ASTROSAT CZTI

Data Quality Report

Orbit 07451

Creation date: 2024-06-27T15:19:55.042990
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/AS1A02_108T01_9000001024_07451cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07451cztM0_level2_quad_clean.evt
Size (bytes)542,234,88066,983,040
Size517.1 MB 63.9 MB
Events in quadrant A3,346,777391,467
Events in quadrant B3,478,593396,817
Events in quadrant C4,125,686389,493
Events in quadrant D5,000,917367,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145063
B0147162
C0168082
D0194702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69281051.515589%
B69281111.602194%
C69281041.501155%
D69283665.282910%

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 9023 6929 0 0 0.00% 0.00%
B 9023 6929 3 3 0.03% 0.04%
C 9023 6929 9 9 0.10% 0.13%
D 9023 6929 249 249 2.76% 3.59%

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 14 11573 61.3 863 846 175.0
A 0 226 8384 43.08 863 846 175.0
A 3 1 7963 40.67 863 846 175.0
B 0 214 115074 695.21 864 843 164.3
B 12 111 16776 96.97 864 843 164.3
B 11 111 13431 76.61 864 843 164.3
C 9 68 845460 4358.16 836 839 193.8
C 1 16 16172 79.12 836 839 193.8
C 13 61 6616 29.81 836 839 193.8
D 13 105 1161340 5711.62 831 805 203.2
D 14 34 244360 1198.66 831 805 203.2
D 1 20 239946 1176.94 831 805 203.2

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