ASTROSAT CZTI

Data Quality Report

Orbit 17621

Creation date: 2024-06-27T17:38:46.104711
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/AS1T03_071T01_9000002610_17621cztM0_level2.evt modeM0/AS1T03_071T01_9000002610_17621cztM0_level2_quad_clean.evt
Size (bytes)551,862,72085,875,840
Size526.3 MB 81.9 MB
Events in quadrant A3,746,460530,049
Events in quadrant B3,828,644527,851
Events in quadrant C4,469,779501,965
Events in quadrant D4,147,433506,643

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161202
B0163342
C0180602
D0177093

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7681821.067569%
B76821461.900547%
C76821902.473314%
D76811682.187215%

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 8456 7683 3 3 0.04% 0.04%
B 8457 7684 15 15 0.18% 0.20%
C 8457 7684 7 7 0.08% 0.09%
D 8456 7683 50 50 0.59% 0.65%

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 14 237 128658 661.23 941 919 193.2
A 0 226 8221 37.8 941 919 193.2
A 3 137 7124 32.12 941 919 193.2
B 7 220 111782 616.56 934 909 179.8
B 12 111 21047 111.99 934 909 179.8
B 11 111 18352 97.0 934 909 179.8
C 3 233 728039 3475.17 891 896 209.2
C 14 238 137065 650.78 891 896 209.2
C 5 218 65662 309.53 891 896 209.2
D 12 144 334873 1479.31 913 883 225.8
D 13 189 94089 412.83 913 883 225.8
D 15 0 88573 388.4 913 883 225.8

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