ASTROSAT CZTI

Data Quality Report

Orbit 03740

Creation date: 2024-06-27T14:33:05.495899
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/AS1G05_248T01_9000000486_03740cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03740cztM0_level2_quad_clean.evt
Size (bytes)576,123,84095,627,520
Size549.4 MB 91.2 MB
Events in quadrant A4,222,989593,168
Events in quadrant B4,930,585591,596
Events in quadrant C3,562,564591,072
Events in quadrant D4,201,583576,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180533
B0199422
C0162892
D0180672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78092483.175823%
B78092943.764887%
C7809620.793956%
D78091191.523883%

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 8269 7811 86 86 1.04% 1.10%
B 8269 7811 40 40 0.48% 0.51%
C 8269 7811 0 0 0.00% 0.00%
D 8269 7811 36 36 0.44% 0.46%

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 0 118 226547 1181.69 913 889 191.0
A 13 251 192226 1001.96 913 889 191.0
A 8 15 119031 618.67 913 889 191.0
B 0 173 662976 3659.01 926 902 180.9
B 15 204 460533 2540.19 926 902 180.9
B 14 167 84669 462.95 926 902 180.9
C 8 128 15448 69.11 898 901 210.5
C 12 4 12364 54.46 898 901 210.5
C 8 112 8636 36.75 898 901 210.5
D 1 20 539609 2470.98 894 866 218.0
D 13 223 62847 284.28 894 866 218.0
D 9 35 57806 261.16 894 866 218.0

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
Veto Counter