ASTROSAT CZTI

Data Quality Report

Orbit 44652

Creation date: 2024-06-27T23:04:56.635565
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/AS1A13_072T01_9000006008_44652cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44652cztM0_level2_quad_clean.evt
Size (bytes)513,259,200123,157,440
Size489.5 MB 117.5 MB
Events in quadrant A6,224,878820,164
Events in quadrant B3,493,553854,815
Events in quadrant C3,569,068804,743
Events in quadrant D5,109,480710,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247920
B0161320
C0164690
D0208330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77561732.230531%
B7756420.541516%
C7756130.167612%
D77563814.912326%

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 7756 7756 69 69 0.89% 0.89%
B 7756 7756 1 1 0.01% 0.01%
C 7756 7756 4 4 0.05% 0.05%
D 7756 7756 319 319 4.11% 4.11%

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 1985732 11246.95 850 831 176.5
A 15 223 707654 4005.04 850 831 176.5
A 13 248 151958 856.32 850 831 176.5
B 0 183 58116 346.31 846 819 165.5
B 0 219 32697 192.67 846 819 165.5
B 12 111 21912 127.49 846 819 165.5
C 12 2 223867 1155.04 825 829 193.1
C 14 254 49282 250.92 825 829 193.1
C 2 14 34971 176.81 825 829 193.1
D 13 249 1283462 6336.24 807 780 202.4
D 2 249 285252 1405.25 807 780 202.4
D 1 52 157411 773.73 807 780 202.4

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