ASTROSAT CZTI

Data Quality Report

Orbit 21734

Creation date: 2024-06-27T18:32:08.446068
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/AS1A07_027T16_9000003222_21734cztM0_level2.evt modeM0/AS1A07_027T16_9000003222_21734cztM0_level2_quad_clean.evt
Size (bytes)375,998,40062,524,800
Size358.6 MB 59.6 MB
Events in quadrant A2,321,784393,107
Events in quadrant B2,451,768400,062
Events in quadrant C2,297,720389,441
Events in quadrant D3,976,387360,641

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103541
B0106211
C0102691
D0151301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49901112.224449%
B49901292.585170%
C49901152.304609%
D49914228.455219%

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 5355 4991 9 9 0.17% 0.18%
B 5355 4991 11 11 0.21% 0.22%
C 5355 4991 1 1 0.02% 0.02%
D 5356 4992 322 322 6.01% 6.45%

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 5 16 33282 271.6 586 571 120.4
A 15 236 29243 238.07 586 571 120.4
A 13 254 7156 54.68 586 571 120.4
B 3 64 96888 843.69 584 568 114.2
B 0 230 32403 278.85 584 568 114.2
B 0 197 15509 130.87 584 568 114.2
C 14 238 87525 642.57 566 568 135.3
C 10 23 5701 37.93 566 568 135.3
C 13 61 3851 24.26 566 568 135.3
D 7 238 1470280 10715.19 557 539 137.2
D 12 235 182817 1328.9 557 539 137.2
D 14 35 105399 764.49 557 539 137.2

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