ASTROSAT CZTI

Data Quality Report

Orbit 18948

Creation date: 2024-06-27T17:56:55.401095
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/AS1T03_090T01_9000002822_18948cztM0_level2.evt modeM0/AS1T03_090T01_9000002822_18948cztM0_level2_quad_clean.evt
Size (bytes)664,994,88087,750,720
Size634.2 MB 83.7 MB
Events in quadrant A3,706,302573,878
Events in quadrant B4,485,057573,571
Events in quadrant C3,323,157574,997
Events in quadrant D8,198,062493,802

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147292
B0172732
C0136392
D0287556

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63032063.268285%
B63034336.869745%
C63031662.633667%
D6302171027.134243%

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 7583 6303 55 55 0.73% 0.87%
B 7583 6304 175 175 2.31% 2.78%
C 7583 6304 0 0 0.00% 0.00%
D 7582 6303 1078 1078 14.22% 17.10%

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 14 235 469681 2852.26 837 821 164.4
A 13 254 8402 46.12 837 821 164.4
A 0 226 7366 39.81 837 821 164.4
B 3 112 1029626 6775.63 825 806 151.8
B 7 220 123809 810.08 825 806 151.8
B 0 189 60210 391.22 825 806 151.8
C 14 238 131025 701.46 816 822 185.6
C 3 233 11590 58.01 816 822 185.6
C 13 61 5973 27.75 816 822 185.6
D 7 238 4295274 23600.36 760 738 182.0
D 12 218 732672 4022.3 760 738 182.0
D 12 233 136435 745.71 760 738 182.0

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