ASTROSAT CZTI

Data Quality Report

Orbit 30779

Creation date: 2024-06-27T20:19:32.630357
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/AS1A10_071T18_9000004448_30779cztM0_level2.evt modeM0/AS1A10_071T18_9000004448_30779cztM0_level2_quad_clean.evt
Size (bytes)744,903,36096,742,080
Size710.4 MB 92.3 MB
Events in quadrant A4,520,729628,902
Events in quadrant B5,495,576635,059
Events in quadrant C4,337,895603,311
Events in quadrant D7,727,078568,364

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181021
B0216691
C0172981
D0278742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70893655.148822%
B70892864.034420%
C70893354.725631%
D708875510.651806%

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 7269 7089 109 109 1.50% 1.54%
B 7269 7089 2 2 0.03% 0.03%
C 7269 7089 68 68 0.94% 0.96%
D 7268 7088 680 680 9.36% 9.59%

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 0 13 1094480 6017.83 889 870 181.7
A 13 254 12026 61.39 889 870 181.7
A 3 137 9085 45.2 889 870 181.7
B 6 159 1940312 11277.75 880 857 172.0
B 0 190 44844 255.78 880 857 172.0
B 5 255 27841 156.91 880 857 172.0
C 3 233 485158 2408.41 847 852 201.1
C 0 10 401979 1994.77 847 852 201.1
C 14 238 134770 665.96 847 852 201.1
D 8 195 3833012 16859.38 846 831 227.3
D 13 249 410800 1803.63 846 831 227.3
D 12 233 110503 482.49 846 831 227.3

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