ASTROSAT CZTI

Data Quality Report

Orbit 33848

Creation date: 2024-06-27T20:53:20.905447
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/AS1A11_065T11_9000004830_33848cztM0_level2.evt modeM0/AS1A11_065T11_9000004830_33848cztM0_level2_quad_clean.evt
Size (bytes)639,002,88083,070,720
Size609.4 MB 79.2 MB
Events in quadrant A3,169,899534,171
Events in quadrant B5,831,662482,491
Events in quadrant C3,488,488534,532
Events in quadrant D6,417,857505,934

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135653
B0217632
C0141792
D0236532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6567150.228415%
B656792814.131262%
C6567290.441602%
D65674837.354957%

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 9372 6569 6 6 0.06% 0.09%
B 9372 6569 748 748 7.98% 11.39%
C 9372 6569 18 18 0.19% 0.27%
D 9372 6569 320 320 3.41% 4.87%

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 15 169 129521 830.4 771 755 155.1
A 13 6 22000 137.01 771 755 155.1
A 7 16 21697 135.05 771 755 155.1
B 5 172 1741685 12572.65 725 705 138.5
B 15 222 1044783 7539.9 725 705 138.5
B 0 190 38749 274.74 725 705 138.5
C 15 214 287887 1667.67 750 756 172.2
C 0 10 101352 584.27 750 756 172.2
C 3 233 82069 472.27 750 756 172.2
D 8 195 1592567 8278.82 729 711 192.3
D 12 235 670251 3482.1 729 711 192.3
D 2 249 490181 2545.6 729 711 192.3

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