After processing and cleaning up all data from DR1, it was found that residual radiation was still present in some parts of the sky. In most cases, the reasons for this are the light leak or coronal mass ejections (CMEs). However, there are also artifacts that cannot be assigned to any of these causes.
The table below summarises the periods when eRASS1 data is affected by artefacts which could not be removed during the data processing. The numbers correspond to the numbers used here.
| Number | Start of artefact [UTC] | End of artefact [UTC] | Energy range [keV] | root cause |
|---|---|---|---|---|
| #3 | 2020-06-10 00:21:31 | 2020-06-11 08:21:31 | all bands | feature is also seen at the start of eRASS2 therefore there might be an issue with the exposure maps, all TMs |
| #2a | 2020-02-09 07:49:59 | 2020-02-10 11:51:50 | all bands | higher density in solar wind (?), all TMs |
| #2 | 2020-02-17 08:59:551 | 2020-02-17 16:59:551 | all bands | higher density in solar wind (?), density model, all TMs |
| #1, #1a | 2020-02-19 04:59:551 | 2020-02-19 16:59:551 | all bands | CME, all TMs |
| #1, #1a | 2020-02-19 16:59:551 | 2020-02-20 00:59:551 | all bands | weak CME, all TMs |
| 2020-02-19 20:59:551 | 2020-02-20 00:59:551 | <300 | light leak TM 7 | |
| 2020-02-24 08:59:551 | 2020-02-25 00:59:551 | <300 | light leak TM 7 |
1Times are only given to the full eRODAY