ASTROSAT CZTI

Data Quality Report

Orbit 21266

Creation date: 2024-06-27T18:25:38.791826
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_037T01_9000003140_21266cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21266cztM0_level2_quad_clean.evt
Size (bytes)483,350,40098,556,480
Size461.0 MB 94.0 MB
Events in quadrant A3,340,959633,420
Events in quadrant B3,529,089644,461
Events in quadrant C3,356,962623,395
Events in quadrant D3,939,662599,579

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144752
B0149492
C0144602
D0164012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6947440.633367%
B6947751.079603%
C6947690.993234%
D69471632.346337%

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 7702 6949 0 0 0.00% 0.00%
B 7702 6949 13 13 0.17% 0.19%
C 7702 6949 0 0 0.00% 0.00%
D 7702 6949 87 87 1.13% 1.25%

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 9 143 13437 72.66 857 840 173.4
A 13 254 9889 52.19 857 840 173.4
A 12 96 8082 41.77 857 840 173.4
B 3 64 57889 344.84 856 834 165.5
B 0 230 49041 291.36 856 834 165.5
B 0 190 41209 244.03 856 834 165.5
C 14 238 126168 652.55 819 826 192.1
C 3 233 17960 89.2 819 826 192.1
C 0 10 13165 64.24 819 826 192.1
D 12 235 318674 1583.18 825 801 200.8
D 1 52 94758 467.96 825 801 200.8
D 13 174 82031 404.57 825 801 200.8

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