ASTROSAT CZTI

Data Quality Report

Orbit 12050

Creation date: 2024-06-27T16:21:44.248905
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/AS1A03_085T02_9000001784_12050cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12050cztM0_level2_quad_clean.evt
Size (bytes)574,657,92074,684,160
Size548.0 MB 71.2 MB
Events in quadrant A3,830,342440,607
Events in quadrant B5,247,850428,186
Events in quadrant C3,463,805434,762
Events in quadrant D4,338,102420,857

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164603
B0205672
C0157272
D0177912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7719550.712528%
B77193724.819277%
C7719190.246146%
D77191562.020987%

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 8295 7721 16 16 0.19% 0.21%
B 8294 7719 239 239 2.88% 3.10%
C 8295 7721 2 2 0.02% 0.03%
D 8295 7721 123 123 1.48% 1.59%

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 5 16 108445 586.31 900 880 183.5
A 1 162 82956 447.37 900 880 183.5
A 13 251 45372 242.51 900 880 183.5
B 4 239 1032515 5992.25 894 871 172.2
B 0 85 393008 2277.71 894 871 172.2
B 15 204 191103 1104.95 894 871 172.2
C 14 234 15410 70.19 883 888 206.9
C 7 247 8851 38.49 883 888 206.9
C 13 61 6448 26.87 883 888 206.9
D 1 52 623533 2978.69 870 844 209.0
D 8 195 329636 1572.81 870 844 209.0
D 13 104 53728 252.98 870 844 209.0

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