ASTROSAT CZTI

Data Quality Report

Orbit 14237

Creation date: 2024-06-27T16:52:20.395618
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/AS1G08_069T01_9000002102_14237cztM0_level2.evt modeM0/AS1G08_069T01_9000002102_14237cztM0_level2_quad_clean.evt
Size (bytes)1,172,744,640192,121,920
Size1.1 GB 183.2 MB
Events in quadrant A7,688,2731,234,576
Events in quadrant B8,021,9751,211,242
Events in quadrant C7,706,1351,171,450
Events in quadrant D11,044,5751,123,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326734
B0338833
C0320403
D0430153

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15625550.352000%
B156251510.966400%
C15625350.224000%
D156254642.969600%

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 17936 15629 8 8 0.04% 0.05%
B 17936 15629 40 40 0.22% 0.26%
C 17936 15629 0 0 0.00% 0.00%
D 17936 15629 331 331 1.85% 2.12%

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 8 15 267184 703.39 1874 1832 377.2
A 12 189 111303 290.18 1874 1832 377.2
A 9 143 61369 157.82 1874 1832 377.2
B 0 229 312525 880.28 1859 1810 353.0
B 5 175 166367 466.2 1859 1810 353.0
B 0 189 79125 219.04 1859 1810 353.0
C 3 233 593450 1406.23 1823 1831 420.7
C 13 61 13083 26.75 1823 1831 420.7
C 14 234 9895 19.17 1823 1831 420.7
D 8 195 1282571 2967.11 1789 1747 431.7
D 1 52 1247157 2885.07 1789 1747 431.7
D 5 222 704334 1627.59 1789 1747 431.7

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