ASTROSAT CZTI

Data Quality Report

Orbit 20190418_A05_063T03_9000002840_level2

Creation date: 2025-11-29T10:56:32.799757
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_063T03_9000002840cztM0_level2.fits modeM0/AS1A05_063T03_9000002840cztM0_level2_quad_clean.evt
Size (bytes)421,560,000421,191,360
Size402.0 MB 401.7 MB
Events in quadrant A2,559,0102,509,516
Events in quadrant B2,473,4682,539,128
Events in quadrant C2,492,6422,421,194
Events in quadrant D2,220,1662,264,548

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08940
B08940
C08940
D08940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0911960
B0914350
C01238730
D0986440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A440246231.415137%
B440247051.601399%
C4402412822.912048%
D440246101.385608%

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 48954 44018 0 0 0.00% 0.00%
B 48954 44019 0 0 0.00% 0.00%
C 48954 44019 0 0 0.00% 0.00%
D 48954 44018 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 2491 11.19 664 622 167.1
A 7 110 2101 8.85 664 622 167.1
A 0 30 1975 8.1 664 622 167.1
B 2 9 2055 10.8 653 621 132.8
B 2 8 1731 8.36 653 621 132.8
B 3 17 1670 7.9 653 621 132.8
C 1 80 1875 7.48 657 611 169.1
C 1 81 1818 7.14 657 611 169.1
C 12 241 1765 6.83 657 611 169.1
D 10 190 1667 6.52 631 573 167.9
D 3 14 1646 6.39 631 573 167.9
D 3 31 1556 5.86 631 573 167.9

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