ASTROSAT CZTI

Data Quality Report

Orbit 24855

Creation date: 2024-06-27T19:10:40.958550
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/AS1A08_003T06_9000003636_24855cztM0_level2.evt modeM0/AS1A08_003T06_9000003636_24855cztM0_level2_quad_clean.evt
Size (bytes)562,461,12072,132,480
Size536.4 MB 68.8 MB
Events in quadrant A3,646,264448,685
Events in quadrant B3,339,511461,352
Events in quadrant C5,672,501409,657
Events in quadrant D3,944,195419,851

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144331
B0134391
C0212861
D0156511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63661963.078856%
B63661091.712221%
C636779912.549081%
D63662003.141690%

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 7416 6367 98 98 1.32% 1.54%
B 7416 6367 0 0 0.00% 0.00%
C 7417 6368 573 573 7.73% 9.00%
D 7416 6367 136 136 1.83% 2.14%

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 6 16 368182 2156.36 850 835 170.4
A 13 254 9322 49.82 850 835 170.4
A 3 137 7731 40.48 850 835 170.4
B 12 111 19808 117.65 846 825 161.4
B 11 111 18084 106.96 846 825 161.4
B 14 111 17196 101.46 846 825 161.4
C 7 247 1720157 9594.99 769 776 179.2
C 2 16 740245 4126.6 769 776 179.2
C 14 238 123280 683.63 769 776 179.2
D 1 52 739640 3782.37 807 785 195.3
D 8 195 102750 521.98 807 785 195.3
D 12 218 28925 144.06 807 785 195.3

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