ASTROSAT CZTI

Data Quality Report

Orbit 40110

Creation date: 2024-06-27T22:12:26.952499
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/AS1A12_004T01_9000005520_40110cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40110cztM0_level2_quad_clean.evt
Size (bytes)434,891,52086,731,200
Size414.7 MB 82.7 MB
Events in quadrant A4,969,154527,408
Events in quadrant B2,566,765627,529
Events in quadrant C4,176,729566,430
Events in quadrant D3,971,161531,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183202
B0111461
C0160051
D0155161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533375114.082130%
B533380.150009%
C53333596.731671%
D53332975.569098%

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 7127 5334 612 612 8.59% 11.47%
B 7127 5334 2 2 0.03% 0.04%
C 7127 5334 329 329 4.62% 6.17%
D 7127 5334 272 272 3.82% 5.10%

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 13 248 1544940 13757.27 546 536 112.3
A 6 10 861412 7668.53 546 536 112.3
A 10 83 398877 3548.35 546 536 112.3
B 0 189 148844 1282.83 595 578 115.6
B 4 171 38706 329.89 595 578 115.6
B 12 0 17347 145.09 595 578 115.6
C 9 187 1464015 11054.18 567 571 132.4
C 15 214 215442 1623.04 567 571 132.4
C 10 20 186793 1406.63 567 571 132.4
D 12 227 895675 6341.94 573 558 141.1
D 2 249 234500 1657.49 573 558 141.1
D 5 32 205094 1449.15 573 558 141.1

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