ASTROSAT CZTI

Data Quality Report

Orbit 48436

Creation date: 2024-09-11T20:06:29.145373
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/AS1A13_029T01_9000006426_48436cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48436cztM0_level2_quad_clean.evt
Size (bytes)571,573,440122,711,040
Size545.1 MB 117.0 MB
Events in quadrant A8,395,269779,364
Events in quadrant B4,421,045815,758
Events in quadrant C3,618,046823,537
Events in quadrant D4,110,941747,870

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308540
B0187091
C0168090
D0179520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78956448.157061%
B78944896.194578%
C78941021.292121%
D78951792.267258%

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 7895 7895 109 109 1.38% 1.38%
B 7894 7894 75 75 0.95% 0.95%
C 7894 7894 2 2 0.03% 0.03%
D 7895 7895 49 49 0.62% 0.62%

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 4486864 23294.01 908 885 192.6
A 13 248 390157 2021.34 908 885 192.6
A 13 254 15529 76.04 908 885 192.6
B 12 16 550795 2985.81 903 874 184.2
B 12 32 183572 991.96 903 874 184.2
B 5 171 38610 204.89 903 874 184.2
C 15 208 31860 140.1 910 913 220.9
C 14 254 20488 88.62 910 913 220.9
C 12 250 9388 38.37 910 913 220.9
D 5 32 166259 719.68 912 884 229.8
D 12 233 123999 535.78 912 884 229.8
D 2 249 118482 511.77 912 884 229.8

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