ASTROSAT CZTI

Data Quality Report

Orbit 16156

Creation date: 2024-06-27T17:18:45.570134
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/AS1T02_109T01_9000002386_16156cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16156cztM0_level2_quad_clean.evt
Size (bytes)507,205,44077,929,920
Size483.7 MB 74.3 MB
Events in quadrant A3,413,235476,562
Events in quadrant B3,595,392482,684
Events in quadrant C3,423,497465,295
Events in quadrant D4,463,209457,499

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145423
B0150192
C0144102
D0180142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68591181.720367%
B68591652.405598%
C68591682.449337%
D68592894.213442%

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 8695 6862 2 2 0.02% 0.03%
B 8695 6862 9 9 0.10% 0.13%
C 8695 6862 1 1 0.01% 0.01%
D 8695 6862 92 92 1.06% 1.34%

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 70261 393.59 863 842 176.4
A 8 247 14658 78.33 863 842 176.4
A 9 143 7952 40.31 863 842 176.4
B 5 65 45096 267.26 861 841 165.6
B 4 216 38965 230.24 861 841 165.6
B 7 220 31806 187.0 861 841 165.6
C 14 238 126156 641.88 828 833 195.2
C 3 233 35835 179.27 828 833 195.2
C 0 207 26418 131.04 828 833 195.2
D 1 52 964617 4698.04 839 814 205.1
D 5 222 196101 951.92 839 814 205.1
D 10 70 80657 389.19 839 814 205.1

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