ASTROSAT CZTI

Data Quality Report

Orbit 44795

Creation date: 2024-06-27T23:06:39.903214
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_004T13_9000006022_44795cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44795cztM0_level2_quad_clean.evt
Size (bytes)684,809,280109,192,320
Size653.1 MB 104.1 MB
Events in quadrant A8,200,194703,547
Events in quadrant B4,169,799772,454
Events in quadrant C3,135,775764,726
Events in quadrant D9,297,343574,025

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293722
B0172582
C0145893
D0326222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A706480711.424122%
B70642844.020385%
C7063430.608806%
D7064157522.296149%

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 9139 7064 573 573 6.27% 8.11%
B 9139 7065 149 149 1.63% 2.11%
C 9138 7065 8 8 0.09% 0.11%
D 9138 7065 1600 1600 17.51% 22.65%

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 15 223 3103526 19779.83 754 737 156.9
A 10 83 2132518 13589.79 754 737 156.9
A 10 248 22361 137.85 754 737 156.9
B 0 189 566657 3724.5 776 753 151.9
B 5 172 105855 691.73 776 753 151.9
B 5 255 92471 603.64 776 753 151.9
C 1 3 25385 134.6 780 782 182.8
C 2 14 20416 107.41 780 782 182.8
C 14 254 19686 103.42 780 782 182.8
D 13 187 3999114 22158.99 720 694 180.4
D 13 249 657445 3639.67 720 694 180.4
D 5 235 514432 2847.1 720 694 180.4

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