ASTROSAT CZTI

Data Quality Report

Orbit 26970

Creation date: 2024-06-27T19:35:06.136427
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/AS1C05_019T03_9000003898_26970cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26970cztM0_level2_quad_clean.evt
Size (bytes)717,491,520118,353,600
Size684.3 MB 112.9 MB
Events in quadrant A11,137,731603,418
Events in quadrant B3,303,087865,701
Events in quadrant C3,080,966837,842
Events in quadrant D3,756,083811,526

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377050
B0141540
C0135660
D0159040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6664366354.966987%
B66641171.755702%
C6665340.510128%
D6665991.485371%

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 7279 6664 2853 2853 39.19% 42.81%
B 7279 6666 65 65 0.89% 0.98%
C 7280 6667 1 1 0.01% 0.01%
D 7280 6667 75 75 1.03% 1.12%

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 14 235 8803322 75746.05 581 570 116.2
A 6 16 52389 445.89 581 570 116.2
A 0 13 24116 202.61 581 570 116.2
B 0 189 208686 1412.06 775 756 147.3
B 0 230 25893 170.71 775 756 147.3
B 0 219 19896 129.98 775 756 147.3
C 14 238 122256 695.89 749 751 174.6
C 15 208 22307 123.46 749 751 174.6
C 2 16 13047 70.42 749 751 174.6
D 11 176 367936 2053.2 752 730 178.8
D 1 52 246643 1375.0 752 730 178.8
D 2 250 218805 1219.35 752 730 178.8

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