ASTROSAT CZTI

Data Quality Report

Orbit 02478

Creation date: 2024-06-27T14:18:21.093712
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/AS1G02_018T06_9000000370_02478cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02478cztM0_level2_quad_clean.evt
Size (bytes)460,854,72086,497,920
Size439.5 MB 82.5 MB
Events in quadrant A3,290,924522,663
Events in quadrant B3,434,432540,192
Events in quadrant C3,338,484536,518
Events in quadrant D3,404,736520,119

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148153
B0150352
C0150162
D0153482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71711902.649561%
B71711862.593781%
C71711231.715242%
D71711572.189374%

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 8726 7173 0 0 0.00% 0.00%
B 8726 7173 1 1 0.01% 0.01%
C 8726 7173 4 4 0.05% 0.06%
D 8726 7173 14 14 0.16% 0.20%

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 63 13357 71.64 851 829 174.9
A 12 194 9586 50.08 851 829 174.9
A 0 226 9094 47.26 851 829 174.9
B 10 244 27837 160.84 866 844 167.8
B 15 85 26787 154.59 866 844 167.8
B 4 48 23861 137.15 866 844 167.8
C 14 223 50528 254.17 833 836 195.5
C 10 65 22551 111.07 833 836 195.5
C 13 61 7536 34.27 833 836 195.5
D 2 184 87528 440.86 825 803 196.7
D 5 172 76543 385.02 825 803 196.7
D 6 112 31880 157.98 825 803 196.7

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