Open Access
Table 1
Columns in the ARCAFF:CCD region classification catalogue.
| Name | Unit | Type | Description |
|---|---|---|---|
| target_time | − | Time | Astropy time of the underlying full-disk observation (TAI, printed in ISO). |
| number | − | int64 | Region identifier; NOAA active-region number for AR rows, or 0 for non-AR frames. |
| HMI geometry, paths and quality | |||
| latitude_hmi | deg | float64 | Heliographic latitude of the region centre derived from HMI data. |
| longitude_hmi | deg | float64 | Heliographic longitude of the region centre from HMI data. |
| processed_path_image_mag_hmi | − | str99 | Path to the processed full-disk HMI magnetogram used as input. |
| processed_path_image_cont_hmi | − | str109 | Path to the processed full-disk HMI continuum image. |
| top_right_cutout_hmi | pix | float64[2] | (x, y) pixel coordinates of the top-right corner of the HMI cutout in the full-disk frame. |
| bottom_left_cutout_hmi | pix | float64[2] | (x, y) pixel coordinates of the bottom-left corner of the HMI cutout in the full-disk frame. |
| path_image_cutout_hmi | − | str97 | Path to the HMI cutout magnetogram. |
| dim_image_cutout_hmi | pix | float64[2] | Dimensions (nx, ny) of the HMI cutout in pixels. |
| sum_ondisk_nans_hmi | − | int64 | Number of NaN pixels within the on-disk portion of the HMI cutout. |
| quicklook_path_hmi | − | str88 | Path to a PNG quicklook of the HMI full-disk image. |
| filtered_hmi | − | bool | True if this HMI instance is filtered (excluded) from the science sample. |
| filter_reason_hmi | − | str57 | Comma-separated list of reasons why the HMI instance was filtered. |
| QUALITY_hmi | − | str10 | HMI data-quality bit mask (string/hex representation). |
| MDI geometry, paths and quality | |||
| latitude_mdi | deg | float64 | Heliographic latitude of the region centre derived from MDI data. |
| longitude_mdi | deg | float64 | Heliographic longitude of the region centre from MDI data. |
| processed_path_image_mag_mdi | − | str99 | Path to the processed full-disk MDI magnetogram used as input. |
| processed_path_image_cont_mdi | − | str101 | Path to the processed full-disk MDI continuum image. |
| top_right_cutout_mdi | pix | float64[2] | (x, y) pixel coordinates of the top-right corner of the MDI cutout. |
| bottom_left_cutout_mdi | pix | float64[2] | (x, y) pixel coordinates of the bottom-left corner of the MDI cutout. |
| path_image_cutout_mdi | − | str97 | Path to the MDI cutout magnetogram. |
| dim_image_cutout_mdi | pix | float64[2] | Dimensions (nx, ny) of the MDI cutout in pixels. |
| sum_ondisk_nans_mdi | − | int64 | Number of NaN pixels within the on-disk portion of the MDI cutout. |
| quicklook_path_mdi | − | str85 | Path to a PNG quicklook of the MDI full-disk image. |
| filtered_mdi | − | bool | True if this MDI instance is filtered (excluded) from the science sample. |
| filter_reason_mdi | − | str43 | Comma-separated list of reasons why the MDI instance was filtered. |
| QUALITY_mdi | − | str8 | MDI data-quality bit mask (string representation). |
| Physical and catalogue classifications | |||
| region_type | − | str2 | Region type label (AR, IA, QS, etc.). |
| magnetic_class | − | str16 | Hale/Mount Wilson magnetic classification. |
| carrington_longitude | deg | float64 | Carrington longitude of the region at target_time. |
| area | − | float64 | Reported NOAA region area. |
| mcintosh_class | − | str3 | McIntosh classification. |
| longitudinal_extent | deg | float64 | Reported longitudinal extent of the region. |
| number_of_sunspots | − | int64 | Number of sunspots reported for the region. |
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