ASTROSAT CZTI

Data Quality Report

Orbit 26620

Creation date: 2024-06-27T19:31:05.099418
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/AS1A09_145T01_9000003848_26620cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26620cztM0_level2_quad_clean.evt
Size (bytes)626,431,68082,319,040
Size597.4 MB 78.5 MB
Events in quadrant A3,912,357528,521
Events in quadrant B4,540,789528,195
Events in quadrant C3,736,216507,727
Events in quadrant D6,343,538475,706

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158410
B0181810
C0150170
D0232430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6493961.478515%
B64921702.618608%
C64921312.017868%
D649288513.632163%

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 7808 6494 2 2 0.03% 0.03%
B 7807 6493 19 19 0.24% 0.29%
C 7807 6493 4 4 0.05% 0.06%
D 7807 6493 769 769 9.85% 11.84%

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 13 262828 1422.89 938 924 184.1
A 5 168 26349 138.13 938 924 184.1
A 13 254 11098 55.27 938 924 184.1
B 0 189 835825 4851.02 916 898 172.1
B 5 172 66685 382.23 916 898 172.1
B 15 32 20628 114.63 916 898 172.1
C 14 238 147203 712.22 889 897 205.4
C 3 233 78330 376.94 889 897 205.4
C 15 208 43750 208.61 889 897 205.4
D 1 52 1979097 9545.18 862 846 207.3
D 7 80 918430 4427.4 862 846 207.3
D 2 250 117844 564.52 862 846 207.3

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