ASTROSAT CZTI

Data Quality Report

Orbit 46404

Creation date: 2024-06-27T23:22:46.674368
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/AS1A13_070T04_9000006204_46404cztM0_level2.fits modeM0/AS1A13_070T04_9000006204_46404cztM0_level2_quad_clean.evt
Size (bytes)446,826,240109,454,400
Size426.1 MB 104.4 MB
Events in quadrant A6,127,168721,543
Events in quadrant B3,431,609755,218
Events in quadrant C2,994,764718,332
Events in quadrant D3,472,609657,432

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224341
B0146645
C0136821
D0149461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66172543.838598%
B66161612.433495%
C6617701.057881%
D66171111.677497%

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 7487 6619 5 5 0.07% 0.08%
B 7486 6618 30 30 0.40% 0.45%
C 7487 6619 6 6 0.08% 0.09%
D 7487 6619 33 33 0.44% 0.50%

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 10 83 3190282 20861.1 739 723 152.9
A 13 248 26940 171.47 739 723 152.9
A 2 79 18520 116.4 739 723 152.9
B 2 2 186935 1284.77 738 713 144.9
B 5 172 146617 1006.61 738 713 144.9
B 4 171 89997 615.98 738 713 144.9
C 9 54 70289 408.12 731 734 170.4
C 14 254 29785 170.46 731 734 170.4
C 1 3 23687 134.68 731 734 170.4
D 1 52 138621 751.14 732 707 183.6
D 5 235 119347 646.17 732 707 183.6
D 13 171 110226 596.49 732 707 183.6

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