ASTROSAT CZTI

Data Quality Report

Orbit 47653

Creation date: 2024-07-21T00:53:31.640898
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/AS1A13_071T01_9000006340_47653cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47653cztM0_level2_quad_clean.evt
Size (bytes)524,082,240116,824,320
Size499.8 MB 111.4 MB
Events in quadrant A7,684,756757,215
Events in quadrant B4,110,809788,204
Events in quadrant C3,279,585769,021
Events in quadrant D3,754,972711,149

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280060
B0172870
C0153750
D0166130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73453995.432267%
B73462653.607405%
C7346250.340321%
D7346891.211544%

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 7345 7345 42 42 0.57% 0.57%
B 7346 7346 59 59 0.80% 0.80%
C 7346 7346 9 9 0.12% 0.12%
D 7346 7346 13 13 0.18% 0.18%

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 3965052 22923.99 828 810 172.9
A 9 191 494550 2855.15 828 810 172.9
A 13 248 20884 116.08 828 810 172.9
B 5 172 483813 2930.28 826 800 164.8
B 0 200 222060 1342.31 826 800 164.8
B 5 255 61283 366.93 826 800 164.8
C 14 254 103764 536.58 812 813 191.9
C 3 233 9490 45.22 812 813 191.9
C 1 3 5640 25.16 812 813 191.9
D 14 49 256156 1247.24 817 788 204.7
D 2 249 133742 649.36 817 788 204.7
D 8 176 55160 265.56 817 788 204.7

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