ASTROSAT CZTI

Data Quality Report

Orbit 59372

Creation date: 2026-09-18T00:20:27.088139
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_033T01_9000006608_59372cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59372cztM0_level2_quad_clean.evt
Size (bytes)608,765,76093,035,520
Size580.6 MB 88.7 MB
Events in quadrant A3,049,099662,003
Events in quadrant B3,509,739714,890
Events in quadrant C3,242,506640,344
Events in quadrant D12,216,413335,749

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140053
B0149592
C0144392
D0408822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6651711.067509%
B66511321.984664%
C6651771.157721%
D6651331349.812058%

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 7656 6652 6 6 0.08% 0.09%
B 7656 6651 14 14 0.18% 0.21%
C 7656 6651 26 26 0.34% 0.39%
D 7656 6651 3216 3216 42.01% 48.35%

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 14 238 107138 581.83 742 723 182.9
A 3 245 25625 136.15 742 723 182.9
A 10 251 13714 71.03 742 723 182.9
B 5 236 249167 1587.29 735 706 156.5
B 4 171 130307 827.96 735 706 156.5
B 5 185 76008 481.07 735 706 156.5
C 6 223 94708 467.54 732 724 201.0
C 4 5 57081 280.36 732 724 201.0
C 12 252 56446 277.2 732 724 201.0
D 12 110 9158305 54051.46 596 569 169.4
D 1 27 329081 1938.97 596 569 169.4
D 12 2 282974 1666.83 596 569 169.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct