ASTROSAT CZTI

Data Quality Report

Orbit 04144

Creation date: 2024-06-27T14:38:01.263658
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/AS1G05_240T01_9000000536_04144cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04144cztM0_level2_quad_clean.evt
Size (bytes)498,660,48082,123,200
Size475.6 MB 78.3 MB
Events in quadrant A3,514,850498,270
Events in quadrant B3,900,142497,014
Events in quadrant C3,469,025489,605
Events in quadrant D3,700,892472,592

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157592
B0166371
C0157411
D0165771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7608801.051525%
B76081341.761304%
C7608821.077813%
D76081221.603575%

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 7703 7609 0 0 0.00% 0.00%
B 7703 7609 20 20 0.26% 0.26%
C 7703 7609 2 2 0.03% 0.03%
D 7703 7609 51 51 0.66% 0.67%

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 3 1 56522 303.33 889 866 183.5
A 15 234 14703 75.41 889 866 183.5
A 0 50 10122 50.45 889 866 183.5
B 14 167 172206 975.58 900 878 175.6
B 10 16 145105 821.26 900 878 175.6
B 15 204 33116 183.57 900 878 175.6
C 10 65 45770 219.3 870 871 204.7
C 12 4 14140 64.81 870 871 204.7
C 13 61 7138 30.61 870 871 204.7
D 2 232 290370 1362.28 862 833 212.5
D 12 233 38687 178.1 862 833 212.5
D 13 239 34035 156.22 862 833 212.5

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