ASTROSAT CZTI

Data Quality Report

Orbit 20230917_T05_153T01_9000005848_level2

Creation date: 2023-09-18T13:45:40.432797
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/AS1T05_153T01_9000005848cztM0_level2.fits modeM0/AS1T05_153T01_9000005848cztM0_level2_quad_clean.evt
Size (bytes)516,182,400783,984,960
Size492.3 MB 747.7 MB
Events in quadrant A3,058,2485,126,041
Events in quadrant B2,943,0265,147,550
Events in quadrant C3,000,1684,934,187
Events in quadrant D2,628,0784,536,957

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011920
B011920
C011920
D011920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01450660
B01249640
C01251920
D01353240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5833916802.879720%
B583393790.649651%
C583393990.683934%
D5833910691.832393%

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 78778 58290 0 0 0.00% 0.00%
B 78778 58338 0 0 0.00% 0.00%
C 78778 58332 0 0 0.00% 0.00%
D 78778 58308 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 9 19 2548 8.9 798 750 202.1
A 7 110 2504 8.68 798 750 202.1
A 0 29 2489 8.61 798 750 202.1
B 2 9 2556 12.02 777 743 150.9
B 3 80 2192 9.6 777 743 150.9
B 2 8 2105 9.03 777 743 150.9
C 1 81 2492 8.59 793 743 203.5
C 3 202 2400 8.14 793 743 203.5
C 3 203 2378 8.03 793 743 203.5
D 6 38 1979 6.38 751 683 203.0
D 3 14 1972 6.35 751 683 203.0
D 7 3 1971 6.34 751 683 203.0

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