ASTROSAT CZTI

Data Quality Report

Orbit 32018

Creation date: 2024-06-27T20:35:18.032315
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_109T01_9000004678_32018cztM0_level2.evt modeM0/AS1A10_109T01_9000004678_32018cztM0_level2_quad_clean.evt
Size (bytes)642,237,12080,919,360
Size612.5 MB 77.2 MB
Events in quadrant A3,691,398520,994
Events in quadrant B5,487,693516,250
Events in quadrant C4,128,697486,151
Events in quadrant D5,699,413469,182

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147642
B0203852
C0165782
D0217102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6568671.020097%
B65681802.740560%
C65683465.267966%
D65681051.598660%

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 9133 6568 0 0 0.00% 0.00%
B 9133 6568 6 6 0.07% 0.09%
C 9133 6568 7 7 0.08% 0.11%
D 9133 6568 27 27 0.30% 0.41%

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 11675 57.1 956 941 188.0
A 3 137 8466 40.03 956 941 188.0
A 0 226 7840 36.7 956 941 188.0
B 6 159 1690316 9688.26 940 919 174.4
B 0 190 44742 251.31 940 919 174.4
B 10 245 30194 167.88 940 919 174.4
C 14 238 205244 1006.93 883 890 202.9
C 3 233 197768 970.09 883 890 202.9
C 10 22 83892 408.98 883 890 202.9
D 8 195 2183816 10386.55 898 875 210.2
D 2 250 60606 284.2 898 875 210.2
D 12 218 46230 215.8 898 875 210.2

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