Opening a CSW File

The CSW file type is primarily associated with Cary WinUV.

CSW	File extension: CSW
	File type:	data file

What is a CSW file?

CSW files mostly belong to Cary WinUV.

The CSW file is a vendor-specific data file used in specialized measurement and analysis applications. Its contents vary by the software that creates it.
Below are the main uses observed:

Varian UV-Vis-NIR files: These files store baseline information for spectroscopy. They record calibration readings and reference spectra used to adjust and verify instrument performance. They work with Varian systems such as Cary WinUV. See more at Agilent.
CPAP Sleep Data: In medical settings, a CSW file may carry sleep data from CPAP devices. The file records information on breathing patterns and operational parameters for sleep analysis. This format is managed by software like SleepReport and linked to ResMed devices. More info is available at ResMed.
Trimble GeoDB files: Another use is for geospatial databases. Here, CSW files store coordinate system and mapping data, utilized in geospatial analysis with Trimble Geomatics Office. Visit Trimble for details.
Cornerstone data: Some CSW files serve as cornerstone data files that hold essential reference information for various analytical tasks.

Note: The abbreviation CSW is applied by each vendor and does not have a universal full form. Its meaning is derived from context and the proprietary software used to create and manage the file.

FilExt.com note: To open and view a CSW file, use the corresponding vendor's application and consult its documentation for detailed instructions.

How do you open CSW files?

You need a suitable software like Cary WinUV to open a CSW file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your CSW file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a CSW file directly in the browser:. Just drag the file onto this browser window and drop it.

Online CSW Text Viewer

Choose your .csw file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert CSW files:

Cary WinUV
See the previous paragraphs to learn more about the main application. CSW files are often referred to as Cary WinUV data files because this type of file is primarily created or used by this software.
Compressed Square Wave
CSW files are a way of storing sample data in a compact form. The identifying characters used for this association are - Hex: 43 6F 6D 70 72 65 73 73 65 64 20 53 71 75 61 72 65 20 57 61 76 65 1A, ASCII: Compressed.Square.Wave.
WordPerfect (Setup Info File) by Corel Corporation
Program ID is CSWFile Related links: CKNOW Info Page

CSW file extension format:

To find out what program is needed to open CSW files, you need to determine the file format. The first characters in a file identify the file format, for example, HTML files start with the bytes <html>. Nonetheless, different programs can utilize the same file extension to represent distinct file formats. Double-clicking on the file often results in an error when opening. If there are problems opening a file, you must first determine the file format used. In the following you will find our evaluation of the CSW files:

The CSW file extension is not common and is used by a few programs, each with its own file format. However, the following two file formats are common:

30% of all CSW files start with the bytes 11 56 61 72 69 61 6E 20 55 56 2D 56 49 53 2D 4E crucial for this file format. These files are binary files, so they do not contain text, but only cryptic characters. The file size is in the range of 1 KB to 22 KB. The file type is old but is used even today. Certain words are almost always found in the files, such as TBaselineInfoStore and Varian UV-VIS-NIR. Files like these are sometimes connected to baseline.
25% of all CSW files start with the bytes 6C 00 0B 00 00 00 05 00, which are crucial for this file format. These files contain neither text nor words, but only data. CSW files are between 3 KB and 670 KB in size. The keywords SLEEP WELL! HOFFRICHTE and POINT2AUTOCPAP are typical for these files. Examples of file names are APC00001.csw.

All other CSW files (45%) have different formats. If you want to find out which format your CSW file belongs to, just click on the button "Choose your .csw file to analyze".

Technical Data for CSW File Extension

File classification:

Data

Identifier:

Hex: 43 6F 6D 70 72 65 73 73 65 64 20 53 71 75 61 72 65 20 57 61 76 65 1A, ASCII: Compressed.Square.Wave (provided by TrID database)

Related files:

csd, raw, geo, csv, crswap, xlsx, bsw, scw, dsw, zip, jpg, swf, psd, rar, txt, docx, xml, dat, db, log

Mime type:

application/octet-stream

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: CSWFile, FileType: Corel Setup Wizard File

a csw data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with CSW files

Associate the CSW file extension with the correct application.
Update your software that should actually open data files. Because only the current version supports the latest CSW file format. Search, therefore, e.g. on the manufacturer website after an available Cary WinUV update.
To make sure that your CSW file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .CSW file online - secure, fast, and no downloads needed.