ASTROSAT CZTI

Data Quality Report

Orbit 16955

Creation date: 2024-06-27T17:30:00.082986
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_206T01_9000002518_16955cztM0_level2.evt modeM0/AS1A05_206T01_9000002518_16955cztM0_level2_quad_clean.evt
Size (bytes)572,325,12097,116,480
Size545.8 MB 92.6 MB
Events in quadrant A4,131,135614,147
Events in quadrant B4,524,441618,770
Events in quadrant C4,036,935598,704
Events in quadrant D4,135,247591,119

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173671
B0183251
C0166171
D0173951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74493494.685193%
B74503324.456376%
C74501512.026846%
D74501081.449664%

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 7825 7451 151 151 1.93% 2.03%
B 7826 7452 97 97 1.24% 1.30%
C 7826 7452 0 0 0.00% 0.00%
D 7826 7452 27 27 0.35% 0.36%

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 749939 4197.91 875 854 178.4
A 12 189 11658 60.55 875 854 178.4
A 0 226 7603 37.82 875 854 178.4
B 3 64 374332 2221.79 873 849 168.1
B 15 35 280198 1661.8 873 849 168.1
B 15 33 159186 941.92 873 849 168.1
C 3 233 585138 2962.56 847 851 197.2
C 14 238 129808 653.86 847 851 197.2
C 8 128 9077 41.71 847 851 197.2
D 1 52 444842 2106.85 864 836 210.7
D 11 129 213611 1009.64 864 836 210.7
D 15 0 116735 549.95 864 836 210.7

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