ASTROSAT CZTI

Data Quality Report

Orbit 20231007_A12_018T01_9000005874_level2

Creation date: 2023-10-20T10:57:24.326735
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/AS1A12_018T01_9000005874cztM0_level2.fits modeM0/AS1A12_018T01_9000005874cztM0_level2_quad_clean.evt
Size (bytes)3,609,639,3605,758,755,840
Size3.4 GB 5.4 GB
Events in quadrant A20,093,05635,461,401
Events in quadrant B20,994,32239,794,217
Events in quadrant C21,516,12037,898,989
Events in quadrant D17,556,20032,162,333

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013219340
B09424760
C08719090
D013478020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016030
B016050
C016060
D016060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087040
B087020
C087040
D087040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4251635049511.876621%
B42516637590.884125%
C4251605290.124424%
D425159366508.620304%

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 651344 418180 0 0 0.00% 0.00%
B 651344 425081 0 0 0.00% 0.00%
C 651344 425160 0 0 0.00% 0.00%
D 651344 424037 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 17290 9.5 5250 4930 1300.7
A 9 19 16708 9.05 5250 4930 1300.7
A 0 29 16658 9.02 5250 4930 1300.7
B 2 9 18210 12.25 5562 5313 1053.1
B 2 8 14784 8.99 5562 5313 1053.1
B 3 80 14743 8.95 5562 5313 1053.1
C 1 81 18133 8.94 5694 5345 1429.9
C 3 202 17336 8.39 5694 5345 1429.9
C 1 80 17321 8.38 5694 5345 1429.9
D 10 189 13400 6.57 5037 4570 1343.5
D 7 3 12941 6.23 5037 4570 1343.5
D 4 160 12930 6.22 5037 4570 1343.5

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