ASTROSAT CZTI

Data Quality Report

Orbit 27344

Creation date: 2024-06-27T19:39:06.435355
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_255T01_9000003922_27344cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27344cztM0_level2_quad_clean.evt
Size (bytes)520,436,160110,482,560
Size496.3 MB 105.4 MB
Events in quadrant A3,361,777762,621
Events in quadrant B3,461,577762,043
Events in quadrant C4,250,909691,279
Events in quadrant D4,264,254695,030

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138650
B0141170
C0165850
D0166900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6231921.476489%
B62301081.733547%
C62304967.961477%
D62302604.173355%

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 7531 6231 5 5 0.07% 0.08%
B 7530 6230 12 12 0.16% 0.19%
C 7530 6230 244 244 3.24% 3.92%
D 7530 6231 171 171 2.27% 2.74%

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 13 248 48781 280.78 857 845 170.7
A 13 254 10272 55.22 857 845 170.7
A 0 226 7735 40.36 857 845 170.7
B 5 172 73927 464.47 839 822 157.4
B 0 190 61112 383.05 839 822 157.4
B 12 111 17789 107.8 839 822 157.4
C 2 16 751096 4197.3 771 778 178.8
C 8 208 339461 1894.6 771 778 178.8
C 14 238 125913 700.01 771 778 178.8
D 1 52 828100 4135.77 799 783 200.0
D 2 250 222941 1110.57 799 783 200.0
D 10 103 66715 329.6 799 783 200.0

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