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  • CRYOSAT IN 3D
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    • CryoSat
    • Data
    • Data Quality Reports

    Data Quality Reports

    To enable their full scientific and operational exploitation, the CryoSat products are routinely monitored for quality. The results of quality control and mission performance monitoring are reported through different means:


    Daily Performance Quality Reports

    ​​​​​Daily reports are generated for all CryoSat product types, but ONLY when an unexpected issue is identified in the products and needs to be reported. The table below indicates specific days where quality checks have identified an unexpected issue in the data products and points users to the relevant daily report where they can find more information.

    These daily reports provide an overview of the L1 and L2 product quality, relevant mission/ instrument news, known data gaps and global plots of the data coverage. They provide information about any inconsistencies observed in the data products and any flags raised, including quality flags, tracking flags, measurement confidence flags, correction error flags. Users may wish to use these flags to apply filtering to their dataset.

    You can find all the daily reports in QRAS, by applying the active filters: ‘CryoSat’, ‘SIRAL’, ‘Daily’ and ‘Quality Control Report’.

    Note to CryoSat Data Users: Daily Reports only when an issue is identified in the products. If you have any queries about any other days or data products, then please get in touch via eohelp@esa.int. To give us your feedback on the quality information provided and what you need, please fill out our user survey or send your feedback via email .
    DateProduct TypeObservationExplanationRelevant Daily Quality Report
    03/09/2026IOPAll L1B and L2 IOP products are missing GIM Ionospheric Corrections. The Forecast AUX file needed to generate this correction was not available at the time of processing, therefore AUXI file was used instead.CS2_DR_IOP_20260903
    01/07/2026IOPAll L1B and L2 IOP products between 12:05:29 and 23:26:03 are missing Dynamic Atmospheric Corrections (187 products).AUXI file missing at the time of processing.CS2_DR_IOP_20260701
    14/04/2026IOPAll L1B and L2 IOP products between 12:21:43 and 23:31:01 are missing Dynamic Atmospheric Corrections (211 products).AUXI file missing at the time of processing.CS2_DR_IOP_20260414
    20/02/2026IOPAll L1B and L2 IOP products between 12:00:20 and 23:42:32 are missing Dynamic Atmospheric Corrections (245 products).AUXI file missing at the time of processing.CS2_DR_IOP_20260220
    14/01/2026NRTAll L1B and L2 NRT products are missing GIM Ionospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NRT_20260114
    14/01/2026NOPAll L1B and L2 NOP products are missing GIM Ionospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NOP_20260114
    14/11/2025NRTAll L1B and L2 NRT products are missing GIM Ionospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NRT_20260114
    14/11/2025NOPAll L1B and L2 NOP products are missing GIM Ionospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NOP_20260114
    12/11/2025IOPAll L1B and L2 IOP products between 12:12:48 and 23:50:40 are missing Dynamic Atmospheric Corrections (241 products).AUXI file missing at the time of processing.CS2_DR_IOP_20251112
    05/11/2025NRTAll L1B and L2 NRT products are missing GIM Ionospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NRT_20251105
    05/11/2025NOPAll NOP L1B and L2 products between 00:02:06 and 12:19:07 are missing GIM Ionospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NOP_20251105
    03/11/2025IOPAll L1B and L2 IOP products are missing GIM Ionospheric Corrections.The Forecast AUX file needed to generate this correction was not available at the time of processing, therefore AUXI file was used instead.CS2_DR_IOP_20251103
    02/11/2025IOPAll L1B and L2 IOP products between 12:27:04 and 23:43:32 are missing Dynamic Atmospheric Corrections.AUXI file missing at the time of processing.CS2_DR_IOP_20251102
    22/10/2025NOPSome L1B and L2 NOP products between 00:11:06 and 12:33:51 are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections and Dynamic Atmospheric Corrections. See report for more details.AUXI file missing at the time of processing.CS2_DR_NOP_20251022
    21/10/2025IOPSome L1B and L2 IOP products between 23:40:35 on 20/10/2025 and 23:50:27 on 21/10/2025 are impacted by missing ECMWF Meteo Corrections, GIM Ionospheric Corrections and Dynamic Atmospheric Corrections. See report for more details.The Forecast AUX and AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_IOP_20251021
    17/10/2025IOPAll L1, L2 & P2P IOP products between 12:07:39 and 23:52:46 (382 products) are missing the Dynamic Atmospheric Correction.The Forecast AUXI MOG2D files needed to generate this correction were not available in time for processing.CS2_DR_IOP_20251017
    22/09/2025NRTL1B and L2 NRT products are missing GIM Ionospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NRT_20250922
    21/09/2025NRTL1B and L2 NRT products are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections, Dynamic Atmospheric Corrections, Climatological Pressure, Global Amplitude and Phase.AUXI file missing at the time of processing.CS2_DR_NRT_20250921
    21/09/2025NOPL1B and L2 NOP products before 15:29:34 are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections and Dynamic Atmospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NOP_20250921
