ASTROSAT CZTI

Data Quality Report

Orbit 20170608_C02_027T01_9000001280_level2

Creation date: 2026-03-11T14:49:30.270563
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/AS1C02_027T01_9000001280cztM0_level2.fits modeM0/AS1C02_027T01_9000001280cztM0_level2_quad_clean.evt
Size (bytes)540,665,280780,013,440
Size515.6 MB 743.9 MB
Events in quadrant A3,214,8405,064,835
Events in quadrant B3,118,9525,071,871
Events in quadrant C3,228,3204,942,591
Events in quadrant D2,768,2884,504,931

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01373020
B01326860
C01202540
D01402580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012000
B012000
C012000
D012000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5893414032.380629%
B5893514492.458641%
C589357381.252227%
D5893520323.447866%

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 67289 58921 0 0 0.00% 0.00%
B 67289 58922 0 0 0.00% 0.00%
C 67289 58923 0 0 0.00% 0.00%
D 67289 58852 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 3222 11.59 837 785 210.2
A 7 110 2604 8.65 837 785 210.2
A 0 30 2542 8.36 837 785 210.2
B 2 9 2788 12.51 823 785 160.1
B 3 17 2108 8.26 823 785 160.1
B 12 226 2108 8.26 823 785 160.1
C 12 241 2242 6.55 852 794 221.1
C 2 191 2175 6.25 852 794 221.1
C 9 188 2130 6.04 852 794 221.1
D 3 14 2146 6.82 787 720 208.9
D 6 231 2061 6.42 787 720 208.9
D 3 31 1980 6.03 787 720 208.9

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