ASTROSAT CZTI

Data Quality Report

Orbit 50695

Creation date: 2025-02-11T00:14:15.036763
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/AS1T05_241T01_9000006446_50695cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50695cztM0_level2_quad_clean.evt
Size (bytes)466,070,40093,767,040
Size444.5 MB 89.4 MB
Events in quadrant A4,113,224612,157
Events in quadrant B3,344,360674,359
Events in quadrant C5,138,257557,079
Events in quadrant D4,162,173552,342

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163821
B0144462
C0195741
D0168161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63621892.970764%
B63611101.729288%
C636265510.295505%
D63622714.259667%

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 7487 6363 154 154 2.06% 2.42%
B 7486 6362 54 54 0.72% 0.85%
C 7487 6363 505 505 6.75% 7.94%
D 7487 6363 217 217 2.90% 3.41%

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 3 406801 2439.78 674 659 166.5
A 12 80 365166 2189.67 674 659 166.5
A 8 38 289582 1735.62 674 659 166.5
B 5 172 176056 1226.37 679 657 143.0
B 5 185 57830 399.75 679 657 143.0
B 7 252 53652 370.54 679 657 143.0
C 15 231 1601054 9081.64 644 639 176.2
C 13 113 291636 1651.28 644 639 176.2
C 13 3 153074 865.0 644 639 176.2
D 2 249 312774 1718.41 659 635 181.6
D 7 96 175026 960.07 659 635 181.6
D 15 108 153835 843.41 659 635 181.6

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