ASTROSAT CZTI

Data Quality Report

Orbit 26165

Creation date: 2024-06-27T19:25:34.436831
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/AS1A09_138T04_9000003776_26165cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26165cztM0_level2_quad_clean.evt
Size (bytes)452,649,60084,458,880
Size431.7 MB 80.5 MB
Events in quadrant A3,157,069534,303
Events in quadrant B3,211,985541,937
Events in quadrant C3,398,199513,242
Events in quadrant D3,496,813511,902

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134770
B0135630
C0140610
D0147410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6539390.596421%
B6539500.764643%
C65381111.697767%
D65381121.713062%

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 7459 6539 0 0 0.00% 0.00%
B 7459 6539 0 0 0.00% 0.00%
C 7457 6537 30 30 0.40% 0.46%
D 7458 6538 80 80 1.07% 1.22%

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 6 16 20281 119.33 808 790 163.3
A 0 13 14545 84.21 808 790 163.3
A 13 254 11550 65.88 808 790 163.3
B 7 219 22473 140.41 806 786 154.4
B 12 111 18827 116.81 806 786 154.4
B 11 111 16829 103.87 806 786 154.4
C 2 16 182662 996.11 776 779 182.6
C 14 238 124940 679.99 776 779 182.6
C 3 233 57617 311.28 776 779 182.6
D 1 52 354674 1890.42 784 762 187.2
D 12 233 107264 568.88 784 762 187.2
D 2 234 29900 155.64 784 762 187.2

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