ASTROSAT CZTI

Data Quality Report

Orbit 20311

Creation date: 2024-06-27T18:13:44.939820
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_174T01_9000003008_20311cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20311cztM0_level2_quad_clean.evt
Size (bytes)544,550,40085,438,080
Size519.3 MB 81.5 MB
Events in quadrant A3,808,662531,446
Events in quadrant B3,465,752545,118
Events in quadrant C5,575,623513,283
Events in quadrant D3,178,992521,604

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157122
B0145411
C0208701
D0141171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68172183.197888%
B68171762.581781%
C68176008.801526%
D68171131.657621%

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 7297 6818 27 27 0.37% 0.40%
B 7297 6818 16 16 0.22% 0.23%
C 7297 6818 297 297 4.07% 4.36%
D 7297 6818 10 10 0.14% 0.15%

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 14 238 591180 3533.67 823 804 167.1
A 5 98 20045 115.17 823 804 167.1
A 8 205 17407 99.38 823 804 167.1
B 7 220 114711 721.11 817 797 158.0
B 4 142 40206 249.47 817 797 158.0
B 0 214 20938 127.5 817 797 158.0
C 3 9 2369991 12763.17 787 791 185.6
C 14 238 121463 650.07 787 791 185.6
C 0 207 14653 74.68 787 791 185.6
D 2 184 32353 157.89 816 792 199.9
D 2 234 25232 122.27 816 792 199.9
D 7 96 16962 80.9 816 792 199.9

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