ASTROSAT CZTI

Data Quality Report

Orbit 50343

Creation date: 2025-01-18T09:57:05.949794
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/AS1C09_003T01_9000006442_50343cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50343cztM0_level2_quad_clean.evt
Size (bytes)852,347,52083,617,920
Size812.9 MB 79.7 MB
Events in quadrant A4,563,068614,464
Events in quadrant B4,648,744660,474
Events in quadrant C8,913,108463,421
Events in quadrant D12,899,327317,819

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181811
B0184402
C0311451
D0430811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68212423.547867%
B68213334.881982%
C6821184126.990177%
D6821337849.523530%

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 7671 6821 181 181 2.36% 2.65%
B 7671 6821 237 237 3.09% 3.47%
C 7671 6821 1820 1820 23.73% 26.68%
D 7671 6821 3600 3600 46.93% 52.78%

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 3 231 332194 1838.58 712 694 180.3
A 4 3 243433 1346.29 712 694 180.3
A 13 248 167763 926.61 712 694 180.3
B 0 200 376882 2483.75 708 684 151.5
B 1 238 355769 2344.36 708 684 151.5
B 10 44 318204 2096.34 708 684 151.5
C 0 208 4133757 24408.6 615 613 169.3
C 15 232 421605 2486.2 615 613 169.3
C 1 60 369571 2178.91 615 613 169.3
D 7 61 5578361 35352.36 550 530 157.8
D 11 245 1349592 8550.37 550 530 157.8
D 12 6 468083 2963.36 550 530 157.8

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