# CHANGELOG
All changes to the Metis L1 pipeline are documented in this file.

## 2.2 – 2020-11-25
- Change the way how the house-keeping parameters are saved into the FITS binary table, in order to prevent very long computation times when the house-keeping parameter table is large in data volume.
- Modify the decode_obt.pro routine to fix a bug that caused the OBT_BEG and OBT_END keyword values to be converted from double to long.
- Optimise some keyword description texts in the FITS header.
- Add the make_bin_table.pro routine.
- Remove the strreplace.pro routine.

## 2.1 – 2020-11-13
- Fix a bug that triggered the re-binning of VL images even when not necessary.
- Fix a bug that caused an error in writing the log file for data products that are not images (e.g., light curves).

## 2.0 – 2020-10-06
- Include the re-binning of images that had been acquired with binning enabled, so that the size of the data in the FITS is consistent with the commanded binning.
- Modify the interpolation method of house-keeping parameters to manage cases in which interpolation fails, avoiding output values such as “NaN” or “Inf”.
- Add conversion to string for all the keywords of the scientific header that are boolean type.
- Include the generation of a log file with information on the processing and errors, useful for debugging.

## 1.1 – 2020-04-21
- Modify the interpolation method of house-keeping parameters to take into account:
	- the possible lack of a parameter;
	- the possible presence of an uncalibrated parameter (whose engineering value is flagged with “N/A”);
	- the fact that the GEN_TIME keyword is provided in UTC rather than OBT.
- Fix a bug that prevented the correct update of some keywords of the FITS header, in particular those related to sensor temperatures, whose values are interpolated using the input house-keeping parameter table.
- Add correct computation of the TELAPSE and XPOSURE keywords.
- Include the EMPTY_PARAMS keyword in the output auxiliary JSON file, containing the list of house-keeping parameters in the input table that are not calibrated but which have been interpolated to correct the value of some of the FITS header keywords.
- Revise the structure of the binary table containing the house-keeping parameters to make it more user-friendly.

## 1.0 – 2020-03-06
- Add several optimisations to the code.
- Add the decode_obt.pro routine.

## 0.0 – 2020-01-16
Prototype version of the L1 pipeline.