Yes, that script is now obsolete and no longer available, its replacement is the new script MureDenoiseDetectorSettings. I made this change to simplify finding detector settings for denoising purposes, which seemed to be the primary reason for using the old script. The new script runs faster but not give the same information, however here is how you can recover the information from the old script with these calculations:
SNR = Square root of flat frame exposure
Signal = Flat frame exposure divided by gain
Temporal noise = SNR divided by gain
Sorry for the inconvenience
