ASTROSAT CZTI

Data Quality Report

Orbit 20230715_A12_088T23_9000005762_level2

Creation date: 2023-07-21T13:09:58.345736
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_088T23_9000005762cztM0_level2.fits modeM0/AS1A12_088T23_9000005762cztM0_level2_quad_clean.evt
Size (bytes)76,720,32068,808,960
Size73.2 MB 65.6 MB
Events in quadrant A450,646377,928
Events in quadrant B444,472394,716
Events in quadrant C457,066380,887
Events in quadrant D375,956334,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209650
B0188290
C0172650
D0259670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85731661.936312%
B8573390.454917%
C857350.058323%
D85736027.022046%

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 12698 8571 0 0 0.00% 0.00%
B 12698 8572 0 0 0.00% 0.00%
C 12698 8572 0 0 0.00% 0.00%
D 12698 8563 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 29 380 8.63 117 110 31.3
A 14 95 375 8.47 117 110 31.3
A 7 110 372 8.37 117 110 31.3
B 2 9 375 10.26 117 112 25.6
B 2 8 329 8.47 117 112 25.6
B 5 128 324 8.27 117 112 25.6
C 1 81 373 8.09 120 113 32.1
C 1 80 345 7.22 120 113 32.1
C 3 203 341 7.1 120 113 32.1
D 6 67 311 7.09 107 97 30.2
D 11 66 287 6.29 107 97 30.2
D 3 14 286 6.26 107 97 30.2

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