ASTROSAT CZTI

Data Quality Report

Orbit 18014

Creation date: 2024-06-27T17:43:52.359372
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_159T01_9000002678_18014cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18014cztM0_level2_quad_clean.evt
Size (bytes)991,080,000162,936,000
Size945.2 MB 155.4 MB
Events in quadrant A6,883,5721,033,681
Events in quadrant B6,593,4251,039,678
Events in quadrant C7,195,411998,927
Events in quadrant D8,458,965958,838

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286193
B0276964
C0294773
D0339453

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130782001.529286%
B130771701.299992%
C130771871.429992%
D130784323.303257%

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 14953 13080 81 81 0.54% 0.62%
B 14952 13079 34 34 0.23% 0.26%
C 14952 13079 5 5 0.03% 0.04%
D 14953 13081 252 252 1.69% 1.93%

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 446342 1363.89 1601 1569 326.1
A 6 16 234536 714.39 1601 1569 326.1
A 15 192 45156 133.66 1601 1569 326.1
B 7 220 233969 750.38 1606 1566 309.7
B 12 111 36612 113.16 1606 1566 309.7
B 11 111 31195 95.67 1606 1566 309.7
C 0 207 547770 1509.07 1542 1558 362.0
C 3 233 377414 1038.41 1542 1558 362.0
C 14 238 236374 648.75 1542 1558 362.0
D 5 222 1808239 4778.36 1546 1509 378.1
D 7 238 274296 721.46 1546 1509 378.1
D 1 255 209067 548.94 1546 1509 378.1

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