ASTROSAT CZTI

Data Quality Report

Orbit 17397

Creation date: 2024-06-27T17:35:59.784051
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/AS1T03_030T01_9000002574_17397cztM0_level2.evt modeM0/AS1T03_030T01_9000002574_17397cztM0_level2_quad_clean.evt
Size (bytes)507,096,000110,695,680
Size483.6 MB 105.6 MB
Events in quadrant A3,348,095757,682
Events in quadrant B3,505,362759,841
Events in quadrant C3,422,042704,440
Events in quadrant D4,659,863696,236

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139332
B0143692
C0139172
D0180902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62271071.718323%
B62271292.071624%
C62271282.055564%
D62271672.681869%

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 7517 6227 0 0 0.00% 0.00%
B 7517 6227 21 21 0.28% 0.34%
C 7517 6227 0 0 0.00% 0.00%
D 7517 6227 72 72 0.96% 1.16%

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 0 226 7868 40.85 870 855 171.7
A 12 194 6346 31.98 870 855 171.7
A 3 137 5807 28.84 870 855 171.7
B 7 220 85737 530.07 857 838 160.2
B 0 197 18553 110.6 857 838 160.2
B 12 111 18046 107.44 857 838 160.2
C 3 233 129965 698.36 804 810 184.9
C 14 238 128381 689.8 804 810 184.9
C 5 218 28763 151.15 804 810 184.9
D 1 52 1153443 5754.03 831 810 200.3
D 13 232 158950 789.45 831 810 200.3
D 11 176 89895 444.72 831 810 200.3

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