    20/09/2025NRTL1B and L2 NRT products are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections, Dynamic Atmospheric Corrections, Climatological Pressure, Global Amplitude and Phase.AUXI file missing at the time of processing.CS2_DR_NRT_20250920
    20/09/2025NOPL1B and L2 NOP products after 11:45:26 are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections and Dynamic Atmospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NOP_20250920
    19/09/2025IOPAll L1B and L2 IOP products after 12:01:13 are missing Dynamic Atmospheric Corrections.AUXI file missing at the time of processing.CS2_DR_IOP_20250919
    28/08/2025NRTL1B and L2 NRT products up to 12:36:32 are missing GIM Ionospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NRT_20250828
    28/08/2025NOPL1B and L2 NOP products up to 12:36:32 are missing GIM Ionospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NOP_20250828
    26/08/2025IOPAll L1B and L2 IOP products are missing GIM Ionospheric Corrections.The Forecast AUX file needed to generate this correction was not available at the time of processing, therefore AUXI file was used instead.CS2_DR_IOP_20250826
    21/07/2025NRTAll L1B and L2 SARN and SINN products are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections, Dynamic Atmospheric Corrections, Climatological Pressure, Global Amplitude and Phase.AUXI file missing at the time of processing.CS2_DR_NRT_20250721
    21/07/2025NOPL1B and L2 NOP products before 11:39:28 are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections and Dynamic Atmospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NOP_20250721
    20/07/2025NRTAll L1B and L2 SARN and SINN products are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections, Dynamic Atmospheric Corrections, Climatological Pressure, Global Amplitude and Phase.AUXI file missing at the time of processing.CS2_DR_NRT_20250720
    20/07/2025NOPAll L1B and L2 NOP products are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections and Dynamic Atmospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NOP_20250720
    19/07/2025NRTAll L1B and L2 SARN and SINN products are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections, Dynamic Atmospheric Corrections, Climatological Pressure, Global Amplitude and Phase.AUXI file missing at the time of processing.CS2_DR_NRT_20250719
    19/07/2025NOPAll L1B and L2 NOP products after 11:58:09 are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections and Dynamic Atmospheric Corrections.AUXI file missing at the time of processing.CS2_DR_NOP_20250719
    19/07/2025IOPAll L1B and L2 IOP products between 11:56:09 and 18:08:30 are missing ECMWF Meteo Corrections.AUX file missing at the time of processing.CS2_DR_IOP_20250719
    18/07/2025IOPAll L1B and L2 IOP products between 00:04:16 and 06:01:46 are missing ECMWF Meteo Corrections, GIM Ionospheric Corrections and Dynamic Atmospheric Corrections.The Forecast AUX file needed to generate this correction was not available at the time of processing, therefore AUXI file was used instead.CS2_DR_IOP_20250718
    17/07/2025IOPOne L1B and L2 IOP product at 23:43:39 is missing ECMWF Meteo Corrections.The Forecast AUX file needed to generate this correction was not available at the time of processing, therefore AUXI file was used instead.CS2_DR_IOP_20250717
    23/06/2025IOPAll L1, L2 & P2P IOP products between 12:06:17 and 23:50:46 (426 products) are missing the Dynamic Atmospheric Correction.The Forecast AUXI MOG2D files needed to generate this correction were not available in time for processing.CS2_DR_IOP_20250623
    17/06/2025IOPAll L1, L2 & P2P IOP products from 20250617T120019 to 20250617T234848 are missing the Dynamic Atmospheric Correction.The Forecast AUXI MOG2D files needed to generate this correction were not available in time for processing.CS2_DR_IOP_20250617
    13/05/2025IOPAll L2 IOPM products between 12:02:49 and 23:09:09 (76 products) are missing ECMWF Meteo Corrections. All IOP P2P products between 17:47:20 and 22:05:04 (8 products) are missing ECMWF Meteo Corrections.AUX file missing at the time of processing causing AUXI file to be used instead.CS2_DR_IOP_20250513
    10/05/2025NOPAll L1B and L2 NOP products between 11:57:24 and 23:48:03 (204 products) are missing ECMWF Meteo Corrections.The forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20250510
    27/04/2025NOPAll L1B and L2 NOP products up to 06:21:13 (123 products) are missing ECMWF Meteo Corrections.The forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20250427
    26/04/2025NOPAll L1B and L2 NOP products between 17:56:31 and 23:55:10 (100 products) are missing ECMWF Meteo Corrections.The forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20250426
    25/04/2025NOPAll L1B and L2 NOP products up to 12:11:49 (233 products) are missing the GIM Ionospheric Correction.The forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20250425
    19/04/2025NOPAll L1B and L2 NOP products between 11:55:15 and 00:03:14 on 20/04/2025 (224 products) are missing ECMWF Meteo Corrections.The forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20250419
    27/03/2025NOPAll L1B, L2 IOP and P2P products (400 products) are missing ECMWF Meteo CorrectionsThe Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20250327
    26/03/2025NOPAll L1B and L2 NOP products between 06:00:01 and 06:01:22 (2 products) and after 23:59:37 (2 products) are missing ECMWF Meteo Corrections.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20250326
    23/03/2025NOPAll L1B, L2 IOP and P2P products (461 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20250323
