ASTROSAT CZTI

Data Quality Report

Orbit 19540

Creation date: 2024-06-27T18:03:49.659301
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_101T05_9000002902_19540cztM0_level2.evt modeM0/AS1A05_101T05_9000002902_19540cztM0_level2_quad_clean.evt
Size (bytes)262,186,56077,460,480
Size250.0 MB 73.9 MB
Events in quadrant A1,813,805521,535
Events in quadrant B1,869,458527,030
Events in quadrant C2,088,075507,066
Events in quadrant D1,891,226503,766

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081851
B082701
C085991
D085221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A405930.073910%
B4059100.246366%
C4059170.418822%
D4059150.369549%

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 4059 4059 0 0 0.00% 0.00%
B 4059 4059 4 4 0.10% 0.10%
C 4059 4059 0 0 0.00% 0.00%
D 4059 4059 11 11 0.27% 0.27%

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 2 7459 73.25 468 458 95.6
A 13 254 5524 53.01 468 458 95.6
A 0 226 3965 36.69 468 458 95.6
B 3 64 20987 231.73 467 456 88.6
B 0 198 10921 118.12 467 456 88.6
B 12 111 10493 113.29 467 456 88.6
C 3 233 215809 1984.82 459 464 108.5
C 14 238 72113 660.38 459 464 108.5
C 0 207 8913 77.87 459 464 108.5
D 12 233 74632 662.55 462 450 112.0
D 12 218 41583 367.38 462 450 112.0
D 2 234 14581 126.21 462 450 112.0

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