ASTROSAT CZTI

Data Quality Report

Orbit 21020

Creation date: 2024-06-27T18:22:35.385186
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/AS1A05_075T06_9000003104_21020cztM0_level2.evt modeM0/AS1A05_075T06_9000003104_21020cztM0_level2_quad_clean.evt
Size (bytes)461,658,24094,674,240
Size440.3 MB 90.3 MB
Events in quadrant A3,252,343607,943
Events in quadrant B3,651,430611,890
Events in quadrant C3,273,916587,531
Events in quadrant D3,333,522577,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141022
B0151132
C0141202
D0145142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6917690.997542%
B69171381.995085%
C6917881.272228%
D6917540.780685%

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 7647 6919 0 0 0.00% 0.00%
B 7647 6919 32 32 0.42% 0.46%
C 7647 6919 0 0 0.00% 0.00%
D 7647 6919 6 6 0.08% 0.09%

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 0 226 7333 38.37 841 823 169.7
A 15 174 7326 38.33 841 823 169.7
A 13 254 7130 37.17 841 823 169.7
B 7 220 252942 1600.5 836 816 157.5
B 0 189 21118 128.88 836 816 157.5
B 3 64 20102 122.43 836 816 157.5
C 14 238 127768 674.71 804 807 188.2
C 13 61 5694 25.97 804 807 188.2
C 12 2 4829 21.37 804 807 188.2
D 1 20 154313 778.36 814 793 197.2
D 2 234 28947 142.74 814 793 197.2
D 1 52 26548 130.58 814 793 197.2

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