ASTROSAT CZTI

Data Quality Report

Orbit 20303

Creation date: 2024-06-27T18:13:38.936332
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_20303cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20303cztM0_level2_quad_clean.evt
Size (bytes)544,806,72093,864,960
Size519.6 MB 89.5 MB
Events in quadrant A3,226,180616,722
Events in quadrant B3,267,907628,032
Events in quadrant C3,162,462605,822
Events in quadrant D6,402,553539,142

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135202
B0138792
C0134362
D0233842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6489410.631838%
B6489761.171213%
C6489731.124981%
D6489126519.494529%

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 7564 6490 0 0 0.00% 0.00%
B 7564 6490 8 8 0.11% 0.12%
C 7564 6490 0 0 0.00% 0.00%
D 7564 6489 930 930 12.30% 14.33%

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 8 205 75332 459.36 798 780 162.3
A 12 96 45317 274.42 798 780 162.3
A 11 29 20702 122.75 798 780 162.3
B 7 220 45783 296.5 799 779 151.8
B 0 197 26026 166.34 799 779 151.8
B 12 111 18362 115.84 799 779 151.8
C 14 238 122899 670.88 775 780 182.0
C 3 233 10452 53.13 775 780 182.0
C 0 207 7466 36.73 775 780 182.0
D 1 52 3779257 22877.18 681 664 165.2
D 2 234 34241 203.29 681 664 165.2
D 7 96 14919 86.31 681 664 165.2

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