ASTROSAT CZTI

Data Quality Report

Orbit 10859

Creation date: 2024-06-27T16:04:48.980660
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/AS1A03_118T01_9000001570_10859cztM0_level2.evt modeM0/AS1A03_118T01_9000001570_10859cztM0_level2_quad_clean.evt
Size (bytes)631,598,400103,783,680
Size602.3 MB 99.0 MB
Events in quadrant A6,066,846629,159
Events in quadrant B5,170,506665,485
Events in quadrant C3,247,938684,729
Events in quadrant D4,142,815649,536

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229903
B0203112
C0150662
D0171122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A738174910.147676%
B73814856.570925%
C7381130.176128%
D7381540.731608%

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 7771 7382 484 484 6.23% 6.56%
B 7771 7382 264 264 3.40% 3.58%
C 7771 7382 0 0 0.00% 0.00%
D 7771 7382 30 30 0.39% 0.41%

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 8 5 2784060 16750.44 815 797 166.2
A 15 223 55146 327.09 815 797 166.2
A 15 239 29877 175.01 815 797 166.2
B 4 239 1644823 10239.49 842 824 160.6
B 0 219 63499 390.37 842 824 160.6
B 3 189 43952 268.62 842 824 160.6
C 13 61 6258 27.99 830 833 193.8
C 14 234 3631 14.44 830 833 193.8
C 8 128 3551 14.02 830 833 193.8
D 8 195 536070 2674.76 825 800 200.1
D 13 249 142437 707.76 825 800 200.1
D 1 52 88933 440.4 825 800 200.1

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