ASTROSAT CZTI

Data Quality Report

Orbit 20220511_A09_029T09_9000005138_level2

Creation date: 2026-01-02T15:13:54.615191
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/AS1A09_029T09_9000005138cztM0_level2.fits modeM0/AS1A09_029T09_9000005138cztM0_level2_quad_clean.evt
Size (bytes)401,837,760452,543,040
Size383.2 MB 431.6 MB
Events in quadrant A2,339,8342,588,836
Events in quadrant B2,323,5422,841,566
Events in quadrant C2,405,9362,766,807
Events in quadrant D2,076,6482,487,147

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09000
B09000
C09000
D09000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01391560
B01125130
C0949730
D01159340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4400040299.156818%
B4400414953.397418%
C440094751.079325%
D4400213803.136221%

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 58016 43943 0 0 0.00% 0.00%
B 58016 43998 0 0 0.00% 0.00%
C 58016 44000 0 0 0.00% 0.00%
D 58016 43973 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 1900 8.75 611 574 151.6
A 7 110 1858 8.47 611 574 151.6
A 9 19 1854 8.44 611 574 151.6
B 2 9 2020 11.74 615 587 122.1
B 3 80 1800 9.93 615 587 122.1
B 5 128 1615 8.42 615 587 122.1
C 1 81 2020 8.66 635 594 164.7
C 1 80 1950 8.23 635 594 164.7
C 3 187 1680 6.59 635 594 164.7
D 7 3 1521 6.28 594 543 155.8
D 4 160 1503 6.16 594 543 155.8
D 10 189 1494 6.1 594 543 155.8

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