ASTROSAT CZTI

Data Quality Report

Orbit 45856

Creation date: 2024-06-27T23:16:58.415942
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/AS1T05_187T01_9000006132_45856cztM0_level2.fits modeM0/AS1T05_187T01_9000006132_45856cztM0_level2_quad_clean.evt
Size (bytes)769,659,840125,873,280
Size734.0 MB 120.0 MB
Events in quadrant A7,124,748861,286
Events in quadrant B10,711,358735,618
Events in quadrant C3,705,714874,966
Events in quadrant D6,318,987772,804

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260430
B0375560
C0170271
D0242960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81442653.253929%
B8145204125.058318%
C8144190.233301%
D81444115.046660%

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 8144 8144 0 0 0.00% 0.00%
B 8145 8145 1200 1200 14.73% 14.73%
C 8144 8144 7 7 0.09% 0.09%
D 8144 8144 357 357 4.38% 4.38%

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 10 83 3289055 16557.45 942 918 198.6
A 0 247 163417 818.26 942 918 198.6
A 0 226 15598 73.92 942 918 198.6
B 3 112 6470636 36912.41 872 845 175.3
B 0 171 277477 1578.28 872 845 175.3
B 5 172 113617 643.4 872 845 175.3
C 14 254 32523 144.57 925 928 218.5
C 3 233 31263 138.8 925 928 218.5
C 2 14 24043 105.77 925 928 218.5
D 13 249 771447 3294.94 917 887 233.9
D 12 2 551692 2355.26 917 887 233.9
D 1 52 478702 2043.15 917 887 233.9

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