ASTROSAT CZTI

Data Quality Report

Orbit 02511

Creation date: 2024-06-27T14:18:52.358659
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/AS1T01_103T01_9000000374_02511cztM0_level2.evt modeM0/AS1T01_103T01_9000000374_02511cztM0_level2_quad_clean.evt
Size (bytes)545,175,36086,042,880
Size519.9 MB 82.1 MB
Events in quadrant A4,140,065515,324
Events in quadrant B3,629,214520,844
Events in quadrant C4,070,247512,214
Events in quadrant D4,129,065501,765

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180528
B0164723
C0172256
D0177973

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7986560.701227%
B7988540.676014%
C7987660.826343%
D7988480.600901%

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 8949 7991 7 7 0.08% 0.09%
B 8949 7991 1 1 0.01% 0.01%
C 8949 7991 6 6 0.07% 0.08%
D 8949 7991 4 4 0.04% 0.05%

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 0 128 622496 3314.2 912 889 187.6
A 12 194 10219 49.74 912 889 187.6
A 0 226 9707 47.01 912 889 187.6
B 15 85 44337 243.54 925 902 178.3
B 12 111 14429 75.85 925 902 178.3
B 11 111 12138 63.0 925 902 178.3
C 2 53 459859 2167.89 894 896 211.7
C 10 65 48035 222.66 894 896 211.7
C 0 207 40844 188.69 894 896 211.7
D 11 131 471619 2213.48 884 860 212.7
D 11 130 167707 784.51 884 860 212.7
D 2 184 59159 274.12 884 860 212.7

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