ASTROSAT CZTI

Data Quality Report

Orbit 19945

Creation date: 2024-06-27T18:09:04.139003
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_160T01_9000002970_19945cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19945cztM0_level2_quad_clean.evt
Size (bytes)662,232,96066,689,280
Size631.6 MB 63.6 MB
Events in quadrant A5,537,269405,745
Events in quadrant B3,781,947407,327
Events in quadrant C4,551,847386,208
Events in quadrant D5,757,055378,279

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207192
B0154192
C0179152
D0213122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A632685113.452419%
B63261422.244704%
C63262914.600063%
D632691414.448309%

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 7611 6326 637 637 8.37% 10.07%
B 7611 6326 18 18 0.24% 0.28%
C 7611 6326 73 73 0.96% 1.15%
D 7610 6325 792 792 10.41% 12.52%

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 14 238 2181687 12624.35 873 860 172.7
A 0 226 7599 39.01 873 860 172.7
A 3 137 6371 31.9 873 860 172.7
B 7 220 65561 379.95 907 888 170.2
B 0 190 64482 373.61 907 888 170.2
B 0 197 57668 333.58 907 888 170.2
C 4 254 523421 2609.88 868 877 200.2
C 3 233 320037 1594.06 868 877 200.2
C 14 238 138551 687.62 868 877 200.2
D 1 20 1724947 8373.55 861 840 205.9
D 1 52 716066 3473.67 861 840 205.9
D 2 234 31132 147.12 861 840 205.9

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