ASTROSAT CZTI

Data Quality Report

Orbit 17899

Creation date: 2024-06-27T17:42:22.464858
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/AS1A05_109T01_9000002662_17899cztM0_level2.evt modeM0/AS1A05_109T01_9000002662_17899cztM0_level2_quad_clean.evt
Size (bytes)460,995,84065,620,800
Size439.6 MB 62.6 MB
Events in quadrant A3,299,584382,518
Events in quadrant B3,508,666388,372
Events in quadrant C3,365,078372,908
Events in quadrant D3,325,854369,063

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141492
B0146111
C0142151
D0143391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6799731.073687%
B6800941.382353%
C68001201.764706%
D6800550.808824%

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 7639 6799 2 2 0.03% 0.03%
B 7640 6800 21 21 0.27% 0.31%
C 7640 6800 22 22 0.29% 0.32%
D 7640 6800 6 6 0.08% 0.09%

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 15 174 89592 516.14 835 816 172.0
A 0 226 7150 36.83 835 816 172.0
A 3 137 6473 32.89 835 816 172.0
B 4 216 73492 451.64 829 807 160.9
B 4 80 47130 287.84 829 807 160.9
B 0 189 45245 276.12 829 807 160.9
C 14 238 124343 655.35 799 804 188.5
C 9 54 83012 436.1 799 804 188.5
C 9 160 17048 86.17 799 804 188.5
D 12 110 113866 564.95 817 793 200.1
D 13 168 52378 257.73 817 793 200.1
D 2 234 26387 127.88 817 793 200.1

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