ASTROSAT CZTI

Data Quality Report

Orbit 20240123_A13_020T01_9000006040_level2

Creation date: 2024-02-02T21:11:18.049105
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_020T01_9000006040cztM0_level2.fits modeM0/AS1A13_020T01_9000006040cztM0_level2_quad_clean.evt
Size (bytes)4,058,432,6403,879,970,560
Size3.8 GB 3.6 GB
Events in quadrant A24,288,72622,709,620
Events in quadrant B23,479,55623,018,936
Events in quadrant C24,657,14122,388,967
Events in quadrant D19,086,74818,042,384

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093040
B093040
C093060
D093000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05910
B05910
C05930
D05920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015080810
B010857410
C09978250
D019085670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A457742179343.917928%
B457790169523.703008%
C45779481481.779840%
D4576438066817.626840%

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 521658 457854 0 0 0.00% 0.00%
B 521658 457826 0 0 0.00% 0.00%
C 521658 457722 0 0 0.00% 0.00%
D 521658 456410 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 19788 8.66 6337 5900 1604.1
A 15 236 19639 8.57 6337 5900 1604.1
A 0 29 18868 8.08 6337 5900 1604.1
B 2 9 22015 13.35 6219 5906 1206.8
B 2 8 17723 9.79 6219 5906 1206.8
B 3 17 17199 9.36 6219 5906 1206.8
C 3 202 19035 7.83 6520 6068 1655.4
C 1 81 18748 7.66 6520 6068 1655.4
C 1 80 18253 7.36 6520 6068 1655.4
D 10 189 14082 6.03 5515 5007 1504.8
D 15 47 13904 5.91 5515 5007 1504.8
D 4 16 13733 5.8 5515 5007 1504.8

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