    21/03/2025NOPAll L1B, L2 IOP and P2P products (461 products) are missing the GIM Ionospheric Correction.The forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20250321
    07/03/2025NOPAll L1B and L2 NOP products between 00:09:58 and 03:01:25 (51 products) are missing ECMWF Meteo Corrections.The forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20250307
    06/03/2025NOPAll L1B and L2 NOP products between 11:16:29 and 21:07:33 (240 products) are missing. All L1B and L2 NOP products between 21:07:23 and 23:56:07 (52 products) are missing ECMWF Meteo Corrections.Faulty AUXI files caused processing failures. The forecast AUXI files needed to generate this correction were not available at the time of processing.CS2_DR_NOP_20250306
    20/02/2025NOPAll L1B and L2 NOP products up to 11:29:38 (213 products) are missing the GIM Ionospheric Correction.The forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20250220
    13/02/2025NOPAll L1B and L2 NOP products between 12:26:18 and 22:17:10 (191 products) are missing ECMWF Meteo Corrections.The forecast AUXI files needed to generate this correction were not available at the time of processing.CS2_DR_NOP_20250213
    24.11.2024NOPAll L1B and L2 NOP products up to 06:14:52 (94 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241124
    23.11.2024IOPAll L1B, L2 IOP and P2P products (461 products) are missing the GIM Ionospheric Correction.The AUX file needed to generate this correction was not available at the time of processing, the forecast AUXI file was used instead.CS2_DR_IOP_20241123
    12.11.2024NOPAll L1B and L2 NOP products up to 23:58:34 (400 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241112
    10.11.2024NOPAll L1B and L2 NOP products up to 00:06:29 11/11/2024 (418 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241110
    09.11.2024NOPAll L1B and L2 NOP products up to 00:04:10 10/11/2024 (455 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241109
    08.11.2024NOPAll L1B and L2 NOP products up to 00:08:27 09/11/2024 (420 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241108
    07.11.2024NOPAll L1B and L2 NOP products up to 00:06:03 08/11/2024 (426 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241107
    06.11.2024NOPAll L1B and L2 NOP products up to 00:00:04 07/11/2024 (413 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241106
    04.11.2024NOPAll L1B and L2 NOP products up to 23:41:39 (420 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241104
    02.11.2024NOPAll L1B and L2 NOP products up to 23:41:39 (366 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241102
    31.10.2024NOPAll L1B and L2 NOP products up to 00:03:46 01/11/2024 (419 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241031
    29.10.2024NOPAll L1B and L2 NOP products up to 00:05:39 30/10/2024 (390 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241029
    27.10.2024NOPAll L1B and L2 NOP products up to 00:07:32 28/10/2024 (407 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241027
    25.10.2024NOPAll L1B and L2 NOP products up to 00:09:25 26/10/2024 (425 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241025
    23.10.2024NOPAll L1B and L2 NOP products up to 00:11:18 (24/10/2024) (456 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20241023
    25.07.2024NOPAll L1B and L2 NOP products up to 11:26:12 (162 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20240725
    24.07.2024IOPAll L1B and L2 IOP products from 12:00:00 to 23:24:07 (112 products) are missing the Dynamic Atmospheric Correction.TheForecast AUXI MOG2D files needed to generate this correction were not available in time for processing.CS2_DR_IOP_20240724
    11.05.2024IOPAll L1B and L2 IOP products (423 products) are missing the GIM Ionospheric Correction.The Forecast AUX file needed to generate this correction was not available at the time of processing, therefore AUXI file was used instead.CS2_DR_IOP_20240511
    06.04.2024IOPAll L1B and L2 IOP products (427 products) are missing the GIM Ionospheric Correction.The Forecast AUX file needed to generate this correction was not available at the time of processing, therefore AUXI file was used instead.CS2_DR_IOP_20240406
    22.12.2023IOPAll L1B and L2 IOP products (111 products) up to 23:52:11 are missing the Dynamic Atmospheric Correction.The Forecast AUXI MOG2D files needed to generate this correction were not available in time for processing.CS2_DR_IOP_20231222
    15.11.2023NOPAll L1 and L2 NOP products up to 11:26:55 (190 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20231115
    13.11.2023IOPAll L1B and L2 IOP products (445 products) are missing the GIM Ionospheric Correction.The Forecast AUX file needed to generate this correction was not available at the time of processing, therefore AUXI file was used instead.CS2_DR_IOP_20231113
    13.08.2023IOPAll L1B and L2 IOP products from 12:19:48 to 23:53:52 (121 products) are missing the Dynamic Atmospheric Correction.The Forecast AUXI MOG2D files needed to generate this correction were not available in time for processing.CS2_DR_IOP_20230813
    20.02.2023NOPAll L1 and L2 NOP products from 00:00:30 to 15:55:01 (128 products) are missing the GIM Ionospheric Correction.The Forecast AUXI file needed to generate this correction was not available at the time of processing.CS2_DR_NOP_20230220
    25.01.2023NOPAll L1 and L2 NOP products from 12:03:54 to 16:09:51 (64 products) are missing the Meteo Corrections.The Forecast Meteo AUXI files needed to generate these corrections were not available at the time of processing.CS2_DR_NOP_20230125


