ASTROSAT CZTI

Data Quality Report

Orbit 23641

Creation date: 2024-06-27T18:57:06.769368
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_147T01_9000003490_23641cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23641cztM0_level2_quad_clean.evt
Size (bytes)513,768,96085,743,360
Size490.0 MB 81.8 MB
Events in quadrant A3,403,511531,871
Events in quadrant B4,255,767540,120
Events in quadrant C3,418,062522,984
Events in quadrant D4,001,738508,651

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145921
B0170391
C0145821
D0166341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70781371.935575%
B70783064.323255%
C70781732.444193%
D70782403.390788%

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 7403 7078 0 0 0.00% 0.00%
B 7403 7078 115 115 1.55% 1.62%
C 7403 7078 2 2 0.03% 0.03%
D 7403 7078 133 133 1.80% 1.88%

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 12 96 26973 146.38 876 856 178.4
A 13 254 11443 59.34 876 856 178.4
A 3 137 8023 40.17 876 856 178.4
B 3 64 343739 2037.57 861 839 168.3
B 0 229 271979 1611.16 861 839 168.3
B 0 189 205228 1214.51 861 839 168.3
C 14 238 131508 662.35 836 842 197.3
C 10 9 14750 70.5 836 842 197.3
C 13 61 5928 25.78 836 842 197.3
D 12 233 740728 3584.35 846 821 206.4
D 2 234 28904 136.04 846 821 206.4
D 1 52 22659 105.79 846 821 206.4

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