ASTROSAT CZTI

Data Quality Report

Orbit 18810

Creation date: 2024-06-27T17:55:08.142586
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_173T01_9000002812_18810cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18810cztM0_level2_quad_clean.evt
Size (bytes)668,551,680123,825,600
Size637.6 MB 118.1 MB
Events in quadrant A4,080,197800,469
Events in quadrant B4,228,038805,784
Events in quadrant C7,341,945765,024
Events in quadrant D4,001,535769,002

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179911
B0182621
C0277361
D0182391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8793410.466280%
B8793650.739224%
C879388610.076197%
D8793240.272944%

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 9358 8794 1 1 0.01% 0.01%
B 9358 8794 1 1 0.01% 0.01%
C 9358 8794 499 499 5.33% 5.67%
D 9358 8794 4 4 0.04% 0.05%

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 4 2 42384 195.65 1043 1022 211.4
A 13 254 15069 66.44 1043 1022 211.4
A 0 226 9007 37.77 1043 1022 211.4
B 0 230 45529 221.22 1043 1017 201.2
B 0 229 29326 140.69 1043 1017 201.2
B 12 111 23803 113.24 1043 1017 201.2
C 3 233 3377469 14821.27 966 972 227.8
C 14 238 147858 644.76 966 972 227.8
C 9 54 32870 140.02 966 972 227.8
D 9 1 66383 263.59 1014 986 248.1
D 7 38 58507 231.85 1014 986 248.1
D 2 234 38649 151.81 1014 986 248.1

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