ASTROSAT CZTI

Data Quality Report

Orbit 35039

Creation date: 2022-03-22T16:44:30.060186
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/AS1A10_123T17_9000005018_35039cztM0_level2.evt modeM0/AS1A10_123T17_9000005018_35039cztM0_level2_quad_clean.evt
Size (bytes)538,796,16072,904,320
Size513.8 MB 69.5 MB
Events in quadrant A3,017,671453,878
Events in quadrant B3,146,808460,120
Events in quadrant C3,227,662450,869
Events in quadrant D6,493,161397,422

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130033
B0133392
C0131382
D0237572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A637670.109787%
B6376340.533250%
C6376150.235257%
D63765989.378921%

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 9363 6378 0 0 0.00% 0.00%
B 9362 6376 18 18 0.19% 0.28%
C 9363 6378 9 9 0.10% 0.14%
D 9363 6378 629 629 6.72% 9.86%

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 79227 515.75 755 737 152.2
A 13 6 11044 67.72 755 737 152.2
A 15 169 9580 58.1 755 737 152.2
B 5 172 113025 772.46 749 729 145.4
B 5 200 27542 184.44 749 729 145.4
B 4 232 24143 161.06 749 729 145.4
C 15 214 265197 1547.21 735 741 170.9
C 0 10 50390 290.47 735 741 170.9
C 14 67 33235 190.11 735 741 170.9
D 14 52 1877388 10889.85 707 687 172.3
D 8 195 809231 4691.7 707 687 172.3
D 13 249 445194 2579.32 707 687 172.3

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