ASTROSAT CZTI

Data Quality Report

Orbit 23859

Creation date: 2024-06-27T18:59:29.616023
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/AS1A07_149T01_9000003534_23859cztM0_level2.evt modeM0/AS1A07_149T01_9000003534_23859cztM0_level2_quad_clean.evt
Size (bytes)549,846,720108,190,080
Size524.4 MB 103.2 MB
Events in quadrant A3,773,038694,531
Events in quadrant B3,851,315703,919
Events in quadrant C3,827,423670,406
Events in quadrant D4,658,188652,539

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165863
B0166833
C0166583
D0190923

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79792392.995363%
B79803063.834586%
C79803083.859649%
D79803304.135338%

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 8449 7982 0 0 0.00% 0.00%
B 8450 7983 1 1 0.01% 0.01%
C 8450 7983 3 3 0.04% 0.04%
D 8450 7983 103 103 1.22% 1.29%

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 2 250 18378 89.0 970 947 195.9
A 6 16 15367 73.63 970 947 195.9
A 13 254 13264 62.89 970 947 195.9
B 12 111 22867 118.49 971 946 185.0
B 11 111 19678 101.25 971 946 185.0
B 15 32 17474 89.34 971 946 185.0
C 14 238 144710 660.51 930 931 217.7
C 0 207 24772 109.52 930 931 217.7
C 7 247 15416 66.54 930 931 217.7
D 1 52 576658 2523.25 937 906 228.2
D 8 195 316891 1384.81 937 906 228.2
D 12 233 154303 672.27 937 906 228.2

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