ASTROSAT CZTI

Data Quality Report

Orbit 20190724_A05_022T09_9000003058_level2

Creation date: 2025-12-02T18:16:15.834309
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_022T09_9000003058cztM0_level2.fits modeM0/AS1A05_022T09_9000003058cztM0_level2_quad_clean.evt
Size (bytes)236,560,320311,538,240
Size225.6 MB 297.1 MB
Events in quadrant A1,431,1822,005,454
Events in quadrant B1,365,5941,974,306
Events in quadrant C1,400,7281,938,041
Events in quadrant D1,214,2761,765,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0521700
B0556300
C0517240
D0581410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05200
B05200
C05200
D05200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A254751200.471050%
B254754231.660451%
C254752100.824338%
D254757462.928361%

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 27460 25475 0 0 0.00% 0.00%
B 27460 25474 0 0 0.00% 0.00%
C 27460 25475 0 0 0.00% 0.00%
D 27460 25347 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 1389 11.03 372 350 94.2
A 7 110 1132 8.31 372 350 94.2
A 0 30 1108 8.05 372 350 94.2
B 2 9 1090 10.16 361 344 73.4
B 14 254 927 7.94 361 344 73.4
B 2 8 893 7.48 361 344 73.4
C 12 249 970 6.45 369 345 97.0
C 12 241 964 6.38 369 345 97.0
C 3 126 948 6.22 369 345 97.0
D 7 3 883 6.0 346 315 94.6
D 10 189 846 5.61 346 315 94.6
D 6 83 845 5.6 346 315 94.6

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