ASTROSAT CZTI

Data Quality Report

Orbit 19811

Creation date: 2024-06-27T18:07:22.958275
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/AS1C04_009T06_9000002960_19811cztM0_level2.evt modeM0/AS1C04_009T06_9000002960_19811cztM0_level2_quad_clean.evt
Size (bytes)529,902,720120,888,000
Size505.4 MB 115.3 MB
Events in quadrant A2,967,193831,008
Events in quadrant B3,494,204834,437
Events in quadrant C3,095,230812,484
Events in quadrant D6,060,185739,589

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131231
B0146141
C0134222
D0223771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6361450.707436%
B6362681.068846%
C6361811.273385%
D636191214.337368%

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 7406 6361 1 1 0.01% 0.02%
B 7407 6362 16 16 0.22% 0.25%
C 7406 6361 6 6 0.08% 0.09%
D 7406 6361 721 721 9.74% 11.33%

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 5 16 18748 117.36 765 749 153.4
A 0 226 6698 38.79 765 749 153.4
A 12 194 5732 32.49 765 749 153.4
B 10 245 251778 1756.79 761 743 142.9
B 0 197 74541 516.45 761 743 142.9
B 7 220 47173 324.93 761 743 142.9
C 14 238 115177 663.99 738 742 172.3
C 0 207 70277 403.46 738 742 172.3
C 3 233 32882 186.49 738 742 172.3
D 1 52 2517217 14656.55 708 687 171.7
D 12 218 149978 869.49 708 687 171.7
D 7 38 145416 842.92 708 687 171.7

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