ASTROSAT CZTI

Data Quality Report

Orbit 51423

Creation date: 2025-04-01T02:08:21.836772
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_090T01_9000006458_51423cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51423cztM0_level2_quad_clean.evt
Size (bytes)589,668,48093,441,600
Size562.4 MB 89.1 MB
Events in quadrant A5,162,300633,520
Events in quadrant B4,014,290687,033
Events in quadrant C8,395,270482,997
Events in quadrant D3,757,000576,534

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196532
B0162143
C0293032
D0157422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64352904.506605%
B64343044.724899%
C6434169426.328878%
D64341852.875350%

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 7570 6436 125 125 1.65% 1.94%
B 7569 6435 147 147 1.94% 2.28%
C 7569 6435 1486 1486 19.63% 23.09%
D 7569 6435 106 106 1.40% 1.65%

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 12 3 1230594 6953.47 723 705 176.9
A 15 174 254978 1437.59 723 705 176.9
A 4 175 184886 1041.31 723 705 176.9
B 8 128 307930 2027.19 719 695 151.6
B 5 185 183850 1208.49 719 695 151.6
B 0 172 137894 905.26 719 695 151.6
C 4 12 3644256 20921.19 633 629 174.2
C 10 171 624331 3581.21 633 629 174.2
C 15 179 568091 3258.29 633 629 174.2
D 7 80 226004 1163.64 697 671 193.6
D 11 176 170317 876.07 697 671 193.6
D 6 42 112914 579.63 697 671 193.6

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