ASTROSAT CZTI

Data Quality Report

Orbit 03809

Creation date: 2024-06-27T14:33:53.576990
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/AS1G05_194T01_9000000490_03809cztM0_level2.evt modeM0/AS1G05_194T01_9000000490_03809cztM0_level2_quad_clean.evt
Size (bytes)607,268,16063,921,600
Size579.1 MB 61.0 MB
Events in quadrant A3,660,371373,417
Events in quadrant B4,002,897370,258
Events in quadrant C5,572,204354,482
Events in quadrant D4,679,379346,934

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153863
B0161362
C0214422
D0187882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70391171.662168%
B70391241.761614%
C70392493.537434%
D70394556.463986%

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 7829 7039 2 2 0.03% 0.03%
B 7829 7039 10 10 0.13% 0.14%
C 7829 7039 132 132 1.69% 1.88%
D 7829 7039 340 340 4.34% 4.83%

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 13 251 290391 1659.14 851 834 174.5
A 0 50 47324 266.38 851 834 174.5
A 0 118 29767 165.78 851 834 174.5
B 14 167 421253 2498.93 855 833 168.2
B 0 173 119040 702.61 855 833 168.2
B 15 204 106644 628.93 855 833 168.2
C 2 53 2376653 12605.52 804 805 188.5
C 9 247 40150 208.75 804 805 188.5
C 7 254 10801 53.04 804 805 188.5
D 2 32 1486431 7594.89 797 773 195.6
D 13 223 55686 280.72 797 773 195.6
D 13 239 42334 212.47 797 773 195.6

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
Veto Counter