ASTROSAT CZTI

Data Quality Report

Orbit 31213

Creation date: 2024-06-27T20:25:06.322319
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/AS1T04_019T01_9000004516_31213cztM0_level2.evt modeM0/AS1T04_019T01_9000004516_31213cztM0_level2_quad_clean.evt
Size (bytes)683,910,720111,288,960
Size652.2 MB 106.1 MB
Events in quadrant A3,799,754729,078
Events in quadrant B6,122,505719,935
Events in quadrant C4,372,999692,301
Events in quadrant D5,897,593694,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163025
B0236444
C0179194
D0229934

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76771782.318614%
B76773714.832617%
C76774175.431809%
D76772222.891755%

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 7862 7680 0 0 0.00% 0.00%
B 7862 7680 2 2 0.03% 0.03%
C 7862 7680 31 31 0.39% 0.40%
D 7862 7680 10 10 0.13% 0.13%

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 11799 54.09 985 966 200.3
A 3 137 10679 48.49 985 966 200.3
A 0 226 8296 36.6 985 966 200.3
B 6 159 2259391 11949.71 963 937 189.0
B 0 230 36793 189.72 963 937 189.0
B 10 247 24899 126.79 963 937 189.0
C 10 22 226569 1009.99 940 946 223.4
C 3 233 177921 792.22 940 946 223.4
C 14 238 150326 668.69 940 946 223.4
D 8 195 1973810 8671.66 956 936 227.5
D 2 72 284663 1247.11 956 936 227.5
D 12 218 36130 154.69 956 936 227.5

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