ASTROSAT CZTI

Data Quality Report

Orbit 16692

Creation date: 2024-06-27T17:26:19.016382
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/AS1T03_024T01_9000002472_16692cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16692cztM0_level2_quad_clean.evt
Size (bytes)491,613,12067,996,800
Size468.8 MB 64.8 MB
Events in quadrant A4,767,421419,280
Events in quadrant B2,738,192454,656
Events in quadrant C2,480,886441,088
Events in quadrant D4,567,771397,911

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175352
B0112431
C0103571
D0169711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492889118.080357%
B49281322.678571%
C49281022.069805%
D49284839.801136%

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 5494 4930 541 541 9.85% 10.97%
B 5494 4930 21 21 0.38% 0.43%
C 5494 4930 0 0 0.00% 0.00%
D 5494 4930 317 317 5.77% 6.43%

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 15 174 2122013 17782.56 584 573 119.3
A 9 143 339571 2841.58 584 573 119.3
A 12 96 43311 358.24 584 573 119.3
B 15 35 103420 854.56 626 613 120.3
B 7 220 91155 752.61 626 613 120.3
B 0 197 33999 277.51 626 613 120.3
C 14 238 92888 648.81 603 609 142.2
C 3 233 22978 157.27 603 609 142.2
C 8 128 6635 42.37 603 609 142.2
D 5 222 1023733 7046.95 592 576 145.2
D 1 52 731405 5033.56 592 576 145.2
D 2 16 408080 2806.67 592 576 145.2

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