ASTROSAT CZTI

Data Quality Report

Orbit 20220607_A11_097T17_9000005170_level2

Creation date: 2026-01-03T04:56:18.848369
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/AS1A11_097T17_9000005170cztM0_level2.fits modeM0/AS1A11_097T17_9000005170cztM0_level2_quad_clean.evt
Size (bytes)520,793,280520,130,880
Size496.7 MB 496.0 MB
Events in quadrant A3,213,9223,250,932
Events in quadrant B3,090,8103,242,617
Events in quadrant C2,913,7842,709,710
Events in quadrant D2,644,1262,643,509

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011680
B011680
C011680
D011680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190640
B01260430
C01883850
D01701570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A569031310.230216%
B569037071.242465%
C56903765513.452718%
D5690342707.503998%

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 79070 56904 0 0 0.00% 0.00%
B 79070 56902 0 0 0.00% 0.00%
C 79070 56525 0 0 0.00% 0.00%
D 79070 56861 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 9 19 2653 8.9 839 787 209.5
A 0 29 2635 8.82 839 787 209.5
A 7 110 2606 8.68 839 787 209.5
B 2 9 2649 11.51 818 781 162.4
B 3 80 2341 9.61 818 781 162.4
B 2 8 2219 8.86 818 781 162.4
C 1 81 2452 8.59 772 723 201.3
C 1 80 2373 8.2 772 723 201.3
C 3 187 1986 6.28 772 723 201.3
D 7 3 1944 6.24 756 687 201.6
D 6 67 1942 6.23 756 687 201.6
D 10 113 1939 6.21 756 687 201.6

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