ASTROSAT CZTI

Data Quality Report

Orbit 53998

Creation date: 2025-09-22T20:12:25.286431
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_041T01_9000006510_53998cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53998cztM0_level2_quad_clean.evt
Size (bytes)647,089,920105,048,000
Size617.1 MB 100.2 MB
Events in quadrant A3,720,261701,895
Events in quadrant B3,787,178777,734
Events in quadrant C7,725,804651,970
Events in quadrant D8,122,410512,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170530
B0169630
C0283572
D0298260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77071602.076035%
B7708750.973015%
C77074666.046451%
D7707159220.656546%

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 7707 7707 147 147 1.91% 1.91%
B 7708 7708 40 40 0.52% 0.52%
C 7707 7707 515 515 6.68% 6.68%
D 7707 7707 1615 1615 20.95% 20.95%

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 15 174 516836 2665.72 782 761 193.6
A 4 249 46142 234.41 782 761 193.6
A 0 8 27755 139.43 782 761 193.6
B 0 213 251119 1475.72 793 763 169.7
B 7 0 193044 1133.4 793 763 169.7
B 4 81 44903 260.18 793 763 169.7
C 10 171 2722441 13056.68 761 755 208.5
C 14 80 780575 3741.01 761 755 208.5
C 1 241 561444 2689.78 761 755 208.5
D 8 176 3877039 20054.05 676 646 193.3
D 2 165 662287 3422.92 676 646 193.3
D 6 239 354889 1832.63 676 646 193.3

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