ASTROSAT CZTI

Data Quality Report

Orbit 21353

Creation date: 2024-06-27T18:26:41.798435
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_041T01_9000003150_21353cztM0_level2.evt modeM0/AS1A05_041T01_9000003150_21353cztM0_level2_quad_clean.evt
Size (bytes)635,080,320100,638,720
Size605.7 MB 96.0 MB
Events in quadrant A3,278,714668,573
Events in quadrant B3,341,496679,734
Events in quadrant C4,058,456640,443
Events in quadrant D8,099,675589,631

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139281
B0141761
C0163691
D0287041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6728280.416171%
B6729570.847080%
C67292383.536930%
D6729122718.234507%

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 7443 6729 0 0 0.00% 0.00%
B 7444 6730 9 9 0.12% 0.13%
C 7444 6729 61 61 0.82% 0.91%
D 7444 6730 1017 1017 13.66% 15.11%

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 5 168 77425 461.45 828 811 166.0
A 13 254 8412 45.78 828 811 166.0
A 11 47 7148 38.17 828 811 166.0
B 0 230 39948 248.19 825 803 157.7
B 3 64 36833 228.44 825 803 157.7
B 0 197 31875 197.0 825 803 157.7
C 3 233 816656 4383.49 795 802 186.1
C 14 238 124292 663.5 795 802 186.1
C 10 91 10255 50.79 795 802 186.1
D 13 174 3531333 18581.85 776 753 190.0
D 7 238 1298422 6829.78 776 753 190.0
D 1 52 166868 874.28 776 753 190.0

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