ASTROSAT CZTI

Data Quality Report

Orbit 48020

Creation date: 2024-08-14T20:10:57.165845
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_053T01_9000006388_48020cztM0_level2.fits modeM0/AS1A13_053T01_9000006388_48020cztM0_level2_quad_clean.evt
Size (bytes)243,656,64058,510,080
Size232.4 MB 55.8 MB
Events in quadrant A3,597,962386,991
Events in quadrant B1,640,282397,161
Events in quadrant C1,738,154379,734
Events in quadrant D1,759,641351,090

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134820
B074460
C078160
D079150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3628471.295480%
B362880.220507%
C3628310.854465%
D3628210.578831%

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 3628 3628 6 6 0.17% 0.17%
B 3628 3628 0 0 0.00% 0.00%
C 3628 3628 22 22 0.61% 0.61%
D 3628 3628 21 21 0.58% 0.58%

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 10 83 1957753 22804.8 402 392 85.8
A 13 248 79259 918.86 402 392 85.8
A 13 254 5961 64.88 402 392 85.8
B 0 198 17598 209.99 406 392 81.9
B 12 111 10487 123.21 406 392 81.9
B 11 111 9562 111.92 406 392 81.9
C 12 2 113554 1190.45 398 400 95.1
C 14 254 47483 495.34 398 400 95.1
C 3 233 12836 130.83 398 400 95.1
D 13 29 136671 1373.58 395 382 99.2
D 7 67 50418 504.28 395 382 99.2
D 2 234 18460 182.2 395 382 99.2

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