ASTROSAT CZTI

Data Quality Report

Orbit 21001

Creation date: 2024-06-27T18:22:13.090611
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_072T04_9000003094_21001cztM0_level2.evt modeM0/AS1A05_072T04_9000003094_21001cztM0_level2_quad_clean.evt
Size (bytes)428,587,20090,766,080
Size408.7 MB 86.6 MB
Events in quadrant A3,070,992589,340
Events in quadrant B3,317,185604,104
Events in quadrant C3,135,838568,201
Events in quadrant D3,029,302549,222

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130182
B0137892
C0131442
D0132002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A627190.143518%
B6271360.574071%
C6271440.701642%
D6271140.223250%

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 7566 6272 0 0 0.00% 0.00%
B 7566 6272 3 3 0.04% 0.05%
C 7566 6272 0 0 0.00% 0.00%
D 7566 6272 6 6 0.08% 0.10%

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 0 226 6999 38.94 799 783 159.6
A 3 137 6127 33.48 799 783 159.6
A 12 194 5588 30.1 799 783 159.6
B 7 220 66854 437.49 806 787 151.0
B 0 189 31869 205.82 806 787 151.0
B 0 229 30956 199.78 806 787 151.0
C 14 238 121769 676.69 771 779 178.8
C 13 61 5377 25.72 771 779 178.8
C 3 233 3281 13.99 771 779 178.8
D 15 0 65025 346.5 770 750 185.5
D 2 234 27291 143.08 770 750 185.5
D 1 52 14639 74.88 770 750 185.5

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