ASTROSAT CZTI

Data Quality Report

Orbit 20221223_A12_083T07_9000005440_level2

Creation date: 2022-12-26T05:51:09.432469
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/AS1A12_083T07_9000005440cztM0_level2.fits modeM0/AS1A12_083T07_9000005440cztM0_level2_quad_clean.evt
Size (bytes)106,482,240111,600,000
Size101.5 MB 106.4 MB
Events in quadrant A666,608710,277
Events in quadrant B640,734703,308
Events in quadrant C606,574637,589
Events in quadrant D444,616464,588

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304070
B0259850
C0395810
D0754330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12484960.768984%
B12484730.584748%
C12484145011.614867%
D12484541743.391541%

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 16663 12484 0 0 0.00% 0.00%
B 16663 12481 0 0 0.00% 0.00%
C 16663 12475 0 0 0.00% 0.00%
D 16663 12378 0 0 0.00% 0.00%

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 9 19 569 8.77 174 163 46.3
A 7 110 551 8.38 174 163 46.3
A 0 29 520 7.71 174 163 46.3
B 2 9 541 10.48 169 162 36.2
B 3 80 509 9.6 169 162 36.2
B 2 8 474 8.63 169 162 36.2
C 1 81 507 8.22 160 150 43.4
C 1 80 492 7.88 160 150 43.4
C 1 65 449 6.89 160 150 43.4
D 4 160 371 7.11 127 116 35.9
D 7 3 368 7.02 127 116 35.9
D 3 14 339 6.22 127 116 35.9

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