ASTROSAT CZTI

Data Quality Report

Orbit 11998

Creation date: 2024-06-27T16:21:04.990424
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/AS1G08_024T03_9000001774_11998cztM0_level2.evt modeM0/AS1G08_024T03_9000001774_11998cztM0_level2_quad_clean.evt
Size (bytes)515,128,320102,824,640
Size491.3 MB 98.1 MB
Events in quadrant A3,592,382683,905
Events in quadrant B4,666,507662,488
Events in quadrant C3,151,093678,204
Events in quadrant D3,762,052648,398

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149743
B0183422
C0136052
D0154682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63121352.138783%
B63125328.428390%
C6312841.330798%
D63121412.233840%

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 8843 6314 0 0 0.00% 0.00%
B 8843 6313 332 332 3.75% 5.26%
C 8843 6313 0 0 0.00% 0.00%
D 8843 6313 54 54 0.61% 0.86%

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 1 162 162214 989.05 815 800 163.2
A 1 178 87779 532.95 815 800 163.2
A 1 161 76741 465.32 815 800 163.2
B 4 239 857248 5827.38 794 775 147.0
B 0 85 320333 2174.25 794 775 147.0
B 15 204 135833 918.92 794 775 147.0
C 1 16 12425 63.0 803 806 184.4
C 13 61 6053 28.45 803 806 184.4
C 12 4 3252 13.26 803 806 184.4
D 8 195 159441 844.56 795 773 187.9
D 1 52 156024 826.37 795 773 187.9
D 13 104 106829 564.52 795 773 187.9

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