    Monthly Performance Quality Reports
    Monthly (or Cyclic) reports are generated for Offline L1B and L2 ice products and include monthly plots and statistics to provide users with a clear snapshot of SIRAL instrument health, data availability and any changes in key quality parameters. Cyclic reports cover a 30-day reporting period, defined since the beginning of the mission purely for statistic reporting purposes. You can find the reports in QRAS, by applying the active filters: ‘CryoSat’, ‘SIRAL’, ‘Cyclic’ and ‘Quality Control Report’.


    Quality Monitoring of Ice Products
    Long-term CryoSat performance and ice product quality is monitored by the CryoSat L2 Performance Monitoring service. This service routinely monitors L2 and L2i data products generated operationally. Long-term analysis includes the monitoring of key L2 parameters (e.g. backscatter, freeboard and Sea Surface Height Anomaly), retracker failure statistics and L2 quality flags. Crossover analysis is performed in order to assess the performance of the instrument and the processing chain.


    Quality Monitoring of Ocean Products
    CryoSat Ocean products are routinely quality-controlled and validated by the UK National Oceanography Centre (NOC). The CryoSat Quality Control and Validation Daily and Monthly reports aim to provide an overview of the quality of CryoSat NRT Ocean (NOP) Products, Intermediate Ocean Products (IOP) and Geophysical Ocean Products (GOP). Fast Delivery Marine (FDM) production was discontinued on 01/02/2021.


    Quality Monitoring of Cryo-TEMPO Products
    TThe CryoSat ThEMatic PrOducts (Cryo-TEMPO) quality control and validation portal provides monthly thematic product reports, maps and statistical trends of each product's parameters over key areas of interest for each Cryo-TEMPO theme (land ice, sea ice, polar oceans, coastal oceans and inland waters) The Cryo-TEMPO products include fully-traceable discrepancies and use the most up to date processing dedicated to each thematic area. Throughout the project, the products will be constantly updated, and validated by a group of Thematic Users, thus ensuring optimal relevance and impact for the intended target communities. The Cryo-TEMPO quality control portal provides users with easy access to view product parameters and statistics from each Cryo-TEMPO product baseline, as soon as they are available.

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    Note to CryoSat Data Users: We are changing our QC procedures to provide Daily Reports only when an issue is identified in the products. If you have any queries about any other days or data products, then please get in touch via eohelp@esa.int.

    To give us your feedback on the quality information provided and what you need, please fill out our user survey or send your feedback via email.

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