ASTROSAT CZTI

Data Quality Report

Orbit 58226

Creation date: 2026-07-03T10:59:23.588382
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_044T03_9000006588_58226cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58226cztM0_level2_quad_clean.evt
Size (bytes)681,719,04092,001,600
Size650.1 MB 87.7 MB
Events in quadrant A3,137,104656,605
Events in quadrant B8,588,432560,539
Events in quadrant C3,231,293631,350
Events in quadrant D9,744,948457,119

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01449111
B030444111
C01489625
D033882103

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6891280.406327%
B6876172325.058173%
C6886390.566367%
D6879182226.486408%

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 6896 6896 4 4 0.06% 0.06%
B 6895 6889 1368 1368 19.84% 19.86%
C 6897 6897 29 29 0.42% 0.42%
D 6897 6889 1673 1673 24.26% 24.29%

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 3 245 43859 228.38 761 741 188.8
A 13 248 42664 222.05 761 741 188.8
A 3 14 35352 183.32 761 741 188.8
B 10 128 2892207 19311.02 692 666 149.7
B 5 185 1498187 10001.12 692 666 149.7
B 2 249 823933 5498.15 692 666 149.7
C 12 252 94530 459.52 741 736 204.1
C 6 223 82518 400.67 741 736 204.1
C 12 249 80405 390.32 741 736 204.1
D 12 110 5880088 30800.35 665 636 190.9
D 6 239 331306 1732.26 665 636 190.9
D 8 240 233558 1220.2 665 636 190.9

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