ASTROSAT CZTI

Data Quality Report

Orbit 50706

Creation date: 2025-02-11T19:10:33.582994
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/AS1T05_241T01_9000006446_50706cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50706cztM0_level2_quad_clean.evt
Size (bytes)122,935,68023,552,640
Size117.2 MB 22.5 MB
Events in quadrant A907,612153,563
Events in quadrant B878,134168,130
Events in quadrant C1,801,419128,750
Events in quadrant D831,556140,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037730
B038020
C064820
D036910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1661291.745936%
B1661301.806141%
C166133119.927754%
D1661120.722456%

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 1661 1661 15 15 0.90% 0.90%
B 1661 1661 23 23 1.38% 1.38%
C 1661 1660 225 225 13.55% 13.55%
D 1661 1661 9 9 0.54% 0.54%

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 4 3 40469 919.28 173 168 43.8
A 9 191 27164 615.79 173 168 43.8
A 3 130 25603 580.18 173 168 43.8
B 2 249 61248 1602.38 170 165 38.1
B 0 213 55627 1454.93 170 165 38.1
B 8 128 34017 888.04 170 165 38.1
C 15 212 342989 8012.33 151 150 42.8
C 5 10 324441 7578.85 151 150 42.8
C 0 193 162923 3804.09 151 150 42.8
D 2 249 32703 691.45 166 160 47.1
D 8 176 30378 642.05 166 160 47.1
D 2 120 30242 639.16 166 160 47.1

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