ASTROSAT CZTI

Data Quality Report

Orbit 20240519_T05_205T01_9000006260_level2

Creation date: 2024-05-21T09:18:27.484292
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_205T01_9000006260cztM0_level2.fits modeM0/AS1T05_205T01_9000006260cztM0_level2_quad_clean.evt
Size (bytes)510,209,280512,544,960
Size486.6 MB 488.8 MB
Events in quadrant A2,953,0982,949,296
Events in quadrant B2,900,6083,042,998
Events in quadrant C3,045,0282,920,704
Events in quadrant D2,508,3762,568,144

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011920
B011920
C011920
D011920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01995110
B01478410
C01241150
D01662210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5891221023.568034%
B5891221903.717409%
C589145901.001460%
D5890848228.185645%

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 64934 58911 0 0 0.00% 0.00%
B 64934 58904 0 0 0.00% 0.00%
C 64934 58909 0 0 0.00% 0.00%
D 64934 58695 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 7 110 2416 8.42 770 716 201.9
A 0 29 2251 7.6 770 716 201.9
A 14 95 2210 7.4 770 716 201.9
B 2 9 2741 13.26 764 724 152.1
B 2 8 2111 9.12 764 724 152.1
B 3 17 2080 8.92 764 724 152.1
C 1 81 2356 7.58 803 744 212.7
C 1 80 2257 7.11 803 744 212.7
C 3 203 2229 6.98 803 744 212.7
D 15 47 1826 5.87 718 650 200.2
D 3 14 1807 5.78 718 650 200.2
D 4 16 1785 5.67 718 650 200.2

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