ASTROSAT CZTI

Data Quality Report

Orbit 19179

Creation date: 2024-06-27T17:59:49.110952
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_046T01_9000002838_19179cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19179cztM0_level2_quad_clean.evt
Size (bytes)491,728,320107,233,920
Size468.9 MB 102.3 MB
Events in quadrant A3,430,300695,915
Events in quadrant B3,532,982727,770
Events in quadrant C3,712,225698,394
Events in quadrant D3,764,852661,791

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143622
B0146402
C0150452
D0156222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66481041.564380%
B66481291.940433%
C66481542.316486%
D66491382.075500%

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 9298 6650 0 0 0.00% 0.00%
B 9298 6650 2 2 0.02% 0.03%
C 9298 6650 1 1 0.01% 0.02%
D 9299 6651 64 64 0.69% 0.96%

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 26373 144.13 881 863 177.0
A 13 254 9225 47.24 881 863 177.0
A 0 226 7792 39.15 881 863 177.0
B 12 111 19749 112.35 892 870 168.0
B 11 111 17118 96.69 892 870 168.0
B 14 111 14774 82.74 892 870 168.0
C 3 233 204339 1015.8 861 869 200.3
C 14 238 134123 665.25 861 869 200.3
C 0 207 18867 89.85 861 869 200.3
D 11 176 293853 1418.91 858 837 206.5
D 1 52 150185 723.21 858 837 206.5
D 9 68 65627 313.74 858 837 206.5

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