ASTROSAT CZTI

Data Quality Report

Orbit 20230302_A12_068T02_9000005524_level2

Creation date: 2023-03-04T11:52:24.058016
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/AS1A12_068T02_9000005524cztM0_level2.fits modeM0/AS1A12_068T02_9000005524cztM0_level2_quad_clean.evt
Size (bytes)339,825,600338,875,200
Size324.1 MB 323.2 MB
Events in quadrant A2,324,9042,471,416
Events in quadrant B2,263,7142,511,325
Events in quadrant C735,118119,059
Events in quadrant D1,984,4402,197,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01850
C01840
D01850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08900
B08920
C08850
D08860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0936990
B0917900
C03509720
D01088880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A432943190.736823%
B432724170.963672%
C426984041294.646119%
D4328514703.396096%

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 63298 43355 0 0 0.00% 0.00%
B 63298 43314 0 0 0.00% 0.00%
C 63298 41585 0 0 0.00% 0.00%
D 63298 43319 0 0 0.00% 0.00%

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 7 110 1979 9.2 606 568 153.4
A 0 29 1902 8.7 606 568 153.4
A 9 19 1894 8.64 606 568 153.4
B 2 9 1865 10.86 598 572 119.0
B 3 80 1697 9.45 598 572 119.0
B 5 128 1574 8.42 598 572 119.0
C 1 81 636 8.51 194 184 53.1
C 3 202 625 8.31 194 184 53.1
C 1 80 602 7.87 194 184 53.1
D 10 189 1499 6.4 568 518 153.4
D 7 3 1488 6.33 568 518 153.4
D 1 3 1462 6.16 568 518 153.4

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