ASTROSAT CZTI

Data Quality Report

Orbit 28260

Creation date: 2024-06-27T19:49:45.903316
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_067T01_9000004076_28260cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28260cztM0_level2_quad_clean.evt
Size (bytes)561,381,12083,770,560
Size535.4 MB 79.9 MB
Events in quadrant A3,479,514522,196
Events in quadrant B3,677,235524,832
Events in quadrant C3,776,485498,315
Events in quadrant D5,578,778488,674

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150030
B0154180
C0156860
D0213870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72231892.616641%
B72242152.976190%
C72242773.834441%
D72245077.018272%

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 7338 7223 0 0 0.00% 0.00%
B 7339 7224 3 3 0.04% 0.04%
C 7339 7224 6 6 0.08% 0.08%
D 7339 7224 278 278 3.79% 3.85%

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 12020 60.6 901 883 183.8
A 3 137 9236 45.45 901 883 183.8
A 0 226 7673 36.95 901 883 183.8
B 10 245 118715 678.0 886 863 173.8
B 10 246 32459 181.77 886 863 173.8
B 4 200 26079 145.07 886 863 173.8
C 3 233 289452 1416.36 857 860 203.8
C 14 238 135937 662.94 857 860 203.8
C 9 54 6394 27.16 857 860 203.8
D 1 52 1529963 7388.35 858 833 207.0
D 5 222 251213 1209.77 858 833 207.0
D 8 195 188394 906.24 858 833 207.0

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter