ASTROSAT CZTI

Data Quality Report

Orbit 36627

Creation date: 2024-06-27T21:29:23.282706
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_073T02_9000005226_36627cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36627cztM0_level2_quad_clean.evt
Size (bytes)380,957,76047,900,160
Size363.3 MB 45.7 MB
Events in quadrant A1,454,608347,883
Events in quadrant B3,588,754277,365
Events in quadrant C1,514,777345,986
Events in quadrant D4,788,524278,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061150
B0126390
C062240
D0161410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2798250.893495%
B279880928.913510%
C2798281.000715%
D2798106738.134382%

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 2798 2798 16 16 0.57% 0.57%
B 2798 2798 600 600 21.44% 21.44%
C 2798 2798 18 18 0.64% 0.64%
D 2798 2798 1001 1001 35.78% 35.78%

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 15 223 111294 1671.59 320 314 66.4
A 10 83 83619 1254.74 320 314 66.4
A 9 143 8332 120.77 320 314 66.4
B 5 200 2335526 45675.16 257 250 51.1
B 5 255 77114 1503.37 257 250 51.1
B 15 85 63838 1243.7 257 250 51.1
C 0 10 151072 2092.46 304 306 72.1
C 15 214 118749 1643.85 304 306 72.1
C 14 254 34211 470.56 304 306 72.1
D 12 235 3008525 44168.88 273 265 68.1
D 12 17 385355 5654.1 273 265 68.1
D 13 249 148225 2172.43 273 265 68.1

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