ASTROSAT CZTI

Data Quality Report

Orbit 30143

Creation date: 2024-06-27T20:11:27.437414
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/AS1A10_097T03_9000004336_30143cztM0_level2.evt modeM0/AS1A10_097T03_9000004336_30143cztM0_level2_quad_clean.evt
Size (bytes)703,972,80076,426,560
Size671.4 MB 72.9 MB
Events in quadrant A3,582,610473,125
Events in quadrant B5,347,450472,330
Events in quadrant C7,772,207416,871
Events in quadrant D4,141,359460,350

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
A0151901
B0213021
C0281641
D0165111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70551482.097803%
B70551191.686747%
C7055116716.541460%
D70562133.018707%

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 7455 7056 46 46 0.62% 0.65%
B 7455 7055 1 1 0.01% 0.01%
C 7455 7055 144 144 1.93% 2.04%
D 7456 7057 133 133 1.78% 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 0 13 284883 1651.08 851 832 172.0
A 13 254 13351 72.77 851 832 172.0
A 8 192 11833 63.94 851 832 172.0
B 6 159 2026613 12604.93 838 817 160.7
B 12 111 20100 119.98 838 817 160.7
B 11 111 18380 109.28 838 817 160.7
C 3 233 4294677 23525.02 770 774 182.5
C 14 238 260149 1421.04 770 774 182.5
C 14 254 184464 1006.38 770 774 182.5
D 13 104 382722 1863.05 822 801 205.0
D 8 195 358426 1744.53 822 801 205.0
D 12 33 59757 287.59 822 801 205.0

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