ASTROSAT CZTI

Data Quality Report

Orbit 20335

Creation date: 2024-06-27T18:14:00.927318
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_20335cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20335cztM0_level2_quad_clean.evt
Size (bytes)481,582,080110,168,640
Size459.3 MB 105.1 MB
Events in quadrant A3,073,015734,025
Events in quadrant B3,378,504761,272
Events in quadrant C3,220,890737,201
Events in quadrant D4,496,021675,992

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129762
B0140062
C0134062
D0173612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6134140.228236%
B6134761.238996%
C6134681.108575%
D61345438.852299%

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 7429 6135 0 0 0.00% 0.00%
B 7429 6135 20 20 0.27% 0.33%
C 7429 6135 0 0 0.00% 0.00%
D 7429 6135 374 374 5.03% 6.10%

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 13 254 7076 39.63 797 781 158.8
A 0 226 6874 38.36 797 781 158.8
A 3 137 6074 33.32 797 781 158.8
B 7 220 126673 846.86 802 783 148.7
B 4 80 52914 350.68 802 783 148.7
B 0 198 18755 120.89 802 783 148.7
C 14 238 125893 683.77 791 797 183.0
C 3 233 7183 34.91 791 797 183.0
C 1 16 5724 26.93 791 797 183.0
D 1 52 1572751 8599.16 758 738 182.8
D 2 16 49821 268.49 758 738 182.8
D 2 234 21902 115.77 758 738 182.8

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