ASTROSAT CZTI

Data Quality Report

Orbit 36244

Creation date: 2022-06-13T13:11:22.810350
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/AS1A10_071T34_9000005178_36244cztM0_level2.evt modeM0/AS1A10_071T34_9000005178_36244cztM0_level2_quad_clean.evt
Size (bytes)458,925,12073,163,520
Size437.7 MB 69.8 MB
Events in quadrant A2,665,244475,542
Events in quadrant B3,468,577474,150
Events in quadrant C2,858,621469,515
Events in quadrant D4,543,994422,787

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113273
B0137592
C0116602
D0170372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A532690.168982%
B53262073.886594%
C5326430.807360%
D532654710.270372%

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 7179 5327 1 1 0.01% 0.02%
B 7179 5327 144 144 2.01% 2.70%
C 7179 5327 24 24 0.33% 0.45%
D 7179 5327 537 537 7.48% 10.08%

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 10 83 184339 1430.96 637 625 128.4
A 9 143 10808 79.32 637 625 128.4
A 13 254 9716 70.81 637 625 128.4
B 5 172 650641 5462.21 628 611 119.0
B 5 236 252479 2116.45 628 611 119.0
B 0 190 33907 279.78 628 611 119.0
C 15 214 220523 1508.84 624 629 145.7
C 0 10 197082 1347.99 624 629 145.7
C 6 244 7114 44.5 624 629 145.7
D 12 6 1634281 11296.31 596 579 144.6
D 12 235 158055 1088.88 596 579 144.6
D 13 171 123475 849.77 596 579 144.6

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