ASTROSAT CZTI

Data Quality Report

Orbit 18037

Creation date: 2024-06-27T17:44:11.089724
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_159T01_9000002678_18037cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18037cztM0_level2_quad_clean.evt
Size (bytes)543,291,840109,520,640
Size518.1 MB 104.4 MB
Events in quadrant A3,566,800737,446
Events in quadrant B3,546,153739,033
Events in quadrant C3,791,820693,069
Events in quadrant D5,086,362672,253

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147641
B0146661
C0155941
D0196521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68191221.789119%
B68191211.774454%
C68191392.038422%
D68193695.411351%

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 7829 6820 25 25 0.32% 0.37%
B 7829 6820 8 8 0.10% 0.12%
C 7829 6820 1 1 0.01% 0.01%
D 7829 6820 208 208 2.66% 3.05%

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 125469 686.36 892 874 181.5
A 8 34 10239 51.59 892 874 181.5
A 0 226 7858 38.47 892 874 181.5
B 7 220 42240 242.75 886 868 170.4
B 12 111 18553 103.77 886 868 170.4
B 11 111 16276 90.41 886 868 170.4
C 3 233 248689 1248.62 843 851 198.5
C 14 238 131818 659.82 843 851 198.5
C 8 208 111544 557.68 843 851 198.5
D 5 222 923760 4380.73 855 832 210.7
D 11 176 393544 1864.03 855 832 210.7
D 7 238 252939 1196.64 855 832 210.7

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