ASTROSAT CZTI

Data Quality Report

Orbit 20251121_A14_014T01_9000006528_level2

Creation date: 2025-12-16T02:30:02.634989
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_014T01_9000006528cztM0_level2.fits modeM0/AS1A14_014T01_9000006528cztM0_level2_quad_clean.evt
Size (bytes)4,442,112,0001,471,924,800
Size4.1 GB 1.4 GB
Events in quadrant A32,543,3134,701,174
Events in quadrant B32,329,5015,134,144
Events in quadrant C29,433,7984,502,203
Events in quadrant D11,487,2401,599,668

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011873540
B09245560
C011657960
D023709980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084770
B084830
C086650
D089090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05400
B05370
C05410
D05380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A424233331057.803495%
B42487084081.978958%
C425332267266.283562%
D42762720975349.050458%

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 594965 430656 0 0 0.00% 0.00%
B 529003 417285 0 0 0.00% 0.00%
C 512758 407200 0 0 0.00% 0.00%
D 594963 392680 0 0 0.00% 0.00%

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 14 188 26966 8.52 8611 8197 2203.4
A 9 255 22989 6.71 8611 8197 2203.4
A 14 204 22694 6.58 8611 8197 2203.4
B 2 9 26453 10.05 8671 8325 1803.7
B 2 8 23234 8.27 8671 8325 1803.7
B 3 25 20759 6.89 8671 8325 1803.7
C 6 179 21457 6.28 7923 7534 2217.2
C -1 -1 -1 -1.0 7923 7534 2217.2
C -1 -1 -1 -1.0 7923 7534 2217.2
D 6 218 14444 10.55 3291 2916 1093.1
D 3 30 10767 7.18 3291 2916 1093.1
D 8 12 10602 7.03 3291 2916 1093.1

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