ASTROSAT CZTI

Data Quality Report

Orbit 45170

Creation date: 2024-06-27T23:10:10.564797
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_049T05_9000006050_45170cztM0_level2.fits modeM0/AS1A13_049T05_9000006050_45170cztM0_level2_quad_clean.evt
Size (bytes)534,093,120106,554,240
Size509.4 MB 101.6 MB
Events in quadrant A6,207,796687,887
Events in quadrant B4,577,042752,644
Events in quadrant C3,024,615733,683
Events in quadrant D5,485,850624,245

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226694
B0178831
C0129062
D0205121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61314907.992171%
B61321402.283105%
C6132400.652316%
D61335098.299364%

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 7347 6133 284 284 3.87% 4.63%
B 7347 6133 40 40 0.54% 0.65%
C 7348 6134 19 19 0.26% 0.31%
D 7348 6134 461 461 6.27% 7.52%

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 2216528 15163.43 707 693 146.1
A 15 223 1117360 7641.59 707 693 146.1
A 15 174 76954 521.87 707 693 146.1
B 3 112 1350467 9676.57 722 700 139.5
B 4 171 100795 717.59 722 700 139.5
B 5 32 62276 441.44 722 700 139.5
C 12 2 48174 276.92 729 734 171.3
C 3 233 36716 210.04 729 734 171.3
C 2 14 33776 192.88 729 734 171.3
D 8 230 717085 4080.39 704 684 175.6
D 5 235 597896 3401.53 704 684 175.6
D 13 249 495264 2816.97 704 684 175.6

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