1. Introduction

2. The ASpiX method  
2.1. Modelling the cluster population in the XOD  
2.2. Fitting the X-ray Observable Diagrams  
2.3. General settings of the present study  

3. Large-scale X-ray emissivity maps of the intra-cluster medium  
3.1. The Aardvark simulations  
3.2. The X-ray properties of clusters with a template approach  
3.3. Ingredients of the cluster modelling  
3.4. Photon maps  

4. Conversion into XMM images  
4.1. Back- and foreground photons  

5. Creation of the C1 cluster cosmological catalogues  
5.1. Correlation with the input catalogues  
5.2. The cosmological sample  
5.3. Measurement errors  

6. The cosmological fit  
6.1. Analysis of the 700 deg² survey  

7. Discussion  
7.1. Error estimates on the cosmological parameters - 711 deg² catalogue  
7.2. Estimates on the cosmological parameters - 39 × 18 deg² catalogues  
7.3. Fitting cosmology along with cluster scaling relations  

8. Summary and conclusion