ASTROSAT CZTI

Data Quality Report

Orbit 47691

Creation date: 2024-07-23T15:17:22.727923
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/AS1A13_082T01_9000006342_47691cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47691cztM0_level2_quad_clean.evt
Size (bytes)509,123,520117,754,560
Size485.5 MB 112.3 MB
Events in quadrant A7,359,787770,352
Events in quadrant B3,668,157810,651
Events in quadrant C3,173,037784,247
Events in quadrant D4,105,789715,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268942
B0155122
C0143062
D0168442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69553034.356578%
B69551321.897915%
C6955650.934579%
D69551492.142344%

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 8055 6955 95 95 1.18% 1.37%
B 8055 6955 33 33 0.41% 0.47%
C 8055 6955 1 1 0.01% 0.01%
D 8055 6955 71 71 0.88% 1.02%

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 10 83 3928037 23480.46 802 784 167.3
A 9 191 325430 1941.01 802 784 167.3
A 13 6 13174 74.08 802 784 167.3
B 0 200 444554 2799.37 805 781 158.5
B 0 190 23409 142.74 805 781 158.5
B 12 111 20146 122.16 805 781 158.5
C 14 254 19991 100.94 806 813 190.0
C 3 233 7254 33.9 806 813 190.0
C 13 61 5409 24.19 806 813 190.0
D 10 181 453352 2271.63 804 781 199.2
D 2 165 169102 844.87 804 781 199.2
D 12 218 121377 605.32 804 781 199.2

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