ASTROSAT CZTI

Data Quality Report

Orbit 20240419_A13_072T02_9000006194_level2

Creation date: 2024-04-23T12:06:30.261553
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_072T02_9000006194cztM0_level2.fits modeM0/AS1A13_072T02_9000006194cztM0_level2_quad_clean.evt
Size (bytes)1,063,238,4001,105,413,120
Size1014.0 MB 1.0 GB
Events in quadrant A6,246,4806,579,433
Events in quadrant B6,016,2226,612,999
Events in quadrant C6,387,6766,452,260
Events in quadrant D5,437,7985,728,289

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03821750
B03196020
C02504080
D02963780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023100
B023100
C023100
D023100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11858443593.675875%
B11858460085.066451%
C11858416071.355158%
D11858448884.121973%

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 130479 118579 0 0 0.00% 0.00%
B 130479 118495 0 0 0.00% 0.00%
C 130479 118582 0 0 0.00% 0.00%
D 130479 118501 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 15 236 5101 8.6 1627 1510 417.6
A 7 110 5100 8.6 1627 1510 417.6
A 0 29 4738 7.73 1627 1510 417.6
B 2 9 5626 12.9 1584 1498 320.0
B 3 17 4492 9.36 1584 1498 320.0
B 2 8 4456 9.24 1584 1498 320.0
C 3 202 4858 7.46 1688 1563 441.7
C 1 81 4773 7.27 1688 1563 441.7
C 3 203 4663 7.02 1688 1563 441.7
D 15 47 3943 5.87 1558 1412 430.9
D 10 189 3858 5.68 1558 1412 430.9
D 15 63 3849 5.66 1558 1412 430.9

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