ASTROSAT CZTI

Data Quality Report

Orbit 46874

Creation date: 2024-06-27T23:28:48.165244
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_053T01_9000006274_46874cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46874cztM0_level2_quad_clean.evt
Size (bytes)990,169,920186,681,600
Size944.3 MB 178.0 MB
Events in quadrant A11,108,5541,275,048
Events in quadrant B6,324,8421,314,025
Events in quadrant C6,002,3031,265,333
Events in quadrant D12,250,978934,199

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04048817
B0273763
C02719211
D04539629

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124832612.090844%
B124892381.905677%
C124852532.026432%
D12485254020.344413%

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 13365 12494 1 1 0.01% 0.01%
B 13365 12495 64 64 0.48% 0.51%
C 13366 12494 134 134 1.00% 1.07%
D 13366 12495 2170 2170 16.24% 17.37%

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 10 83 5813619 20837.7 1357 1325 278.9
A 9 191 18221 60.57 1357 1325 278.9
A 3 137 16071 52.87 1357 1325 278.9
B 3 112 436235 1649.04 1348 1306 263.7
B 5 32 269132 1015.47 1348 1306 263.7
B 0 200 111632 418.3 1348 1306 263.7
C 14 254 643893 2038.39 1339 1342 315.2
C 1 241 103760 324.91 1339 1342 315.2
C 3 233 34786 106.1 1339 1342 315.2
D 2 249 2943332 9670.93 1232 1198 304.2
D 12 233 2671462 8777.28 1232 1198 304.2
D 13 249 1174514 3856.74 1232 1198 304.2

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