ASTROSAT CZTI

Data Quality Report

Orbit 20160701_G05_192T01_9000000526_level2

Creation date: 2025-10-31T04:54:27.974828
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/AS1G05_192T01_9000000526cztM0_level2.fits modeM0/AS1G05_192T01_9000000526cztM0_level2_quad_clean.evt
Size (bytes)167,964,480168,163,200
Size160.2 MB 160.4 MB
Events in quadrant A988,090953,093
Events in quadrant B991,7201,013,671
Events in quadrant C976,864966,463
Events in quadrant D875,136904,683

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0447040
B0386670
C0455710
D0390270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181929595.271548%
B181922021.110378%
C1819211556.348945%
D181922181.198329%

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 22736 18094 0 0 0.00% 0.00%
B 22736 18187 0 0 0.00% 0.00%
C 22736 18142 0 0 0.00% 0.00%
D 22736 18187 0 0 0.00% 0.00%

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 14 188 948 10.48 256 239 67.6
A 0 29 921 10.08 256 239 67.6
A 7 110 840 8.89 256 239 67.6
B 2 9 777 9.33 262 248 56.7
B 12 226 699 7.96 262 248 56.7
B 5 128 687 7.75 262 248 56.7
C 1 80 710 6.67 258 240 70.5
C 1 81 702 6.56 258 240 70.5
C 9 188 661 5.97 258 240 70.5
D 11 82 743 7.69 248 225 67.4
D 1 19 677 6.71 248 225 67.4
D 3 31 643 6.2 248 225 67.4

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