ASTROSAT CZTI

Data Quality Report

Orbit 24611

Creation date: 2024-06-27T19:07:53.871873
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/AS1T03_189T01_9000003614_24611cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24611cztM0_level2_quad_clean.evt
Size (bytes)560,842,560110,113,920
Size534.9 MB 105.0 MB
Events in quadrant A3,619,928722,262
Events in quadrant B4,836,309703,894
Events in quadrant C4,186,427695,900
Events in quadrant D3,831,785688,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157622
B0192892
C0172063
D0164752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7522660.877426%
B75224956.580697%
C75211912.539556%
D7521610.811062%

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 7772 7524 1 1 0.01% 0.01%
B 7772 7524 218 218 2.80% 2.90%
C 7771 7523 7 7 0.09% 0.09%
D 7771 7523 19 19 0.24% 0.25%

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 13 254 11404 55.88 936 916 187.7
A 3 137 9164 43.95 936 916 187.7
A 0 226 7961 37.54 936 916 187.7
B 3 64 1193566 6809.74 913 888 175.1
B 7 202 33060 183.69 913 888 175.1
B 12 111 22119 121.22 913 888 175.1
C 7 247 425021 1997.46 906 913 212.3
C 14 238 143516 671.63 906 913 212.3
C 9 54 36550 167.84 906 913 212.3
D 1 52 178769 794.52 917 889 223.9
D 8 195 161073 715.48 917 889 223.9
D 2 234 33344 144.96 917 889 223.9

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