ASTROSAT CZTI

Data Quality Report

Orbit 50641

Creation date: 2025-02-07T10:10:04.852512
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/AS1T05_241T01_9000006446_50641cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50641cztM0_level2_quad_clean.evt
Size (bytes)762,284,16089,899,200
Size727.0 MB 85.7 MB
Events in quadrant A5,272,189623,969
Events in quadrant B12,737,025402,968
Events in quadrant C5,179,598618,040
Events in quadrant D4,479,295583,050

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203882
B0427522
C0204042
D0188262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70904936.953456%
B7090345648.744711%
C70904706.629055%
D70913965.584544%

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 8915 7092 291 291 3.26% 4.10%
B 8915 7092 2719 2719 30.50% 38.34%
C 8915 7092 323 323 3.62% 4.55%
D 8916 7093 306 306 3.43% 4.31%

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 4 4 664864 3622.06 734 714 183.4
A 12 80 556202 3029.45 734 714 183.4
A 8 38 166731 905.4 734 714 183.4
B 4 170 9326944 74350.43 596 577 125.4
B 4 206 301649 2400.17 596 577 125.4
B 5 185 228447 1816.6 596 577 125.4
C 13 3 590682 2988.77 718 714 197.4
C 10 171 436065 2205.48 718 714 197.4
C 0 176 393591 1990.31 718 714 197.4
D 15 185 555929 2775.94 714 688 200.0
D 7 110 217295 1082.93 714 688 200.0
D 2 249 185209 922.52 714 688 200.0

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