ASTROSAT CZTI

Data Quality Report

Orbit 51730

Creation date: 2025-04-21T18:15:01.730550
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_9000006464_51730cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51730cztM0_level2_quad_clean.evt
Size (bytes)782,726,40095,685,120
Size746.5 MB 91.3 MB
Events in quadrant A6,172,801669,782
Events in quadrant B5,008,559734,279
Events in quadrant C4,456,253667,565
Events in quadrant D12,765,925313,136

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234583
B0198543
C0183953
D0429853

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73576368.644828%
B73574546.170994%
C73573785.137964%
D7357403854.886503%

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 7992 7358 304 304 3.80% 4.13%
B 7992 7358 121 121 1.51% 1.64%
C 7992 7359 182 182 2.28% 2.47%
D 7992 7357 3535 3535 44.23% 48.05%

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 1048030 5113.71 829 807 204.8
A 4 175 1007870 4917.6 829 807 204.8
A 11 3 207567 1009.63 829 807 204.8
B 5 172 328772 1847.53 815 786 177.5
B 10 254 325576 1829.53 815 786 177.5
B 1 255 123096 688.97 815 786 177.5
C 15 231 219959 987.93 805 797 221.8
C 13 3 215689 968.69 805 797 221.8
C 12 250 206887 929.01 805 797 221.8
D 11 129 9930793 62907.49 563 542 157.9
D 8 176 260225 1645.07 563 542 157.9
D 2 249 152057 959.84 563 542 157.9

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