ASTROSAT CZTI

Data Quality Report

Orbit 25755

Creation date: 2024-06-27T19:21:09.151150
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_027T11_9000003752_25755cztM0_level2.evt modeM0/AS1A07_027T11_9000003752_25755cztM0_level2_quad_clean.evt
Size (bytes)561,378,24079,842,240
Size535.4 MB 76.1 MB
Events in quadrant A3,910,327474,204
Events in quadrant B3,992,213481,381
Events in quadrant C4,166,870459,933
Events in quadrant D4,397,048454,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165950
B0166150
C0171450
D0179390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78753614.584127%
B78753904.952381%
C78743814.838710%
D78743214.076708%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7875 7875 1 1 0.01% 0.01%
B 7875 7875 1 1 0.01% 0.01%
C 7874 7874 1 1 0.01% 0.01%
D 7874 7874 33 33 0.42% 0.42%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 6 16 43116 206.16 1003 979 204.4
A 13 254 10252 45.37 1003 979 204.4
A 3 137 9971 44.0 1003 979 204.4
B 0 245 34717 171.62 997 970 196.6
B 0 219 32513 160.41 997 970 196.6
B 12 111 24686 120.61 997 970 196.6
C 3 233 236299 1030.93 965 973 228.3
C 14 238 150650 655.71 965 973 228.3
C 14 225 22301 93.43 965 973 228.3
D 8 195 281206 1197.64 978 953 234.0
D 13 104 112722 477.64 978 953 234.0
D 1 52 106279 450.1 978 953 234.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter