ASTROSAT CZTI

Data Quality Report

Orbit 02481

Creation date: 2024-06-27T14:18:23.865552
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/AS1G02_018T06_9000000370_02481cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02481cztM0_level2_quad_clean.evt
Size (bytes)473,276,16099,241,920
Size451.4 MB 94.6 MB
Events in quadrant A3,407,243615,123
Events in quadrant B3,592,312628,361
Events in quadrant C3,477,851622,862
Events in quadrant D3,335,687607,083

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156672
B0160041
C0158291
D0158361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7653470.614138%
B7653791.032275%
C7653340.444270%
D7653200.261335%

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 7983 7654 0 0 0.00% 0.00%
B 7983 7654 12 12 0.15% 0.16%
C 7983 7654 0 0 0.00% 0.00%
D 7983 7654 1 1 0.01% 0.01%

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 14 63 11251 57.06 880 860 182.1
A 12 194 9992 50.15 880 860 182.1
A 0 226 9380 46.79 880 860 182.1
B 4 48 44973 254.76 892 871 173.1
B 0 87 40396 228.32 892 871 173.1
B 10 244 35591 200.57 892 871 173.1
C 8 112 31933 155.24 853 855 200.2
C 10 65 25848 124.84 853 855 200.2
C 2 53 15650 73.9 853 855 200.2
D 5 172 60234 293.35 847 827 202.5
D 2 184 40139 194.12 847 827 202.5
D 15 194 15473 72.32 847 827 202.5

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