ASTROSAT CZTI

Data Quality Report

Orbit 31379

Creation date: 2024-06-27T20:27:31.197313
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/AS1A10_064T05_9000004548_31379cztM0_level2.evt modeM0/AS1A10_064T05_9000004548_31379cztM0_level2_quad_clean.evt
Size (bytes)577,221,12094,740,480
Size550.5 MB 90.4 MB
Events in quadrant A3,109,338626,388
Events in quadrant B4,945,617634,678
Events in quadrant C5,464,619569,859
Events in quadrant D3,523,912586,903

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133992
B0195892
C0206797
D0147932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6465150.232019%
B6465651.005414%
C64646409.900990%
D6464500.773515%

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 7620 6466 0 0 0.00% 0.00%
B 7620 6466 1 1 0.01% 0.02%
C 7619 6465 300 300 3.94% 4.64%
D 7619 6465 23 23 0.30% 0.36%

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 11366 65.6 806 791 161.2
A 3 137 7716 42.96 806 791 161.2
A 0 226 6704 36.68 806 791 161.2
B 6 159 1720418 11378.45 802 782 151.1
B 0 190 25868 165.99 802 782 151.1
B 4 80 22530 143.9 802 782 151.1
C 3 233 2344476 13464.5 748 754 174.1
C 14 238 126930 724.87 748 754 174.1
C 0 10 47418 268.08 748 754 174.1
D 8 195 473844 2579.96 773 755 183.4
D 2 250 107543 582.36 773 755 183.4
D 2 234 25691 135.99 773 755 183.4

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