ASTROSAT CZTI

Data Quality Report

Orbit 21069

Creation date: 2024-06-27T18:23:22.154771
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_155T04_9000003114_21069cztM0_level2.evt modeM0/AS1A05_155T04_9000003114_21069cztM0_level2_quad_clean.evt
Size (bytes)1,135,293,120198,169,920
Size1.1 GB 189.0 MB
Events in quadrant A7,392,2451,254,399
Events in quadrant B8,640,5131,255,216
Events in quadrant C7,452,4451,207,020
Events in quadrant D9,805,2711,171,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330533
B0360733
C0329613
D0397913

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161591410.872579%
B161602131.318069%
C161601701.051980%
D161604372.704208%

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 18304 16162 0 0 0.00% 0.00%
B 18305 16163 40 40 0.22% 0.25%
C 18305 16163 0 0 0.00% 0.00%
D 18305 16163 274 274 1.50% 1.70%

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 13 254 24734 59.4 1913 1870 384.9
A 0 226 16737 38.62 1913 1870 384.9
A 3 137 15558 35.56 1913 1870 384.9
B 0 182 583531 1598.63 1904 1855 363.9
B 0 219 168587 458.23 1904 1855 363.9
B 3 64 110684 299.1 1904 1855 363.9
C 14 238 285092 656.28 1838 1847 431.6
C 13 61 12984 25.8 1838 1847 431.6
C 3 233 5452 8.35 1838 1847 431.6
D 1 52 842617 1884.87 1852 1797 446.1
D 7 38 404264 902.21 1852 1797 446.1
D 9 1 358706 800.08 1852 1797 446.1

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