ASTROSAT CZTI

Data Quality Report

Orbit 13469

Creation date: 2024-06-27T16:41:15.869921
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/AS1A04_103T01_9000001988_13469cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13469cztM0_level2_quad_clean.evt
Size (bytes)1,240,914,240247,285,440
Size1.2 GB 235.8 MB
Events in quadrant A8,918,7851,550,621
Events in quadrant B9,567,4811,579,126
Events in quadrant C8,897,2451,537,865
Events in quadrant D8,875,6801,476,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396835
B0410454
C0396644
D0405414

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19538500.255912%
B195381620.829153%
C19538630.322449%
D19538680.348040%

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 21715 19542 0 0 0.00% 0.00%
B 21715 19541 42 42 0.19% 0.21%
C 21715 19541 1 1 0.00% 0.01%
D 21715 19541 22 22 0.10% 0.11%

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 1 162 45783 93.21 2299 2241 467.2
A 0 226 20368 38.8 2299 2241 467.2
A 12 194 17139 31.89 2299 2241 467.2
B 4 48 252104 572.61 2299 2242 436.4
B 0 214 128371 289.05 2299 2242 436.4
B 3 64 99472 222.82 2299 2242 436.4
C 3 233 93467 175.61 2247 2261 519.4
C 13 61 16026 26.5 2247 2261 519.4
C 8 128 14810 24.16 2247 2261 519.4
D 8 195 222389 412.44 2226 2164 534.0
D 12 110 134498 247.84 2226 2164 534.0
D 2 234 64195 116.17 2226 2164 534.0

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