ASTROSAT CZTI

Data Quality Report

Orbit 31670

Creation date: 2024-06-27T20:31:19.745213
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_056T01_9000004626_31670cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31670cztM0_level2_quad_clean.evt
Size (bytes)582,226,560110,145,600
Size555.3 MB 105.0 MB
Events in quadrant A3,437,281735,041
Events in quadrant B5,477,258741,377
Events in quadrant C4,239,930717,467
Events in quadrant D4,049,082699,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144612
B0208022
C0168382
D0163322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63381171.846008%
B63392513.959615%
C63394146.530999%
D63391231.940369%

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 8838 6340 0 0 0.00% 0.00%
B 8839 6341 27 27 0.31% 0.43%
C 8839 6341 108 108 1.22% 1.70%
D 8839 6341 25 25 0.28% 0.39%

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 13 254 12609 66.74 889 875 175.8
A 3 137 8154 41.4 889 875 175.8
A 0 226 7538 37.89 889 875 175.8
B 6 159 1773853 10893.98 881 860 162.7
B 0 190 66767 404.96 881 860 162.7
B 4 80 54202 327.75 881 860 162.7
C 0 10 394567 2023.56 851 857 194.6
C 10 22 205059 1049.54 851 857 194.6
C 14 238 136759 698.5 851 857 194.6
D 8 195 641150 3143.76 873 853 203.7
D 13 249 69956 339.28 873 853 203.7
D 2 234 26476 125.8 873 853 203.7

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