ASTROSAT CZTI

Data Quality Report

Orbit 09978

Creation date: 2024-06-27T15:53:16.135067
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/AS1G07_074T01_9000001426_09978cztM0_level2.evt modeM0/AS1G07_074T01_9000001426_09978cztM0_level2_quad_clean.evt
Size (bytes)698,160,96078,834,240
Size665.8 MB 75.2 MB
Events in quadrant A8,767,002439,851
Events in quadrant B3,799,652480,591
Events in quadrant C3,505,278481,422
Events in quadrant D4,553,155452,727

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330041861
B016832314
C016455346
D019287424

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01628
B01624
C01624
D01624

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7528198126.315090%
B77092843.684006%
C76922523.276131%
D76723614.705422%

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 8313 7713 1554 1554 18.69% 20.15%
B 8314 7835 0 0 0.00% 0.00%
C 8314 7836 0 0 0.00% 0.00%
D 8314 7833 90 90 1.08% 1.15%

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 13 251 5476794 31506.76 839 816 173.8
A 8 15 46854 264.89 839 816 173.8
A 15 174 13067 70.49 839 816 173.8
B 0 214 78427 432.61 919 893 179.2
B 11 51 70378 387.7 919 893 179.2
B 12 111 19900 106.05 919 893 179.2
C 13 61 6668 27.42 896 900 210.3
C 14 67 4643 17.8 896 900 210.3
C 14 234 4534 17.28 896 900 210.3
D 2 152 456713 2060.0 878 851 221.3
D 2 16 236335 1064.13 878 851 221.3
D 2 33 184765 831.09 878 851 221.3

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