ASTROSAT CZTI

Data Quality Report

Orbit 20170909_G07_079T01_9000001528_level2

Creation date: 2026-01-17T15:11:04.303887
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/AS1G07_079T01_9000001528cztM0_level2.fits modeM0/AS1G07_079T01_9000001528cztM0_level2_quad_clean.evt
Size (bytes)135,720,000139,608,000
Size129.4 MB 133.1 MB
Events in quadrant A795,682815,792
Events in quadrant B765,542813,451
Events in quadrant C807,052806,826
Events in quadrant D687,742737,761

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346460
B0398450
C0311850
D0374010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152594272.798349%
B152599926.501081%
C152592411.579396%
D152593092.025034%

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 16934 15259 0 0 0.00% 0.00%
B 16933 15255 0 0 0.00% 0.00%
C 16934 15259 0 0 0.00% 0.00%
D 16933 15258 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 0 29 797 11.02 206 193 54.8
A 7 110 633 8.03 206 193 54.8
A 9 19 631 7.99 206 193 54.8
B 2 9 643 10.4 201 190 43.6
B 14 254 509 7.32 201 190 43.6
B 3 17 505 7.23 201 190 43.6
C 1 80 619 7.33 212 196 57.7
C 1 81 594 6.9 212 196 57.7
C 12 241 587 6.78 212 196 57.7
D 7 5 514 6.17 196 177 54.6
D 6 231 507 6.04 196 177 54.6
D 3 14 500 5.91 196 177 54.6

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