ASTROSAT CZTI

Data Quality Report

Orbit 57358

Creation date: 2026-05-05T14:20:08.165856
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/AS1A14_102T01_9000006572_57358cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57358cztM0_level2_quad_clean.evt
Size (bytes)1,506,896,640223,655,040
Size1.4 GB 213.3 MB
Events in quadrant A10,604,1721,473,453
Events in quadrant B9,378,2131,486,264
Events in quadrant C21,032,5081,242,383
Events in quadrant D13,248,0531,216,026

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0456022
B0421422
C0761122
D0533692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196224862.476812%
B196223471.768423%
C19622375519.136683%
D1962210435.315462%

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 20814 19906 263 263 1.26% 1.32%
B 20814 19904 77 77 0.37% 0.39%
C 20814 19906 2924 2924 14.05% 14.69%
D 20814 19876 847 847 4.07% 4.26%

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 14 1443950 2749.17 2124 2071 524.5
A 13 248 700623 1331.9 2124 2071 524.5
A 0 12 90482 168.57 2124 2071 524.5
B 5 185 413820 914.65 2109 2025 450.2
B 10 247 140321 307.17 2109 2025 450.2
B 7 252 105429 229.67 2109 2025 450.2
C 15 224 12196381 23792.72 1903 1882 512.5
C 12 252 416929 809.8 1903 1882 512.5
C 14 254 387801 752.97 1903 1882 512.5
D 2 249 3340268 5926.12 2017 1924 563.3
D 8 240 669433 1184.94 2017 1924 563.3
D 2 31 442365 781.86 2017 1924 563.3

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