ASTROSAT CZTI

Data Quality Report

Orbit 19248

Creation date: 2024-06-27T18:00:36.149074
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/AS1C04_001T01_9000002846_19248cztM0_level2.evt modeM0/AS1C04_001T01_9000002846_19248cztM0_level2_quad_clean.evt
Size (bytes)441,031,68089,481,600
Size420.6 MB 85.3 MB
Events in quadrant A3,113,128575,551
Events in quadrant B3,194,637580,978
Events in quadrant C3,452,338554,884
Events in quadrant D3,163,038553,435

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134481
B0135941
C0141991
D0136671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6380661.034483%
B6381851.332080%
C63811131.770882%
D6381500.783576%

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 7505 6380 0 0 0.00% 0.00%
B 7506 6381 7 7 0.09% 0.11%
C 7506 6381 3 3 0.04% 0.05%
D 7506 6381 5 5 0.07% 0.08%

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 8550 48.23 804 786 161.0
A 11 29 8500 47.92 804 786 161.0
A 0 226 7113 39.3 804 786 161.0
B 3 64 31549 206.84 796 777 148.8
B 0 190 20975 135.77 796 777 148.8
B 12 111 17481 112.28 796 777 148.8
C 3 233 304816 1703.58 771 776 178.5
C 14 238 122747 683.42 771 776 178.5
C 0 207 18123 97.2 771 776 178.5
D 1 52 138954 734.33 785 763 188.2
D 2 234 27529 142.23 785 763 188.2
D 7 96 23041 118.38 785 763 188.2

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