ASTROSAT CZTI

Data Quality Report

Orbit 26246

Creation date: 2024-06-27T19:26:34.437440
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_079T03_9000003790_26246cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26246cztM0_level2_quad_clean.evt
Size (bytes)534,205,44094,000,320
Size509.5 MB 89.6 MB
Events in quadrant A3,332,414597,757
Events in quadrant B3,261,840620,803
Events in quadrant C3,858,542595,549
Events in quadrant D5,266,542560,554

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143020
B0139920
C0157260
D0202820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6768981.447991%
B6768931.374113%
C67691962.895553%
D67693435.067218%

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 7388 6769 13 13 0.18% 0.19%
B 7388 6769 1 1 0.01% 0.01%
C 7389 6770 63 63 0.85% 0.93%
D 7389 6770 231 231 3.13% 3.41%

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 184334 1119.99 814 795 163.9
A 13 254 10285 57.91 814 795 163.9
A 3 1 7628 41.7 814 795 163.9
B 7 219 40296 250.81 814 793 157.5
B 12 111 19317 117.61 814 793 157.5
B 11 111 16875 102.11 814 793 157.5
C 3 233 702866 3873.61 775 779 181.2
C 14 238 123546 677.34 775 779 181.2
C 2 16 14209 74.1 775 779 181.2
D 1 52 2276062 12399.27 769 749 183.5
D 12 233 51858 278.52 769 749 183.5
D 2 234 28249 149.86 769 749 183.5

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