ASTROSAT CZTI

Data Quality Report

Orbit 18416

Creation date: 2024-06-27T17:49:33.895003
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/AS1A05_199T01_9000002732_18416cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18416cztM0_level2_quad_clean.evt
Size (bytes)526,317,12095,310,720
Size501.9 MB 90.9 MB
Events in quadrant A4,024,874589,477
Events in quadrant B3,819,924601,988
Events in quadrant C3,661,205581,135
Events in quadrant D3,903,435570,771

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170512
B0163862
C0160842
D0167762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78042533.241927%
B78042523.229113%
C78032423.101371%
D78032092.678457%

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 7999 7805 15 15 0.19% 0.19%
B 7999 7805 1 1 0.01% 0.01%
C 7998 7804 0 0 0.00% 0.00%
D 7998 7804 34 34 0.43% 0.44%

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 15 174 339855 1755.76 943 919 193.0
A 4 2 42794 216.92 943 919 193.0
A 0 254 12807 61.58 943 919 193.0
B 12 18 65188 347.97 945 918 184.7
B 0 189 28842 151.19 945 918 184.7
B 3 64 25064 130.73 945 918 184.7
C 14 238 137824 649.52 900 904 210.8
C 3 233 15398 68.76 900 904 210.8
C 13 61 6278 25.49 900 904 210.8
D 1 52 131938 592.83 914 885 221.1
D 7 238 114937 515.92 914 885 221.1
D 14 34 91233 408.7 914 885 221.1

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