ASTROSAT CZTI

Data Quality Report

Orbit 20231023_A12_068T05_9000005894_level2

Creation date: 2023-10-27T12:32:54.890288
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/AS1A12_068T05_9000005894cztM0_level2.fits modeM0/AS1A12_068T05_9000005894cztM0_level2_quad_clean.evt
Size (bytes)986,374,0801,074,398,400
Size940.7 MB 1.0 GB
Events in quadrant A7,050,3168,608,220
Events in quadrant B6,771,5408,684,602
Events in quadrant C3,057,0281,845,368
Events in quadrant D3,573,6344,064,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027650
B027610
C027680
D027700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01570
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03929560
B03710760
C010741640
D08268310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13609361154.493251%
B13611175265.529311%
C13588411865587.320803%
D1358957147352.594282%

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 157366 136097 0 0 0.00% 0.00%
B 157366 136122 0 0 0.00% 0.00%
C 157365 133094 0 0 0.00% 0.00%
D 157365 123718 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 6053 9.54 1847 1737 452.6
A 7 110 5801 8.98 1847 1737 452.6
A 0 30 5688 8.73 1847 1737 452.6
B 2 9 6047 12.45 1797 1713 348.2
B 3 17 5044 9.57 1797 1713 348.2
B 2 8 4882 9.1 1797 1713 348.2
C 3 202 2458 8.2 811 756 207.6
C 1 80 2440 8.11 811 756 207.6
C 1 81 2409 7.96 811 756 207.6
D 15 46 2782 6.45 1043 946 284.8
D 10 189 2713 6.2 1043 946 284.8
D 6 67 2668 6.05 1043 946 284.8

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