| | Hugging Face folder | Corresponding disk path (basename only) | |
| |--------------------------------|--------------------------------------------------------------------------------| |
| | embs_random_trn_val_tst_bandgr | random | |
| |
| --- |
| |
| ## 3. Available columns |
| |
| Each embeddings in `StarEmbed/embeddings_with_anom` has the following fields: |
| |
| | Column | Type | Description | |
| | ------------------------ | -------------- | ------------------------------------------------------------------------- | |
| | `sourceid` | string | ps1_pbjid, object ID cross matched to another ZTF-like observatory (PS1 = Pan-STARRS1) | |
| | `start` (not useful) | pandas.Timestamp | date of first observation | |
| | `freq` (not useful) | string | sampling frequency (e.g. "1D" for daily) | |
| | `target` (Raw Light curve) | list of floats | magnitude, measure of brightness (AB system)| |
| | `past_feat_dynamic_real` | list of lists | mag_err, 1 sigma uncertainty on magnitude| |
| | `feat_dynamic_real` | list of lists | delta_t (the time gap between each two consecutive time steps)| |
| | `length` | int64 | length of the light curve | |
| | `period` | float | catalog period of the variable star | |
| | `ps1_objid` | string | Pan-STARRS1 object identifier | |
| | `mjd` | list of floats | time step in Modified Julian Date, aligned with `target` | |
| | `class_str` | str | class label (one of 1,2,4,5,6,8,13) | |
| | `csdr1_id` | string | Catalina CSS identifier | |
| | `embeddings_g` | | embedding of each time step of g band | |
| | `embeddings_r` | | embedding of each time step of r band | |
|
|
| --- |
|
|
| ### **Citation** |
| Our dataset is curated from ZTF survey and The Catalina Surveys Periodic Variable Star Catalog, which we cite their works below. |
| ``` |
| @article{bellm2018zwicky, |
| title={The Zwicky Transient Facility: system overview, performance, and first results}, |
| author={Bellm, Eric C and Kulkarni, Shrinivas R and Graham, Matthew J and Dekany, Richard and Smith, Roger M and Riddle, Reed and Masci, Frank J and Helou, George and Prince, Thomas A and Adams, Scott M and others}, |
| journal={Publications of the Astronomical Society of the Pacific}, |
| volume={131}, |
| number={995}, |
| pages={018002}, |
| year={2018}, |
| publisher={IOP Publishing} |
| } |
| |
| @article{drake2014catalina, |
| title={The catalina surveys periodic variable star catalog}, |
| author={Drake, AJ and Graham, MJ and Djorgovski, SG and Catelan, M and Mahabal, AA and Torrealba, G and Garc{\'\i}a-{\'A}lvarez, D and Donalek, C and Prieto, JL and Williams, R and others}, |
| journal={The Astrophysical Journal Supplement Series}, |
| volume={213}, |
| number={1}, |
| pages={9}, |
| year={2014}, |
| publisher={IOP Publishing} |
| }025} |
| } |
| ``` |
