ASTROSAT CZTI

Data Quality Report

Orbit 18566

Creation date: 2024-06-27T17:51:45.922497
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_167T01_9000002758_18566cztM0_level2.evt modeM0/AS1A05_167T01_9000002758_18566cztM0_level2_quad_clean.evt
Size (bytes)500,823,36066,528,000
Size477.6 MB 63.4 MB
Events in quadrant A3,332,941390,099
Events in quadrant B3,481,433397,785
Events in quadrant C3,376,977384,927
Events in quadrant D4,521,634374,658

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141782
B0145032
C0141352
D0179782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6698540.806211%
B6698901.343685%
C6697681.015380%
D66972443.643422%

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 7768 6698 0 0 0.00% 0.00%
B 7768 6698 19 19 0.24% 0.28%
C 7767 6697 0 0 0.00% 0.00%
D 7767 6697 151 151 1.94% 2.25%

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 6 16 26378 146.53 857 840 174.3
A 13 254 11387 60.52 857 840 174.3
A 0 226 7529 38.38 857 840 174.3
B 7 220 67895 410.7 851 829 163.3
B 0 190 56182 338.97 851 829 163.3
B 12 111 19160 112.26 851 829 163.3
C 14 238 128145 661.73 821 825 192.4
C 4 254 34571 175.39 821 825 192.4
C 13 61 5781 25.76 821 825 192.4
D 7 238 1056081 5239.48 826 803 201.4
D 1 52 310476 1537.53 826 803 201.4
D 2 234 28056 135.31 826 803 201.4

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