ASTROSAT CZTI

Data Quality Report

Orbit 20687

Creation date: 2024-06-27T18:18:22.332755
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_229T02_9000003060_20687cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20687cztM0_level2_quad_clean.evt
Size (bytes)490,947,84099,702,720
Size468.2 MB 95.1 MB
Events in quadrant A3,271,433653,724
Events in quadrant B3,589,677651,533
Events in quadrant C3,292,105627,990
Events in quadrant D4,247,793606,654

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141811
B0151311
C0142131
D0172111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6880490.712209%
B6881721.046360%
C6881600.871966%
D68802333.386628%

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 7595 6881 0 0 0.00% 0.00%
B 7596 6882 9 9 0.12% 0.13%
C 7596 6882 0 0 0.00% 0.00%
D 7595 6881 179 179 2.36% 2.60%

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 5 16 9672 51.59 848 831 171.4
A 0 226 7360 38.1 848 831 171.4
A 3 137 6595 33.63 848 831 171.4
B 7 220 167230 1030.88 843 821 161.4
B 0 190 34305 207.43 843 821 161.4
B 0 197 31241 188.45 843 821 161.4
C 14 238 127156 672.68 803 809 187.8
C 3 233 22318 114.51 803 809 187.8
C 7 247 10722 52.78 803 809 187.8
D 1 52 739084 3718.07 811 788 198.6
D 7 38 230877 1158.73 811 788 198.6
D 12 227 94714 473.01 811 788 198.6

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