ASTROSAT CZTI

Data Quality Report

Orbit 16923

Creation date: 2024-06-27T17:29:33.969036
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/AS1T03_030T01_9000002512_16923cztM0_level2.evt modeM0/AS1T03_030T01_9000002512_16923cztM0_level2_quad_clean.evt
Size (bytes)620,562,24089,873,280
Size591.8 MB 85.7 MB
Events in quadrant A4,483,550571,847
Events in quadrant B4,866,981574,106
Events in quadrant C3,469,551558,828
Events in quadrant D5,504,630534,073

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176092
B0189082
C0145032
D0209372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69273324.792840%
B69285427.823326%
C69281592.295035%
D69285157.433603%

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 7708 6929 170 170 2.21% 2.45%
B 7709 6930 220 220 2.85% 3.17%
C 7709 6930 0 0 0.00% 0.00%
D 7709 6930 340 340 4.41% 4.91%

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 1169116 6725.81 861 840 173.7
A 0 226 7612 38.99 861 840 173.7
A 11 29 7263 36.98 861 840 173.7
B 3 64 1228197 7620.78 850 831 161.1
B 15 35 108732 669.96 850 831 161.1
B 7 220 100401 618.24 850 831 161.1
C 3 233 134497 703.37 822 828 190.0
C 14 238 127463 666.36 822 828 190.0
C 13 61 5668 25.47 822 828 190.0
D 1 52 2177528 10819.33 825 800 201.2
D 2 152 77482 381.14 825 800 201.2
D 15 0 62613 307.24 825 800 201.2

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