ASTROSAT CZTI

Data Quality Report

Orbit 54563

Creation date: 2025-10-29T11:27:32.841970
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_127T09_9000006520_54563cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54563cztM0_level2_quad_clean.evt
Size (bytes)521,524,800110,168,640
Size497.4 MB 105.1 MB
Events in quadrant A4,068,706730,247
Events in quadrant B4,291,464761,315
Events in quadrant C4,149,393690,935
Events in quadrant D6,191,005612,310

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174673
B0186483
C0182433
D0241313

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77782052.635639%
B77783995.129853%
C77772353.021731%
D77777179.219493%

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 8003 7781 76 76 0.95% 0.98%
B 8003 7781 105 105 1.31% 1.35%
C 8002 7780 111 111 1.39% 1.43%
D 8002 7780 649 649 8.11% 8.34%

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 14 325496 1510.3 861 838 215.0
A 11 3 294967 1368.28 861 838 215.0
A 4 3 44808 204.55 861 838 215.0
B 2 249 459766 2509.5 845 813 182.9
B 10 14 185332 1008.93 845 813 182.9
B 0 213 83578 452.55 845 813 182.9
C 13 3 546505 2372.25 835 829 230.0
C 14 254 89344 384.81 835 829 230.0
C 4 5 86952 374.41 835 829 230.0
D 3 12 2400789 10278.17 811 777 233.5
D 15 94 200585 855.69 811 777 233.5
D 8 160 123983 527.64 811 777 233.5

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