ASTROSAT CZTI

Data Quality Report

Orbit 21518

Creation date: 2024-06-27T18:28:54.028054
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_144T02_9000003176_21518cztM0_level2.evt modeM0/AS1A05_144T02_9000003176_21518cztM0_level2_quad_clean.evt
Size (bytes)493,194,240108,671,040
Size470.3 MB 103.6 MB
Events in quadrant A3,202,318702,494
Events in quadrant B3,339,820719,389
Events in quadrant C3,287,695709,861
Events in quadrant D4,632,668673,416

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142292
B0145772
C0143502
D0186513

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6976160.229358%
B6977300.429984%
C6977781.117959%
D69763194.572821%

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 8706 6978 0 0 0.00% 0.00%
B 8707 6979 1 1 0.01% 0.01%
C 8707 6979 1 1 0.01% 0.01%
D 8706 6978 267 267 3.07% 3.83%

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 11323 62.73 828 809 167.6
A 15 48 7522 40.05 828 809 167.6
A 0 226 7035 37.14 828 809 167.6
B 0 230 34115 209.65 831 810 158.9
B 12 111 19291 116.33 831 810 158.9
B 11 111 16812 100.73 831 810 158.9
C 14 238 127515 672.55 809 814 188.4
C 13 61 5615 25.48 809 814 188.4
C 3 233 4385 18.96 809 814 188.4
D 1 52 1362250 7102.55 795 773 191.7
D 14 35 170190 883.81 795 773 191.7
D 13 153 55430 285.13 795 773 191.7

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