ASTROSAT CZTI

Data Quality Report

Orbit 08238

Creation date: 2024-06-27T15:30:01.609389
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/AS1T01_164T01_9000001140_08238cztM0_level2.evt modeM0/AS1T01_164T01_9000001140_08238cztM0_level2_quad_clean.evt
Size (bytes)448,830,72078,773,760
Size428.0 MB 75.1 MB
Events in quadrant A3,361,563483,033
Events in quadrant B3,521,995488,777
Events in quadrant C3,111,223485,089
Events in quadrant D3,143,569462,356

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01421234
B01470835
C01375033
D01405051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6687681.016898%
B6686791.181573%
C6687210.314042%
D6678420.628931%

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 7543 6700 2 2 0.03% 0.03%
B 7543 6702 7 7 0.09% 0.10%
C 7543 6700 0 0 0.00% 0.00%
D 7543 6699 8 8 0.11% 0.12%

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 185567 1097.24 819 804 168.4
A 0 254 14019 78.48 819 804 168.4
A 0 226 7799 41.54 819 804 168.4
B 11 51 167758 1061.83 823 806 157.2
B 10 16 90816 572.47 823 806 157.2
B 0 219 23753 145.94 823 806 157.2
C 13 61 6082 28.39 797 804 185.9
C 3 202 1913 5.96 797 804 185.9
C 3 233 1853 5.64 797 804 185.9
D 13 105 65530 331.15 796 773 195.6
D 1 52 35709 178.65 796 773 195.6
D 2 234 25644 127.18 796 773 195.6

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