ASTROSAT CZTI

Data Quality Report

Orbit 20279

Creation date: 2024-06-27T18:14:04.805762
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/AS1A06_009T02_9000003006_20279cztM0_level2.evt modeM0/AS1A06_009T02_9000003006_20279cztM0_level2_quad_clean.evt
Size (bytes)466,107,84080,579,520
Size444.5 MB 76.8 MB
Events in quadrant A3,379,073503,766
Events in quadrant B3,380,650520,973
Events in quadrant C3,274,159501,260
Events in quadrant D3,662,841482,759

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135672
B0136172
C0131912
D0146962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6178731.181612%
B6177440.712320%
C6177590.955156%
D6177631.019913%

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 7558 6179 40 40 0.53% 0.65%
B 7557 6178 10 10 0.13% 0.16%
C 7557 6178 0 0 0.00% 0.00%
D 7557 6178 48 48 0.64% 0.78%

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 2 153918 948.01 814 798 161.5
A 14 238 42830 260.23 814 798 161.5
A 8 205 26341 158.14 814 798 161.5
B 7 220 63074 408.82 826 808 152.3
B 4 142 39891 256.61 826 808 152.3
B 12 17 18187 114.11 826 808 152.3
C 14 238 128303 687.56 804 812 185.4
C 3 233 9122 44.82 804 812 185.4
C 13 61 5552 25.56 804 812 185.4
D 1 52 591707 3084.12 802 781 191.6
D 2 234 32507 165.58 802 781 191.6
D 9 1 15732 78.03 802 781 191.6

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