ASTROSAT CZTI

Data Quality Report

Orbit 47822

Creation date: 2024-08-01T10:38:47.352604
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_081T01_9000006354_47822cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47822cztM0_level2_quad_clean.evt
Size (bytes)486,930,240109,290,240
Size464.4 MB 104.2 MB
Events in quadrant A6,855,786730,988
Events in quadrant B3,191,280763,704
Events in quadrant C2,830,310728,492
Events in quadrant D4,631,919623,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247962
B0141632
C0135282
D0187782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66382123.193733%
B6638370.557397%
C663890.135583%
D66384857.306418%

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 7883 6639 84 84 1.07% 1.27%
B 7883 6639 7 7 0.09% 0.11%
C 7883 6639 5 5 0.06% 0.08%
D 7883 6639 439 439 5.57% 6.61%

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 3927526 26679.77 714 700 147.2
A 0 31 129359 874.14 714 700 147.2
A 13 248 33324 221.66 714 700 147.2
B 0 200 242522 1732.44 719 697 139.6
B 4 171 43960 309.94 719 697 139.6
B 12 111 17524 120.55 719 697 139.6
C 14 254 53981 326.89 702 705 163.0
C 12 250 26762 159.88 702 705 163.0
C 3 233 8416 47.31 702 705 163.0
D 12 2 1481780 8761.27 674 653 169.1
D 2 249 199235 1174.67 674 653 169.1
D 2 37 86053 505.16 674 653 169.1

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