ASTROSAT CZTI

Data Quality Report

Orbit 54505

Creation date: 2025-10-25T14:13:01.346992
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_127T09_9000006520_54505cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54505cztM0_level2_quad_clean.evt
Size (bytes)475,868,160113,912,640
Size453.8 MB 108.6 MB
Events in quadrant A3,652,681743,755
Events in quadrant B4,021,651783,870
Events in quadrant C4,987,933704,077
Events in quadrant D4,337,507667,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167493
B0179033
C0205674
D0187493

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79111662.098344%
B79113214.057641%
C79102933.704172%
D79101882.376738%

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 8026 7913 13 13 0.16% 0.16%
B 8026 7913 43 43 0.54% 0.54%
C 8025 7912 148 148 1.84% 1.87%
D 8025 7912 80 80 1.00% 1.01%

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 4 3 70923 321.56 891 866 217.9
A 8 249 41747 187.64 891 866 217.9
A 3 14 23661 104.63 891 866 217.9
B 5 172 203479 1066.22 875 840 190.1
B 5 185 107906 563.35 875 840 190.1
B 0 213 103596 540.67 875 840 190.1
C 4 5 994764 4188.58 858 851 237.3
C 7 64 229566 963.86 858 851 237.3
C 6 223 140237 587.4 858 851 237.3
D 3 12 410780 1665.3 859 821 246.2
D 2 172 237583 961.76 859 821 246.2
D 8 160 102432 412.76 859 821 246.2

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