ASTROSAT CZTI

Data Quality Report

Orbit 18594

Creation date: 2024-06-27T17:52:00.043152
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_072T02_9000002762_18594cztM0_level2.evt modeM0/AS1A05_072T02_9000002762_18594cztM0_level2_quad_clean.evt
Size (bytes)819,011,520119,911,680
Size781.1 MB 114.4 MB
Events in quadrant A4,898,732740,427
Events in quadrant B5,028,625764,088
Events in quadrant C6,826,324703,919
Events in quadrant D7,339,152694,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214491
B0217131
C0269681
D0286621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10507370.352146%
B10507540.513943%
C105076846.509946%
D105084994.748763%

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 10812 10508 2 2 0.02% 0.02%
B 10812 10507 3 3 0.03% 0.03%
C 10812 10507 450 450 4.16% 4.28%
D 10813 10509 459 459 4.24% 4.37%

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 14 111 23122 85.48 1263 1234 256.1
A 13 254 16695 60.38 1263 1234 256.1
A 0 226 11015 38.19 1263 1234 256.1
B 0 230 41325 163.05 1263 1230 245.9
B 12 111 29694 115.75 1263 1230 245.9
B 11 111 26106 101.16 1263 1230 245.9
C 4 254 1914079 6848.73 1188 1195 279.3
C 14 238 182756 650.05 1188 1195 279.3
C 9 54 92788 327.93 1188 1195 279.3
D 1 52 2350280 7982.09 1208 1170 294.3
D 7 238 297426 1006.65 1208 1170 294.3
D 5 222 81026 271.34 1208 1170 294.3

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