ASTROSAT CZTI

Data Quality Report

Orbit 49756

Creation date: 2024-12-14T13:57:51.449959
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_037T01_9000006440_49756cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49756cztM0_level2_quad_clean.evt
Size (bytes)1,383,289,92064,036,800
Size1.3 GB 61.1 MB
Events in quadrant A18,026,534337,195
Events in quadrant B4,999,545738,154
Events in quadrant C9,925,03712,099
Events in quadrant D17,694,043337,427

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0585180
B0196980
C0345700
D0575330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7241687594.945450%
B72426228.588788%
C72427242100.000000%
D7242627986.702568%

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 7240 7240 6767 6767 93.47% 93.47%
B 7242 7242 228 228 3.15% 3.15%
C 7241 7241 131 131 1.81% 1.81%
D 7241 7241 6290 6290 86.87% 86.87%

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 5946844 52482.27 407 393 113.3
A 0 98 2757843 24336.74 407 393 113.3
A 12 50 1258920 11107.52 407 393 113.3
B 4 206 413458 2390.66 799 773 172.6
B 5 185 395201 2284.9 799 773 172.6
B 4 21 248319 1434.02 799 773 172.6
C 15 180 3573364 139456.7 36 33 25.6
C 15 190 1550969 60528.51 36 33 25.6
C 15 181 993594 38775.79 36 33 25.6
D 15 168 4052800 27248.2 446 425 148.7
D 8 129 1985617 13348.44 446 425 148.7
D 15 185 1915514 12877.07 446 425 148.7

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