ASTROSAT CZTI

Data Quality Report

Orbit 26892

Creation date: 2024-06-27T19:34:15.014855
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/AS1A09_038T21_9000003882_26892cztM0_level2.evt modeM0/AS1A09_038T21_9000003882_26892cztM0_level2_quad_clean.evt
Size (bytes)230,621,76060,906,240
Size219.9 MB 58.1 MB
Events in quadrant A2,060,112405,036
Events in quadrant B1,524,592425,351
Events in quadrant C1,409,260407,882
Events in quadrant D1,783,861391,387

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081890
B065290
C061220
D073780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30131123.717225%
B3014311.028534%
C301480.265428%
D3014551.824818%

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 3013 3013 98 98 3.25% 3.25%
B 3014 3014 21 21 0.70% 0.70%
C 3014 3014 0 0 0.00% 0.00%
D 3014 3014 62 62 2.06% 2.06%

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 13 397765 5612.32 347 341 70.8
A 6 16 325701 4594.65 347 341 70.8
A 13 254 4862 63.84 347 341 70.8
B 10 246 69070 1029.63 357 349 66.7
B 3 64 39943 593.23 357 349 66.7
B 15 36 8813 126.81 357 349 66.7
C 14 238 56801 687.12 347 349 82.2
C 13 61 2351 24.37 347 349 82.2
C 15 78 853 6.13 347 349 82.2
D 1 52 335305 4164.04 336 328 80.4
D 11 176 95373 1181.49 336 328 80.4
D 2 250 69556 860.56 336 328 80.4

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