ASTROSAT CZTI

Data Quality Report

Orbit 18098

Creation date: 2024-06-27T17:45:25.132666
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_080T01_9000002686_18098cztM0_level2.evt modeM0/AS1T03_080T01_9000002686_18098cztM0_level2_quad_clean.evt
Size (bytes)348,534,72080,343,360
Size332.4 MB 76.6 MB
Events in quadrant A2,050,084545,741
Events in quadrant B2,073,905549,414
Events in quadrant C2,005,790541,678
Events in quadrant D4,121,755482,763

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094551
B094331
C092161
D0153881

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4456651.458707%
B44571042.333408%
C44571102.468028%
D445781618.308279%

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 4646 4458 17 17 0.37% 0.38%
B 4647 4459 3 3 0.06% 0.07%
C 4647 4459 0 0 0.00% 0.00%
D 4647 4459 630 630 13.56% 14.13%

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 15 174 72621 699.68 503 491 103.1
A 4 2 35576 340.33 503 491 103.1
A 3 15 4686 40.69 503 491 103.1
B 7 220 32452 331.52 505 491 96.4
B 4 216 16551 166.58 505 491 96.4
B 0 197 14379 144.05 505 491 96.4
C 14 238 75705 647.43 491 492 116.2
C 2 1 6601 52.59 491 492 116.2
C 9 160 4394 33.59 491 492 116.2
D 7 238 1543709 13573.35 457 443 113.7
D 11 176 741538 6518.08 457 443 113.7
D 14 34 32429 281.32 457 443 113.7

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