ASTROSAT CZTI

Data Quality Report

Orbit 18424

Creation date: 2024-06-27T17:49:38.852264
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/AS1A05_199T01_9000002732_18424cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18424cztM0_level2_quad_clean.evt
Size (bytes)458,651,520110,010,240
Size437.4 MB 104.9 MB
Events in quadrant A3,161,541723,495
Events in quadrant B3,219,284750,968
Events in quadrant C3,245,214726,553
Events in quadrant D3,836,897691,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135732
B0137053
C0137892
D0156572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6294681.080394%
B6293410.651518%
C6293921.461942%
D6293801.271254%

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 7549 6295 13 13 0.17% 0.21%
B 7548 6294 1 1 0.01% 0.02%
C 7548 6294 10 10 0.13% 0.16%
D 7548 6294 34 34 0.45% 0.54%

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 15 174 82535 519.03 791 777 157.5
A 3 254 31038 192.11 791 777 157.5
A 0 226 6945 39.16 791 777 157.5
B 0 189 19718 124.27 807 787 152.3
B 12 111 17194 107.71 807 787 152.3
B 15 33 16511 103.22 807 787 152.3
C 14 238 124018 678.23 783 789 181.7
C 9 54 47167 255.25 783 789 181.7
C 3 233 22396 118.92 783 789 181.7
D 12 110 377951 2000.21 778 756 188.6
D 8 230 263337 1392.43 778 756 188.6
D 1 52 131120 691.3 778 756 188.6

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