ASTROSAT CZTI

Data Quality Report

Orbit 46876

Creation date: 2024-06-27T23:28:50.179123
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_053T01_9000006274_46876cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46876cztM0_level2_quad_clean.evt
Size (bytes)461,736,000107,380,800
Size440.3 MB 102.4 MB
Events in quadrant A6,227,914703,144
Events in quadrant B3,414,236729,244
Events in quadrant C3,007,965706,986
Events in quadrant D3,919,116643,255

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223313
B0146541
C0140041
D0163971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67331632.420912%
B6733911.351552%
C6734711.054351%
D67342002.970003%

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 7663 6733 7 7 0.09% 0.10%
B 7663 6733 19 19 0.25% 0.28%
C 7664 6735 25 25 0.33% 0.37%
D 7664 6734 127 127 1.66% 1.89%

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 3303840 21620.67 738 720 152.8
A 13 6 24737 157.2 738 720 152.8
A 13 248 20731 130.98 738 720 152.8
B 3 112 253968 1741.84 730 707 145.4
B 15 36 94664 646.2 730 707 145.4
B 5 32 51277 347.8 730 707 145.4
C 14 254 136191 790.22 727 730 171.4
C 1 3 39371 225.42 727 730 171.4
C 13 61 4752 23.46 727 730 171.4
D 13 249 440130 2400.63 729 707 183.0
D 1 52 364194 1985.78 729 707 183.0
D 2 249 187077 1018.17 729 707 183.0

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