ASTROSAT CZTI

Data Quality Report

Orbit 16789

Creation date: 2024-06-27T17:27:58.466920
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_004T07_9000002492_16789cztM0_level2.evt modeM0/AS1A05_004T07_9000002492_16789cztM0_level2_quad_clean.evt
Size (bytes)622,013,76088,911,360
Size593.2 MB 84.8 MB
Events in quadrant A3,802,133586,660
Events in quadrant B3,766,501581,039
Events in quadrant C3,900,838552,301
Events in quadrant D6,919,977510,230

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154413
B0153152
C0158022
D0251662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66331502.261420%
B66331792.698628%
C66331942.924770%
D663385612.905171%

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 9059 6636 5 5 0.06% 0.08%
B 9059 6635 17 17 0.19% 0.26%
C 9059 6636 10 10 0.11% 0.15%
D 9059 6636 551 551 6.08% 8.30%

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 181659 976.0 928 913 185.2
A 9 143 47120 249.51 928 913 185.2
A 10 234 8992 43.63 928 913 185.2
B 0 189 70210 405.97 912 892 170.7
B 15 35 63696 367.82 912 892 170.7
B 12 111 19511 109.05 912 892 170.7
C 3 233 272994 1371.39 862 873 198.4
C 14 238 135298 677.45 862 873 198.4
C 0 207 124763 624.36 862 873 198.4
D 1 52 2315823 11309.64 858 835 204.7
D 12 110 986932 4817.48 858 835 204.7
D 10 70 226295 1101.46 858 835 204.7

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