ASTROSAT CZTI

Data Quality Report

Orbit 27412

Creation date: 2024-06-27T19:39:47.323817
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/AS1T03_249T01_9000003934_27412cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27412cztM0_level2_quad_clean.evt
Size (bytes)1,117,008,000202,124,160
Size1.0 GB 192.8 MB
Events in quadrant A6,970,5161,321,702
Events in quadrant B6,994,0611,335,283
Events in quadrant C7,135,6211,265,970
Events in quadrant D11,758,3381,207,425

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299070
B0300600
C0304280
D0448240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14357590.410949%
B14356940.654778%
C143572001.393049%
D1435710026.979174%

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 17152 14360 12 12 0.07% 0.08%
B 17151 14358 2 2 0.01% 0.01%
C 17152 14360 13 13 0.08% 0.09%
D 17152 14360 945 945 5.51% 6.58%

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 14 235 96892 270.48 1770 1733 351.8
A 13 254 23981 63.24 1770 1733 351.8
A 12 96 19596 50.77 1770 1733 351.8
B 12 111 41680 119.89 1759 1716 333.3
B 11 111 37145 106.29 1759 1716 333.3
B 14 111 33217 94.5 1759 1716 333.3
C 14 238 274668 690.92 1691 1701 395.1
C 2 16 258585 650.21 1691 1701 395.1
C 13 61 11735 25.4 1691 1701 395.1
D 1 52 5000437 12674.23 1663 1619 394.4
D 2 250 369856 933.64 1663 1619 394.4
D 2 234 56521 139.2 1663 1619 394.4

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