ASTROSAT CZTI

Data Quality Report

Orbit 20200316_A07_047T01_9000003572_level2

Creation date: 2025-12-10T02:01:12.408944
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/AS1A07_047T01_9000003572cztM0_level2.fits modeM0/AS1A07_047T01_9000003572cztM0_level2_quad_clean.evt
Size (bytes)149,261,760192,502,080
Size142.3 MB 183.6 MB
Events in quadrant A935,6801,271,232
Events in quadrant B889,1701,253,901
Events in quadrant C876,3221,172,932
Events in quadrant D784,5281,096,867

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310120
B0314620
C0323410
D0357180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149961981.320352%
B149962071.380368%
C149963902.600694%
D149963692.460656%

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 17691 14995 0 0 0.00% 0.00%
B 17691 14995 0 0 0.00% 0.00%
C 17691 14989 0 0 0.00% 0.00%
D 17691 14996 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 0 29 909 11.16 243 232 60.6
A 7 110 756 8.64 243 232 60.6
A 0 30 704 7.78 243 232 60.6
B 2 9 723 10.33 235 226 48.1
B 2 8 618 8.14 235 226 48.1
B 5 255 588 7.52 235 226 48.1
C 9 188 625 6.76 231 218 60.2
C 12 241 611 6.52 231 218 60.2
C 12 249 610 6.51 231 218 60.2
D 4 160 584 6.2 223 203 61.4
D 6 67 557 5.76 223 203 61.4
D 10 189 555 5.73 223 203 61.4

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