ASTROSAT CZTI

Data Quality Report

Orbit 54263

Creation date: 2025-10-10T13:05:55.470993
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/AS1C09_004T08_9000006514_54263cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54263cztM0_level2_quad_clean.evt
Size (bytes)1,827,351,360248,126,400
Size1.7 GB 236.6 MB
Events in quadrant A13,056,1401,720,277
Events in quadrant B16,633,2541,732,984
Events in quadrant C22,795,3601,239,703
Events in quadrant D13,650,5451,474,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0528362
B0629472
C0814782
D0545867

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1951010175.212711%
B19511233711.977859%
C19511517326.513249%
D1951014477.416709%

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 20520 19512 872 872 4.25% 4.47%
B 20521 19513 1792 1792 8.73% 9.18%
C 20521 19513 4801 4801 23.40% 24.60%
D 20519 19511 1354 1354 6.60% 6.94%

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 29 2096249 4189.32 2025 1972 499.9
A 15 174 736642 1469.61 2025 1972 499.9
A 12 17 725665 1447.65 2025 1972 499.9
B 5 250 3071245 7337.93 1976 1905 418.3
B 5 236 1614970 3856.38 1976 1905 418.3
B 5 185 1607099 3837.57 1976 1905 418.3
C 1 241 9176838 19426.38 1729 1713 472.3
C 1 29 4474615 9470.42 1729 1713 472.3
C 12 252 876925 1853.08 1729 1713 472.3
D 8 176 3966627 7214.72 1927 1835 549.5
D 13 170 501493 909.23 1927 1835 549.5
D 15 159 470730 853.25 1927 1835 549.5

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