ASTROSAT CZTI

Data Quality Report

Orbit 20230423_A12_044T19_9000005580_level2

Creation date: 2023-04-24T12:34:17.844400
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_044T19_9000005580cztM0_level2.fits modeM0/AS1A12_044T19_9000005580cztM0_level2_quad_clean.evt
Size (bytes)267,356,160323,864,640
Size255.0 MB 308.9 MB
Events in quadrant A1,596,7862,027,626
Events in quadrant B1,533,2482,037,275
Events in quadrant C1,556,8961,926,267
Events in quadrant D1,345,7461,753,471

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06140
B06140
C06140
D06140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0639580
B0609390
C0615450
D0748550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30025620.206495%
B30025590.196503%
C300251340.446295%
D300257832.607827%

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 39552 30024 0 0 0.00% 0.00%
B 39552 30024 0 0 0.00% 0.00%
C 39552 30024 0 0 0.00% 0.00%
D 39552 30009 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 1330 8.76 416 389 107.4
A 9 19 1311 8.58 416 389 107.4
A 0 29 1262 8.13 416 389 107.4
B 2 9 1331 11.62 405 384 81.5
B 5 128 1139 9.26 405 384 81.5
B 3 80 1086 8.61 405 384 81.5
C 1 81 1254 8.18 411 384 106.4
C 1 80 1161 7.31 411 384 106.4
C 1 65 1109 6.82 411 384 106.4
D 4 160 965 5.89 384 349 104.5
D 6 231 955 5.8 384 349 104.5
D 7 3 946 5.71 384 349 104.5

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