ASTROSAT CZTI

Data Quality Report

Orbit 17793

Creation date: 2024-06-27T17:40:59.072895
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_015T01_9000002650_17793cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17793cztM0_level2_quad_clean.evt
Size (bytes)469,008,00096,575,040
Size447.3 MB 92.1 MB
Events in quadrant A3,280,605610,599
Events in quadrant B3,446,114625,667
Events in quadrant C3,536,734599,768
Events in quadrant D3,456,141592,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147062
B0149791
C0149471
D0153431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71132673.753690%
B71142854.006185%
C71142573.612595%
D71142273.190891%

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 7128 7114 0 0 0.00% 0.00%
B 7129 7115 13 13 0.18% 0.18%
C 7129 7115 0 0 0.00% 0.00%
D 7129 7115 11 11 0.15% 0.15%

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 15 174 9637 50.38 851 832 174.8
A 0 226 7380 37.47 851 832 174.8
A 3 137 6506 32.47 851 832 174.8
B 7 220 51783 309.97 849 827 164.4
B 6 36 37873 225.36 849 827 164.4
B 12 111 19733 115.01 849 827 164.4
C 14 238 126177 654.41 812 814 191.6
C 9 160 96172 497.78 812 814 191.6
C 9 176 69180 356.88 812 814 191.6
D 7 238 216318 1077.88 824 800 199.9
D 1 52 59348 292.82 824 800 199.9
D 10 70 33960 165.84 824 800 199.9

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