ASTROSAT CZTI

Data Quality Report

Orbit 25542

Creation date: 2024-06-27T19:18:49.231070
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_147T01_9000003722_25542cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25542cztM0_level2_quad_clean.evt
Size (bytes)528,442,560101,430,720
Size504.0 MB 96.7 MB
Events in quadrant A3,520,389659,978
Events in quadrant B3,721,577662,684
Events in quadrant C3,622,774624,367
Events in quadrant D4,643,356616,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152030
B0156230
C0154090
D0184260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7304941.286966%
B73041201.642935%
C73041532.094743%
D73041652.259036%

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 7819 7305 0 0 0.00% 0.00%
B 7819 7305 16 16 0.20% 0.22%
C 7819 7305 8 8 0.10% 0.11%
D 7819 7305 109 109 1.39% 1.49%

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 13 254 11400 57.34 910 890 183.3
A 4 2 11048 55.42 910 890 183.3
A 3 137 8653 42.35 910 890 183.3
B 0 229 113456 650.25 899 876 173.1
B 15 33 34104 191.92 899 876 173.1
B 12 111 21407 118.58 899 876 173.1
C 14 238 137297 662.43 866 871 205.9
C 2 16 92103 442.99 866 871 205.9
C 3 233 22485 104.95 866 871 205.9
D 1 52 710532 3033.31 872 854 234.0
D 8 195 585302 2498.05 872 854 234.0
D 2 234 31072 129.16 872 854 234.0

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