ASTROSAT CZTI

Data Quality Report

Orbit 58799

Creation date: 2026-08-10T12:25:51.765658
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_106T01_9000006596_58799cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58799cztM0_level2_quad_clean.evt
Size (bytes)649,425,600104,544,000
Size619.3 MB 99.7 MB
Events in quadrant A4,061,491727,037
Events in quadrant B4,108,401778,505
Events in quadrant C4,072,987688,163
Events in quadrant D11,213,799449,043

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170512
B0172022
C0174752
D0384682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75081532.037826%
B75092122.823279%
C75092573.422560%
D7509270335.996804%

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 9303 7508 52 52 0.56% 0.69%
B 9304 7509 50 50 0.54% 0.67%
C 9304 7509 194 194 2.09% 2.58%
D 9304 7509 2565 2565 27.57% 34.16%

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 3 14 316635 1479.99 858 835 213.4
A 15 233 169488 790.39 858 835 213.4
A 13 248 101773 473.04 858 835 213.4
B 4 236 135911 743.08 847 816 181.8
B 10 247 131604 719.39 847 816 181.8
B 5 172 93144 507.84 847 816 181.8
C 15 198 508073 2259.76 821 819 224.5
C 13 3 169154 749.91 821 819 224.5
C 9 38 52956 232.26 821 819 224.5
D 12 110 4881153 23981.0 713 681 203.5
D 11 129 2947857 14481.43 713 681 203.5
D 2 249 386569 1896.12 713 681 203.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct