ASTROSAT CZTI

Data Quality Report

Orbit 08181

Creation date: 2024-06-27T15:29:08.320411
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/AS1A03_036T01_9000001128_08181cztM0_level2.evt modeM0/AS1A03_036T01_9000001128_08181cztM0_level2_quad_clean.evt
Size (bytes)480,366,72098,352,000
Size458.1 MB 93.8 MB
Events in quadrant A3,197,123637,826
Events in quadrant B4,125,674600,698
Events in quadrant C3,162,279632,216
Events in quadrant D3,577,327610,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146254
B0172463
C0145693
D0158313

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7136230.322309%
B71364446.221973%
C713690.126121%
D7137470.658540%

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 7691 7138 0 0 0.00% 0.00%
B 7691 7138 317 317 4.12% 4.44%
C 7691 7138 0 0 0.00% 0.00%
D 7692 7139 35 35 0.46% 0.49%

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 15 24763 142.67 823 802 168.0
A 0 226 7808 41.71 823 802 168.0
A 12 194 7440 39.52 823 802 168.0
B 0 213 923677 6121.29 789 770 150.8
B 10 16 45574 297.17 789 770 150.8
B 4 81 32117 207.91 789 770 150.8
C 1 3 6304 29.43 809 811 186.7
C 13 61 6152 28.61 809 811 186.7
C 7 159 2368 8.34 809 811 186.7
D 1 52 190141 961.2 806 783 197.0
D 2 14 134284 677.67 806 783 197.0
D 12 227 113577 572.55 806 783 197.0

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