ASTROSAT CZTI

Data Quality Report

Orbit 19516

Creation date: 2024-06-27T18:03:42.891199
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/AS1A05_175T01_9000002894_19516cztM0_level2.evt modeM0/AS1A05_175T01_9000002894_19516cztM0_level2_quad_clean.evt
Size (bytes)700,122,24096,387,840
Size667.7 MB 91.9 MB
Events in quadrant A3,530,833649,256
Events in quadrant B3,589,978651,174
Events in quadrant C3,817,512619,510
Events in quadrant D9,759,087478,443

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154252
B0155272
C0160152
D0340072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7458911.220166%
B74581331.783320%
C74581702.279431%
D7458222729.860552%

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 7703 7459 0 0 0.00% 0.00%
B 7703 7459 2 2 0.03% 0.03%
C 7703 7459 0 0 0.00% 0.00%
D 7702 7458 2062 2062 26.77% 27.65%

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 9068 44.13 915 894 185.2
A 0 226 7961 38.15 915 894 185.2
A 3 137 7810 37.34 915 894 185.2
B 12 111 21746 119.32 906 880 174.9
B 11 111 19406 105.94 906 880 174.9
B 14 111 16807 91.08 906 880 174.9
C 3 233 240114 1172.69 874 879 204.0
C 14 238 136313 663.88 874 879 204.0
C 9 221 31926 152.19 874 879 204.0
D 7 238 6187912 32175.15 787 762 192.3
D 12 218 292006 1514.56 787 762 192.3
D 1 52 249703 1294.57 787 762 192.3

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