ASTROSAT CZTI

Data Quality Report

Orbit 48502

Creation date: 2024-09-16T06:03:27.002153
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/AS1A13_073T04_9000006430_48502cztM0_level2.fits modeM0/AS1A13_073T04_9000006430_48502cztM0_level2_quad_clean.evt
Size (bytes)432,509,760105,269,760
Size412.5 MB 100.4 MB
Events in quadrant A6,928,297673,157
Events in quadrant B2,871,567720,220
Events in quadrant C2,765,896698,218
Events in quadrant D2,929,908633,687

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251692
B0135492
C0135042
D0139233

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66242473.728865%
B6624360.543478%
C6625130.196226%
D6624350.528382%

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 8578 6624 131 131 1.53% 1.98%
B 8578 6623 0 0 0.00% 0.00%
C 8579 6624 0 0 0.00% 0.00%
D 8578 6623 18 18 0.21% 0.27%

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 10 83 4004805 27844.61 689 672 143.8
A 12 189 244015 1692.2 689 672 143.8
A 13 254 14673 97.36 689 672 143.8
B 15 52 32179 226.12 701 678 139.3
B 12 16 22368 155.69 701 678 139.3
B 12 111 17784 122.79 701 678 139.3
C 14 67 19584 114.41 696 699 165.1
C 11 16 9988 56.28 696 699 165.1
C 12 249 8669 48.29 696 699 165.1
D 2 249 124549 715.32 688 666 173.2
D 10 199 59505 339.74 688 666 173.2
D 5 171 42826 243.44 688 666 173.2

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