ASTROSAT CZTI

Data Quality Report

Orbit 20190608_C04_005T01_9000002976_level2

Creation date: 2025-12-01T07:43:45.680296
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/AS1C04_005T01_9000002976cztM0_level2.fits modeM0/AS1C04_005T01_9000002976cztM0_level2_quad_clean.evt
Size (bytes)395,493,120273,168,000
Size377.2 MB 260.5 MB
Events in quadrant A1,191,934582,516
Events in quadrant B2,695,3281,702,372
Events in quadrant C2,741,1881,584,921
Events in quadrant D2,383,3241,450,538

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02882740
B0939420
C0991030
D01158370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08740
B08740
C08740
D08740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A429653235475.303154%
B429655651.315024%
C429659522.215757%
D4296528006.516932%

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 52079 35553 0 0 0.00% 0.00%
B 52079 42955 0 0 0.00% 0.00%
C 52080 42955 0 0 0.00% 0.00%
D 52080 42955 0 0 0.00% 0.00%

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 14 188 1189 11.66 310 291 77.0
A 0 29 1118 10.73 310 291 77.0
A 7 110 963 8.72 310 291 77.0
B 2 9 2045 9.69 712 682 140.7
B 2 8 1763 7.69 712 682 140.7
B 5 255 1760 7.66 712 682 140.7
C 1 80 2013 7.22 723 679 184.7
C 1 81 1987 7.08 723 679 184.7
C 3 126 1874 6.47 723 679 184.7
D 3 14 1670 5.84 682 624 179.1
D 6 231 1653 5.74 682 624 179.1
D 7 3 1650 5.72 682 624 179.1

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