ASTROSAT CZTI

Data Quality Report

Orbit 20190305_A05_075T07_9000002760_level2

Creation date: 2025-11-28T11:48:37.192244
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/AS1A05_075T07_9000002760cztM0_level2.fits modeM0/AS1A05_075T07_9000002760cztM0_level2_quad_clean.evt
Size (bytes)395,349,120371,427,840
Size377.0 MB 354.2 MB
Events in quadrant A2,393,2962,169,138
Events in quadrant B2,328,2442,212,378
Events in quadrant C2,362,4922,087,735
Events in quadrant D1,991,8441,883,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0892000
B0872350
C0948440
D01213380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08560
B08560
C08560
D08560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A421777891.870688%
B421776621.569576%
C4217714033.326458%
D4217735688.459587%

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 45632 42166 0 0 0.00% 0.00%
B 45632 42174 0 0 0.00% 0.00%
C 45632 42174 0 0 0.00% 0.00%
D 45632 42149 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 0 29 2100 9.62 623 584 157.6
A 7 110 1881 8.23 623 584 157.6
A 0 30 1779 7.58 623 584 157.6
B 2 9 1926 10.83 614 582 124.1
B 2 8 1679 8.84 614 582 124.1
B 3 17 1588 8.11 614 582 124.1
C 1 80 1837 7.87 622 577 160.0
C 1 81 1803 7.66 622 577 160.0
C 3 126 1712 7.09 622 577 160.0
D 10 190 1528 6.67 567 514 151.9
D 3 14 1457 6.21 567 514 151.9
D 10 189 1428 6.02 567 514 151.9

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