ASTROSAT CZTI

Data Quality Report

Orbit 37425

Creation date: 2024-06-27T21:39:49.979038
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/AS1A09_002T01_9000005322_37425cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37425cztM0_level2_quad_clean.evt
Size (bytes)613,667,52083,367,360
Size585.2 MB 79.5 MB
Events in quadrant A3,395,874542,988
Events in quadrant B3,185,502553,313
Events in quadrant C3,200,899562,539
Events in quadrant D8,401,272450,466

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137162
B0133701
C0131611
D0291401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5937881.482230%
B5937811.364325%
C5937540.909550%
D5937144924.406266%

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 7218 5937 74 74 1.03% 1.25%
B 7219 5938 54 54 0.75% 0.91%
C 7219 5938 40 40 0.55% 0.67%
D 7219 5938 1434 1434 19.86% 24.15%

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 10 83 280694 2093.35 662 649 133.8
A 15 222 248060 1849.41 662 649 133.8
A 9 143 237920 1773.61 662 649 133.8
B 5 172 285808 2272.76 656 637 125.5
B 4 171 127794 1013.42 656 637 125.5
B 5 255 56394 444.37 656 637 125.5
C 14 254 323338 2143.83 647 653 150.5
C 15 214 251997 1669.86 647 653 150.5
C 0 10 37730 246.33 647 653 150.5
D 12 227 4596410 31974.0 588 573 143.7
D 13 249 704498 4897.32 588 573 143.7
D 10 253 281156 1952.06 588 573 143.7

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