ASTROSAT CZTI

Data Quality Report

Orbit 58430

Creation date: 2026-07-16T16:54:28.583617
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_045T01_9000006590_58430cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58430cztM0_level2_quad_clean.evt
Size (bytes)1,564,611,840381,024,000
Size1.5 GB 363.4 MB
Events in quadrant A12,171,4142,492,495
Events in quadrant B15,677,9192,640,397
Events in quadrant C13,469,6952,393,858
Events in quadrant D14,585,5692,222,717

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05280
B05280
C05280
D05280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0549583
B0642463
C0588833
D0618013

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A259864961.908720%
B2598611924.587085%
C259865642.170399%
D259877102.732135%

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 31264 25992 27 27 0.09% 0.10%
B 31264 25992 407 407 1.30% 1.57%
C 31264 25992 263 263 0.84% 1.01%
D 31264 25993 397 397 1.27% 1.53%

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 12 114 189618 257.83 2957 2884 724.3
A 2 143 148918 201.63 2957 2884 724.3
A 12 80 100208 134.38 2957 2884 724.3
B 5 172 2304970 3751.49 2889 2780 613.7
B 4 171 459334 743.97 2889 2780 613.7
B 10 247 433472 701.83 2889 2780 613.7
C 12 252 825673 1058.51 2846 2822 777.4
C 5 10 477367 610.45 2846 2822 777.4
C 14 254 143497 180.96 2846 2822 777.4
D 8 240 1500206 1874.57 2842 2717 798.8
D 2 120 570406 710.64 2842 2717 798.8
D 12 248 520431 648.08 2842 2717 798.8

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