ASTROSAT CZTI

Data Quality Report

Orbit 18470

Creation date: 2024-06-27T17:50:08.948977
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_072T02_9000002736_18470cztM0_level2.evt modeM0/AS1A05_072T02_9000002736_18470cztM0_level2_quad_clean.evt
Size (bytes)507,199,680102,968,640
Size483.7 MB 98.2 MB
Events in quadrant A4,018,512664,612
Events in quadrant B4,000,667699,521
Events in quadrant C3,305,986663,055
Events in quadrant D3,593,144636,685

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162132
B0160612
C0138332
D0150212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65192233.420770%
B65192533.880963%
C65181041.595581%
D65181061.626266%

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 7809 6519 111 111 1.42% 1.70%
B 7809 6519 105 105 1.34% 1.61%
C 7808 6519 6 6 0.08% 0.09%
D 7808 6519 72 72 0.92% 1.10%

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 13 607333 3650.52 828 812 166.1
A 15 174 108694 649.32 828 812 166.1
A 4 2 101019 603.12 828 812 166.1
B 10 245 676574 4226.29 839 819 159.9
B 12 111 18420 110.08 839 819 159.9
B 11 111 15930 94.51 839 819 159.9
C 14 238 127759 677.05 809 817 187.5
C 9 54 21912 112.51 809 817 187.5
C 13 61 5834 26.76 809 817 187.5
D 7 238 228098 1164.1 806 786 195.3
D 13 249 125271 637.51 806 786 195.3
D 12 110 75094 380.54 806 786 195.3

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