ASTROSAT CZTI

Data Quality Report

Orbit 16940

Creation date: 2024-06-27T17:29:48.589109
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/AS1A05_206T01_9000002518_16940cztM0_level2.evt modeM0/AS1A05_206T01_9000002518_16940cztM0_level2_quad_clean.evt
Size (bytes)262,465,92038,983,680
Size250.3 MB 37.2 MB
Events in quadrant A2,409,496227,706
Events in quadrant B1,696,116247,046
Events in quadrant C1,949,250239,557
Events in quadrant D1,676,041239,219

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092631
B069661
C078911
D070041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A318337211.687088%
B31831364.272699%
C31831434.492617%
D3183832.607603%

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 3469 3185 172 172 4.96% 5.40%
B 3469 3185 8 8 0.23% 0.25%
C 3469 3185 1 1 0.03% 0.03%
D 3469 3185 4 4 0.12% 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 15 174 906099 11261.68 389 377 80.4
A 0 23 5728 66.53 389 377 80.4
A 0 226 3779 42.29 389 377 80.4
B 3 64 35523 443.41 398 386 79.2
B 6 36 19118 236.39 398 386 79.2
B 0 219 18936 234.09 398 386 79.2
C 3 233 360769 3907.2 388 388 92.2
C 14 238 59299 638.71 388 388 92.2
C 14 225 8390 86.76 388 388 92.2
D 1 52 85602 870.22 399 386 97.9
D 15 0 27300 274.85 399 386 97.9
D 10 199 17239 172.1 399 386 97.9

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