ASTROSAT CZTI

Data Quality Report

Orbit 18431

Creation date: 2024-06-27T17:49:45.601035
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_199T01_9000002732_18431cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18431cztM0_level2_quad_clean.evt
Size (bytes)546,863,04096,039,360
Size521.5 MB 91.6 MB
Events in quadrant A3,741,207594,998
Events in quadrant B4,192,514605,026
Events in quadrant C3,745,968589,182
Events in quadrant D4,350,697574,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164032
B0175782
C0163012
D0181982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78123614.621096%
B78134976.361193%
C78133734.774094%
D78133554.543709%

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 8222 7814 2 2 0.02% 0.03%
B 8223 7815 103 103 1.25% 1.32%
C 8223 7815 0 0 0.00% 0.00%
D 8223 7815 54 54 0.66% 0.69%

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 15 174 29045 144.05 958 931 195.2
A 4 2 19325 94.25 958 931 195.2
A 14 238 9089 41.8 958 931 195.2
B 0 244 255294 1380.29 950 924 184.3
B 10 245 184222 994.63 950 924 184.3
B 12 111 22531 117.24 950 924 184.3
C 14 238 138592 639.42 914 917 215.3
C 3 233 28898 129.96 914 917 215.3
C 5 112 6649 26.62 914 917 215.3
D 1 52 425148 1850.34 932 902 229.3
D 13 168 152498 661.18 932 902 229.3
D 10 66 66073 284.24 932 902 229.3

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