ASTROSAT CZTI

Data Quality Report

Orbit 44990

Creation date: 2024-06-27T23:08:48.768128
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_020T01_9000006040_44990cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_44990cztM0_level2_quad_clean.evt
Size (bytes)685,235,520121,109,760
Size653.5 MB 115.5 MB
Events in quadrant A8,864,858809,180
Events in quadrant B4,584,487833,992
Events in quadrant C3,562,150830,005
Events in quadrant D7,747,614648,993

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319665
B0190622
C0162222
D0284812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78333374.302311%
B78343394.327291%
C7834320.408476%
D7834125516.019913%

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 8704 7837 17 17 0.20% 0.22%
B 8704 7837 152 152 1.75% 1.94%
C 8704 7837 3 3 0.03% 0.04%
D 8704 7837 988 988 11.35% 12.61%

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 2658567 14275.35 883 861 186.2
A 0 247 2543124 13655.27 883 861 186.2
A 0 226 170012 908.56 883 861 186.2
B 0 189 537871 3024.23 885 857 177.6
B 5 255 254600 1428.97 885 857 177.6
B 15 35 88809 495.31 885 857 177.6
C 15 208 48140 226.15 881 885 209.0
C 14 254 38365 179.37 881 885 209.0
C 3 233 21851 100.34 881 885 209.0
D 13 249 2391171 11459.56 815 791 208.6
D 2 249 969262 4642.88 815 791 208.6
D 12 33 289258 1382.92 815 791 208.6

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