ASTROSAT CZTI

Data Quality Report

Orbit 17851

Creation date: 2024-06-27T17:41:40.840204
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_085T01_9000002658_17851cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17851cztM0_level2_quad_clean.evt
Size (bytes)502,361,28094,556,160
Size479.1 MB 90.2 MB
Events in quadrant A3,562,277594,033
Events in quadrant B3,651,983598,921
Events in quadrant C3,714,706573,191
Events in quadrant D3,763,009562,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159722
B0159852
C0160082
D0168232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76711802.346500%
B76722463.206465%
C76722833.688738%
D76722483.232534%

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 8491 7674 0 0 0.00% 0.00%
B 8492 7675 0 0 0.00% 0.00%
C 8492 7675 0 0 0.00% 0.00%
D 8492 7675 70 70 0.82% 0.91%

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 0 226 7853 36.63 927 904 189.7
A 3 137 7411 34.3 927 904 189.7
A 12 194 6636 30.21 927 904 189.7
B 12 111 22616 119.86 929 901 181.2
B 11 111 19450 102.38 929 901 181.2
B 14 111 16632 86.83 929 901 181.2
C 14 238 135599 634.39 896 902 212.3
C 3 233 52106 241.16 896 902 212.3
C 5 218 31965 146.3 896 902 212.3
D 7 238 309329 1402.46 902 874 219.9
D 2 234 34577 153.24 902 874 219.9
D 7 96 24103 105.62 902 874 219.9

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