ASTROSAT CZTI

Data Quality Report

Orbit 20240813_T05_218T01_9000006386_level2

Creation date: 2024-08-16T18:00:15.295058
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_218T01_9000006386cztM0_level2.fits modeM0/AS1T05_218T01_9000006386cztM0_level2_quad_clean.evt
Size (bytes)460,630,080435,692,160
Size439.3 MB 415.5 MB
Events in quadrant A2,552,9182,242,253
Events in quadrant B2,670,4982,605,597
Events in quadrant C2,746,9382,518,003
Events in quadrant D2,329,0942,181,595

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010800
B010800
C010800
D010800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02241130
B01131290
C01135250
D01390280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53148657812.376759%
B531507411.394167%
C531525511.036650%
D5314720233.806424%

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 65851 53157 0 0 0.00% 0.00%
B 65851 53157 0 0 0.00% 0.00%
C 65851 53157 0 0 0.00% 0.00%
D 65851 53147 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 2071 8.26 665 618 175.9
A 14 95 2034 8.05 665 618 175.9
A 0 29 2023 7.99 665 618 175.9
B 2 9 2492 13.17 703 669 138.5
B 2 8 2003 9.63 703 669 138.5
B 3 17 1903 8.91 703 669 138.5
C 1 81 2129 7.76 726 674 187.4
C 3 202 2116 7.69 726 674 187.4
C 1 80 2042 7.3 726 674 187.4
D 15 47 1722 5.93 668 605 188.3
D 6 38 1694 5.78 668 605 188.3
D 10 189 1687 5.75 668 605 188.3

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