ASTROSAT CZTI

Data Quality Report

Orbit 20210524_A10_053T23_9000004404_level2

Creation date: 2025-12-26T02:36:50.853502
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/AS1A10_053T23_9000004404cztM0_level2.fits modeM0/AS1A10_053T23_9000004404cztM0_level2_quad_clean.evt
Size (bytes)534,432,960324,622,080
Size509.7 MB 309.6 MB
Events in quadrant A3,420,7501,668,601
Events in quadrant B3,164,2741,645,812
Events in quadrant C3,198,4801,552,159
Events in quadrant D2,900,1401,460,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010440
B010440
C010440
D010440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01088140
B01579490
C01137480
D01270960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510128571.679997%
B5101217633.456050%
C5101220574.032385%
D5101216813.295303%

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 59917 51011 0 0 0.00% 0.00%
B 59917 51012 0 0 0.00% 0.00%
C 59917 51000 0 0 0.00% 0.00%
D 59917 50999 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 3139 10.71 891 840 214.7
A 9 19 2544 7.94 891 840 214.7
A 7 110 2542 7.93 891 840 214.7
B 2 9 2472 10.14 835 800 164.9
B 3 80 2197 8.47 835 800 164.9
B 2 8 2060 7.64 835 800 164.9
C 1 80 2476 7.82 845 793 215.3
C 1 81 2369 7.32 845 793 215.3
C 12 241 2217 6.61 845 793 215.3
D 15 46 2104 6.26 829 760 214.6
D 10 189 2101 6.25 829 760 214.6
D 6 67 2019 5.87 829 760 214.6

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