ASTROSAT CZTI

Data Quality Report

Orbit 40234

Creation date: 2024-06-27T22:13:57.805412
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_086T01_9000005534_40234cztM0_level2.fits modeM0/AS1T05_086T01_9000005534_40234cztM0_level2_quad_clean.evt
Size (bytes)384,431,040101,183,040
Size366.6 MB 96.5 MB
Events in quadrant A3,691,563672,848
Events in quadrant B3,032,569698,994
Events in quadrant C3,043,058673,854
Events in quadrant D3,995,033597,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145553
B0130662
C0125662
D0161112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60161292.144282%
B6016600.997340%
C6016190.315824%
D60162403.989362%

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 8762 6018 89 89 1.02% 1.48%
B 8762 6018 45 45 0.51% 0.75%
C 8762 6018 8 8 0.09% 0.13%
D 8762 6018 194 194 2.21% 3.22%

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 537430 3888.13 669 655 138.1
A 13 248 511433 3699.82 669 655 138.1
A 6 10 17982 125.51 669 655 138.1
B 0 229 124298 941.46 672 656 131.3
B 0 221 78266 590.95 672 656 131.3
B 5 255 77271 583.37 672 656 131.3
C 15 214 259733 1668.11 659 664 155.3
C 14 254 79739 509.15 659 664 155.3
C 9 187 60889 387.78 659 664 155.3
D 12 227 1027515 6396.51 647 629 160.5
D 13 249 154161 956.36 647 629 160.5
D 9 19 96145 594.97 647 629 160.5

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