ASTROSAT CZTI

Data Quality Report

Orbit 17861

Creation date: 2024-06-27T17:41:46.374044
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_085T01_9000002658_17861cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17861cztM0_level2_quad_clean.evt
Size (bytes)448,827,84094,371,840
Size428.0 MB 90.0 MB
Events in quadrant A3,060,876627,505
Events in quadrant B3,158,083643,835
Events in quadrant C3,145,412602,904
Events in quadrant D3,810,363554,219

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130492
B0131962
C0130732
D0155352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6147330.536847%
B6147631.024890%
C6147641.041158%
D61473054.961770%

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 7507 6148 1 1 0.01% 0.02%
B 7507 6148 1 1 0.01% 0.02%
C 7507 6148 1 1 0.01% 0.02%
D 7507 6148 255 255 3.40% 4.15%

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 0 226 7043 39.31 794 780 159.3
A 3 137 5861 31.89 794 780 159.3
A 12 194 5620 30.38 794 780 159.3
B 12 111 17484 110.49 803 785 151.1
B 11 111 14745 92.37 803 785 151.1
B 14 111 12986 80.73 803 785 151.1
C 14 238 121121 679.34 759 766 177.2
C 5 218 23824 130.15 759 766 177.2
C 3 233 15486 83.09 759 766 177.2
D 7 238 882585 4974.46 736 715 177.3
D 1 52 72039 402.32 736 715 177.3
D 2 14 67773 378.26 736 715 177.3

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