ASTROSAT CZTI

Data Quality Report

Orbit 53698

Creation date: 2025-09-01T11:15:13.978472
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/AS1A14_022T05_9000006504_53698cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53698cztM0_level2_quad_clean.evt
Size (bytes)1,026,806,40078,042,240
Size979.2 MB 74.4 MB
Events in quadrant A13,717,504341,729
Events in quadrant B5,569,547613,669
Events in quadrant C12,370,873353,979
Events in quadrant D5,807,236562,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0456626
B02169410
C0416352
D02216515

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7053367552.105487%
B7052100714.279637%
C7053338948.050475%
D70505137.276596%

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 7917 7052 3831 3831 48.39% 54.33%
B 7917 7051 861 861 10.88% 12.21%
C 7917 7052 3383 3383 42.73% 47.97%
D 7918 7052 529 529 6.68% 7.50%

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 3 63 8158134 56620.98 576 562 144.1
A 3 78 2517336 17468.71 576 562 144.1
A 14 254 465840 3229.45 576 562 144.1
B 5 185 2350123 15659.17 692 667 150.0
B 4 81 253513 1685.22 692 667 150.0
B 0 182 42838 281.07 692 667 150.0
C 1 241 4158416 27864.15 535 530 149.2
C 15 224 3828635 25654.12 535 530 149.2
C 13 3 1147403 7685.79 535 530 149.2
D 2 37 1202320 5887.88 706 675 204.1
D 7 70 347033 1697.1 706 675 204.1
D 1 241 323783 1583.18 706 675 204.1

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