ASTROSAT CZTI

Data Quality Report

Orbit 20037

Creation date: 2024-06-27T18:10:25.688793
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/AS1A05_180T01_9000002986_20037cztM0_level2.evt modeM0/AS1A05_180T01_9000002986_20037cztM0_level2_quad_clean.evt
Size (bytes)539,631,360119,183,040
Size514.6 MB 113.7 MB
Events in quadrant A3,766,841799,537
Events in quadrant B3,865,785792,831
Events in quadrant C3,823,575761,532
Events in quadrant D4,377,015733,606

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158392
B0161462
C0158922
D0180022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7506660.879297%
B75061201.598721%
C75061411.878497%
D75063374.489742%

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 7711 7508 0 0 0.00% 0.00%
B 7711 7508 3 3 0.04% 0.04%
C 7711 7508 1 1 0.01% 0.01%
D 7711 7508 218 218 2.83% 2.90%

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 11 29 24553 119.98 965 949 196.7
A 15 191 15835 75.66 965 949 196.7
A 3 1 8562 38.7 965 949 196.7
B 0 197 56884 302.69 957 935 184.8
B 12 111 21793 112.84 957 935 184.8
B 11 111 18986 97.66 957 935 184.8
C 14 238 144694 656.57 927 936 219.0
C 10 91 44244 197.79 927 936 219.0
C 13 61 6532 25.56 927 936 219.0
D 13 249 527148 2327.89 922 900 226.1
D 1 52 301825 1331.16 922 900 226.1
D 8 195 50264 218.36 922 900 226.1

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