ASTROSAT CZTI

Data Quality Report

Orbit 56265

Creation date: 2026-02-23T02:34:28.291319
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_049T01_9000006552_56265cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56265cztM0_level2_quad_clean.evt
Size (bytes)936,492,48080,807,040
Size893.1 MB 77.1 MB
Events in quadrant A13,922,767276,866
Events in quadrant B4,172,639704,850
Events in quadrant C10,823,597395,785
Events in quadrant D5,193,469570,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0463926
B0173730
C0371250
D0204980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7152440261.549217%
B71521862.600671%
C7153305742.737313%
D71534536.333007%

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 7152 7152 4001 4001 55.94% 55.94%
B 7152 7152 122 122 1.71% 1.71%
C 7153 7153 2290 2290 32.01% 32.01%
D 7153 7153 418 418 5.84% 5.84%

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 8 176 4820501 37598.5 511 500 128.2
A 14 235 4299391 33533.57 511 500 128.2
A 15 32 997003 7773.24 511 500 128.2
B 4 171 219074 1387.92 742 718 157.3
B 5 185 211681 1340.93 742 718 157.3
B 0 171 199053 1260.66 742 718 157.3
C 15 230 4254496 26971.78 576 573 157.7
C 12 254 2882570 18273.15 576 573 157.7
C 5 250 405450 2567.1 576 573 157.7
D 8 129 1016432 4989.66 710 678 203.6
D 2 249 468535 2298.24 710 678 203.6
D 2 31 338713 1660.52 710 678 203.6

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