ASTROSAT CZTI

Data Quality Report

Orbit 26476

Creation date: 2024-06-27T19:29:30.011805
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_104T02_9000003826_26476cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26476cztM0_level2_quad_clean.evt
Size (bytes)701,884,80089,858,880
Size669.4 MB 85.7 MB
Events in quadrant A3,235,084628,777
Events in quadrant B3,328,432642,892
Events in quadrant C3,525,773599,613
Events in quadrant D10,737,456405,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135960
B0138420
C0144330
D0362730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6356530.833858%
B6356761.195721%
C63561352.123977%
D6355290345.680566%

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 7611 6357 0 0 0.00% 0.00%
B 7611 6357 2 2 0.03% 0.03%
C 7611 6357 27 27 0.35% 0.42%
D 7609 6354 2552 2552 33.54% 40.16%

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 13 254 10279 55.91 838 824 169.1
A 3 137 7456 39.21 838 824 169.1
A 0 226 7354 38.61 838 824 169.1
B 4 200 32154 197.96 836 818 158.3
B 12 111 18697 112.95 836 818 158.3
B 11 111 16451 98.76 836 818 158.3
C 2 16 199624 1064.48 794 800 186.8
C 14 238 129704 690.14 794 800 186.8
C 3 233 59577 314.69 794 800 186.8
D 7 80 5781906 40496.41 598 583 142.8
D 1 52 1998261 13993.13 598 583 142.8
D 11 176 604231 4228.37 598 583 142.8

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