ASTROSAT CZTI

Data Quality Report

Orbit 26189

Creation date: 2024-06-27T19:25:53.550830
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_012T03_9000003782_26189cztM0_level2.evt modeM0/AS1A09_012T03_9000003782_26189cztM0_level2_quad_clean.evt
Size (bytes)183,718,08053,631,360
Size175.2 MB 51.1 MB
Events in quadrant A1,236,508353,988
Events in quadrant B1,348,183358,537
Events in quadrant C1,268,999357,877
Events in quadrant D1,516,136351,910

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056500
B058010
C056750
D063740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A282250.177179%
B282340.141693%
C282360.212540%
D2823301.062699%

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 2822 2822 0 0 0.00% 0.00%
B 2823 2823 0 0 0.00% 0.00%
C 2823 2823 0 0 0.00% 0.00%
D 2823 2823 23 23 0.81% 0.81%

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 4666 67.23 319 313 64.8
A 3 137 2985 41.26 319 313 64.8
A 0 226 2798 38.38 319 313 64.8
B 0 230 75250 1246.28 316 308 60.1
B 0 245 20675 338.7 316 308 60.1
B 0 190 16697 272.55 316 308 60.1
C 14 238 49976 689.96 305 307 72.0
C 2 16 15793 215.12 305 307 72.0
C 3 233 14152 192.32 305 307 72.0
D 1 52 302789 4081.68 308 301 74.1
D 12 233 30401 406.16 308 301 74.1
D 2 234 13008 171.46 308 301 74.1

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