ASTROSAT CZTI

Data Quality Report

Orbit 57484

Creation date: 2026-05-14T00:24:10.829289
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_113T09_9000006574_57484cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57484cztM0_level2_quad_clean.evt
Size (bytes)480,130,56098,288,640
Size457.9 MB 93.7 MB
Events in quadrant A3,389,502655,579
Events in quadrant B4,683,451661,989
Events in quadrant C5,314,513594,035
Events in quadrant D3,847,399581,804

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150601
B0186901
C0207121
D0164191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6920751.083815%
B69215247.571160%
C69214977.181043%
D69211842.658575%

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 7250 6921 15 15 0.21% 0.22%
B 7251 6922 257 257 3.54% 3.71%
C 7251 6922 428 428 5.90% 6.18%
D 7251 6922 139 139 1.92% 2.01%

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 64 321636 1729.89 749 728 185.5
A 3 14 45142 239.42 749 728 185.5
A 13 248 30510 160.54 749 728 185.5
B 4 206 1213569 7849.68 718 690 154.5
B 10 247 282225 1822.08 718 690 154.5
B 0 245 102026 655.84 718 690 154.5
C 15 224 2118762 11136.35 699 693 190.2
C 14 254 199346 1044.47 699 693 190.2
C 14 245 188224 986.0 699 693 190.2
D 3 12 322144 1611.17 713 681 199.5
D 2 249 272910 1364.41 713 681 199.5
D 2 252 145146 724.06 713 681 199.5

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