ASTROSAT CZTI

Data Quality Report

Orbit 53285

Creation date: 2025-08-04T12:11:03.301318
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_011T08_9000006492_53285cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53285cztM0_level2_quad_clean.evt
Size (bytes)731,934,72088,225,920
Size698.0 MB 84.1 MB
Events in quadrant A3,450,021643,521
Events in quadrant B4,301,674683,106
Events in quadrant C14,457,642278,690
Events in quadrant D4,346,184581,975

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155661
B0179451
C0476631
D0180771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69391201.729356%
B69392653.818994%
C6940419560.446686%
D69402133.069164%

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 7184 6940 42 42 0.58% 0.61%
B 7184 6940 136 136 1.89% 1.96%
C 7185 6941 4282 4282 59.60% 61.69%
D 7185 6941 201 201 2.80% 2.90%

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 12 115 128227 722.38 713 694 176.5
A 4 249 120877 680.75 713 694 176.5
A 3 27 77280 433.8 713 694 176.5
B 2 249 474931 3202.39 705 681 148.1
B 10 28 188635 1269.17 705 681 148.1
B 0 213 172894 1162.87 705 681 148.1
C 1 241 8250736 61946.74 479 474 133.2
C 15 224 1066386 8003.35 479 474 133.2
C 10 22 764826 5739.1 479 474 133.2
D 11 245 678111 3463.06 686 654 195.6
D 3 12 260648 1329.05 686 654 195.6
D 12 3 174354 887.93 686 654 195.6

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