ASTROSAT CZTI

Data Quality Report

Orbit 54729

Creation date: 2025-11-11T19:19:40.593038
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/AS1A14_103T01_9000006524_54729cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54729cztM0_level2_quad_clean.evt
Size (bytes)688,861,440133,277,760
Size656.9 MB 127.1 MB
Events in quadrant A4,530,584883,885
Events in quadrant B8,837,411865,803
Events in quadrant C6,764,661809,315
Events in quadrant D4,608,210798,440

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209831
B0329851
C0274071
D0213061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9779680.695368%
B9779117612.025770%
C97795855.982207%
D9780280.286299%

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 9794 9780 55 55 0.56% 0.56%
B 9794 9780 1105 1105 11.28% 11.30%
C 9794 9780 629 629 6.42% 6.43%
D 9795 9781 25 25 0.26% 0.26%

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 7 190 297621 1207.73 987 961 245.6
A 4 236 176255 713.64 987 961 245.6
A 0 8 46277 184.49 987 961 245.6
B 2 249 3685046 18023.85 946 912 204.4
B 0 173 771287 3768.9 946 912 204.4
B 5 185 292668 1427.35 946 912 204.4
C 9 38 1478710 5613.9 951 946 263.2
C 15 219 655475 2486.5 951 946 263.2
C 14 254 275715 1043.82 951 946 263.2
D 2 62 235467 863.13 958 915 271.7
D 5 173 98307 358.39 958 915 271.7
D 11 129 93341 340.12 958 915 271.7

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