ASTROSAT CZTI

Data Quality Report

Orbit 24633

Creation date: 2024-06-27T19:08:08.997824
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/AS1C05_012T06_9000003616_24633cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24633cztM0_level2_quad_clean.evt
Size (bytes)716,342,400106,035,840
Size683.2 MB 101.1 MB
Events in quadrant A2,877,731764,130
Events in quadrant B2,983,826766,038
Events in quadrant C11,330,981574,395
Events in quadrant D4,100,321690,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123161
B0125882
C0377441
D0160131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5938410.690468%
B5938721.212529%
C5938342157.611991%
D59383986.702593%

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 7063 5939 0 0 0.00% 0.00%
B 7063 5939 20 20 0.28% 0.34%
C 7063 5938 2689 2689 38.07% 45.28%
D 7063 5938 356 356 5.04% 6.00%

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 9811 61.15 746 732 148.5
A 3 137 6569 39.31 746 732 148.5
A 0 226 6296 37.48 746 732 148.5
B 5 172 63091 458.95 730 713 135.9
B 3 64 21914 155.99 730 713 135.9
B 12 111 16693 117.58 730 713 135.9
C 7 247 8296817 60008.05 603 608 138.3
C 0 79 259036 1869.26 603 608 138.3
C 10 91 153093 1102.95 603 608 138.3
D 7 238 1094291 6458.6 695 674 169.3
D 1 52 230552 1357.6 695 674 169.3
D 8 195 96497 565.9 695 674 169.3

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