ASTROSAT CZTI

Data Quality Report

Orbit 53286

Creation date: 2025-08-04T12:35:59.349947
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_53286cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53286cztM0_level2_quad_clean.evt
Size (bytes)814,959,36083,064,960
Size777.2 MB 79.2 MB
Events in quadrant A3,329,438652,430
Events in quadrant B5,213,886678,664
Events in quadrant C17,487,02096,546
Events in quadrant D3,588,968595,597

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151540
B0205510
C0565570
D0158420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7056260.368481%
B70573935.568939%
C7057611486.637381%
D7057560.793538%

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 7056 7056 15 15 0.21% 0.21%
B 7057 7057 194 194 2.75% 2.75%
C 7057 7057 6074 6074 86.07% 86.07%
D 7057 7057 52 52 0.74% 0.74%

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 7 206 156095 865.77 721 702 179.5
A 3 27 64928 357.84 721 702 179.5
A 4 159 54381 299.07 721 702 179.5
B 10 28 1404742 9260.83 710 685 151.6
B 4 81 253292 1666.14 710 685 151.6
B 2 249 201259 1322.94 710 685 151.6
C 1 241 12748878 139028.42 332 330 91.7
C 15 178 1174793 12808.03 332 330 91.7
C 15 224 1096286 11951.87 332 330 91.7
D 3 12 151253 755.55 701 672 199.3
D 12 3 144074 719.53 701 672 199.3
D 2 249 113336 565.3 701 672 199.3

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