ASTROSAT CZTI

Data Quality Report

Orbit 34686

Creation date: 2022-02-26T19:27:31.931514
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/AS1A07_093T11_9000004964_34686cztM0_level2.evt modeM0/AS1A07_093T11_9000004964_34686cztM0_level2_quad_clean.evt
Size (bytes)209,206,08030,165,120
Size199.5 MB 28.8 MB
Events in quadrant A968,161205,357
Events in quadrant B2,227,025170,487
Events in quadrant C1,030,038204,823
Events in quadrant D1,976,734190,756

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040962
B078651
C041411
D071791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1937170.877646%
B193759130.511100%
C1937190.980898%
D1937643.304078%

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 3669 1938 9 9 0.25% 0.46%
B 3669 1937 424 424 11.56% 21.89%
C 3669 1938 13 13 0.35% 0.67%
D 3669 1938 36 36 0.98% 1.86%

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 36483 771.49 227 222 47.0
A 10 83 22037 464.14 227 222 47.0
A 9 143 11024 229.82 227 222 47.0
B 5 255 809906 21368.98 190 185 37.9
B 5 172 644570 17005.67 190 185 37.9
B 4 141 5874 150.14 190 185 37.9
C 15 214 84594 1629.87 218 219 51.8
C 0 10 62067 1194.72 218 219 51.8
C 14 67 13855 263.41 218 219 51.8
D 8 195 954954 17438.1 217 211 54.8
D 2 249 45511 827.39 217 211 54.8
D 10 199 32985 598.61 217 211 54.8

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