ASTROSAT CZTI

Data Quality Report

Orbit 55350

Creation date: 2025-12-21T11:24:46.135628
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_009T01_9000006534_55350cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55350cztM0_level2_quad_clean.evt
Size (bytes)586,952,640119,724,480
Size559.8 MB 114.2 MB
Events in quadrant A3,988,558795,371
Events in quadrant B4,214,637855,543
Events in quadrant C4,845,592757,894
Events in quadrant D8,009,559618,011

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185740
B0189540
C0209030
D0298940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8611440.510974%
B8610750.871080%
C86102292.659698%
D8611127814.841482%

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 8611 8611 31 31 0.36% 0.36%
B 8610 8610 26 26 0.30% 0.30%
C 8610 8610 193 193 2.24% 2.24%
D 8611 8611 1137 1137 13.20% 13.20%

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 3 45 114136 502.37 916 891 225.4
A 0 8 110534 486.39 916 891 225.4
A 12 3 50112 218.35 916 891 225.4
B 5 185 206089 1037.03 911 874 197.9
B 0 199 139440 700.23 911 874 197.9
B 10 247 124546 624.96 911 874 197.9
C 9 38 513329 2101.06 895 886 243.9
C 13 3 480955 1968.33 895 886 243.9
C 12 249 122604 499.05 895 886 243.9
D 11 129 4207690 17575.43 848 810 239.4
D 5 38 107529 445.85 848 810 239.4
D 15 42 76355 315.61 848 810 239.4

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