ASTROSAT CZTI

Data Quality Report

Orbit 20190517_A06_003T02_9000002926_level2

Creation date: 2025-11-30T06:59:04.595723
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/AS1A06_003T02_9000002926cztM0_level2.fits modeM0/AS1A06_003T02_9000002926cztM0_level2_quad_clean.evt
Size (bytes)305,251,200250,801,920
Size291.1 MB 239.2 MB
Events in quadrant A1,889,1341,488,878
Events in quadrant B1,820,4361,482,639
Events in quadrant C1,848,5841,406,483
Events in quadrant D1,437,496969,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06660
B06660
C06660
D06660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0675940
B0698430
C0674340
D01102030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A326855411.655194%
B326856742.062108%
C326856431.967263%
D32685520215.915558%

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 46856 32683 0 0 0.00% 0.00%
B 46856 32682 0 0 0.00% 0.00%
C 46856 32683 0 0 0.00% 0.00%
D 46856 31864 0 0 0.00% 0.00%

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 0 29 1866 11.48 491 460 122.4
A 7 110 1496 8.46 491 460 122.4
A 15 236 1414 7.79 491 460 122.4
B 2 9 1454 10.63 479 457 93.8
B 3 17 1249 8.44 479 457 93.8
B 2 8 1216 8.09 479 457 93.8
C 1 81 1392 7.44 487 453 126.2
C 1 80 1387 7.4 487 453 126.2
C 12 241 1363 7.21 487 453 126.2
D 3 14 1037 6.01 411 374 110.4
D 6 231 1026 5.91 411 374 110.4
D 15 46 1024 5.89 411 374 110.4

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