ASTROSAT CZTI

Data Quality Report

Orbit 18909

Creation date: 2024-06-27T17:56:25.545817
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_163T01_9000002820_18909cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18909cztM0_level2_quad_clean.evt
Size (bytes)1,064,036,16067,749,120
Size1014.7 MB 64.6 MB
Events in quadrant A14,807,855226,456
Events in quadrant B8,079,396406,279
Events in quadrant C3,762,378447,496
Events in quadrant D5,057,657435,941

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0492353
B0292113
C0158573
D0201763

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7666536970.036525%
B7666167321.823637%
C76661441.878424%
D76662643.443778%

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 7976 7663 3904 3904 48.95% 50.95%
B 7976 7668 979 979 12.27% 12.77%
C 7976 7668 0 0 0.00% 0.00%
D 7976 7668 114 114 1.43% 1.49%

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 14 235 12573405 108620.54 569 557 115.8
A 15 174 24128 203.64 569 557 115.8
A 5 247 12873 106.4 569 557 115.8
B 3 112 3892902 23197.18 863 840 167.8
B 7 220 636665 3789.6 863 840 167.8
B 0 189 57970 340.5 863 840 167.8
C 14 238 138498 646.74 906 909 212.7
C 3 233 88442 411.45 906 909 212.7
C 13 61 6547 26.5 906 909 212.7
D 7 238 590919 2619.98 915 887 225.2
D 12 233 342180 1515.48 915 887 225.2
D 12 110 334345 1480.69 915 887 225.2

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