ASTROSAT CZTI

Data Quality Report

Orbit 41354

Creation date: 2024-06-27T22:28:03.386081
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/AS1T05_105T01_9000005658_41354cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41354cztM0_level2_quad_clean.evt
Size (bytes)396,446,400100,512,000
Size378.1 MB 95.9 MB
Events in quadrant A3,173,253692,550
Events in quadrant B2,722,541705,937
Events in quadrant C3,562,706644,495
Events in quadrant D4,750,204581,467

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130913
B0122412
C0141102
D0182892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5995150.250209%
B5995170.283570%
C59952734.553795%
D59954567.606339%

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 9250 5997 6 6 0.06% 0.10%
B 9249 5995 3 3 0.03% 0.05%
C 9250 5995 253 253 2.74% 4.22%
D 9250 5996 457 457 4.94% 7.62%

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 543205 3916.41 670 657 138.5
A 12 189 24536 172.37 670 657 138.5
A 13 248 7969 52.78 670 657 138.5
B 0 190 49635 377.64 666 648 129.7
B 5 255 19856 148.07 666 648 129.7
B 0 189 17396 129.11 666 648 129.7
C 0 10 825662 5537.46 633 637 149.0
C 15 214 246451 1649.87 633 637 149.0
C 14 67 16906 109.2 633 637 149.0
D 12 217 1228380 7897.99 631 612 155.5
D 1 52 341012 2189.73 631 612 155.5
D 13 249 340269 2184.95 631 612 155.5

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