ASTROSAT CZTI

Data Quality Report

Orbit 25531

Creation date: 2024-06-27T19:18:42.053587
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/AS1A07_147T01_9000003722_25531cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25531cztM0_level2_quad_clean.evt
Size (bytes)452,799,36082,065,600
Size431.8 MB 78.3 MB
Events in quadrant A3,198,146525,402
Events in quadrant B3,288,471539,912
Events in quadrant C3,377,515496,055
Events in quadrant D3,418,819481,854

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132910
B0135190
C0138780
D0140170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6334220.347332%
B6334330.520998%
C6334921.452479%
D6334330.520998%

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 7524 6335 0 0 0.00% 0.00%
B 7524 6335 0 0 0.00% 0.00%
C 7524 6335 5 5 0.07% 0.08%
D 7524 6335 24 24 0.32% 0.38%

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 13 254 9197 50.69 829 813 165.4
A 3 137 7307 39.26 829 813 165.4
A 0 226 7063 37.79 829 813 165.4
B 12 111 18960 114.82 831 812 158.1
B 0 190 18425 111.43 831 812 158.1
B 11 111 16924 101.94 831 812 158.1
C 3 233 167434 900.97 789 795 185.0
C 14 238 127963 687.56 789 795 185.0
C 2 16 9775 48.55 789 795 185.0
D 1 52 254533 1318.05 790 767 192.5
D 8 195 145970 754.18 790 767 192.5
D 2 234 21973 110.14 790 767 192.5

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