ASTROSAT CZTI

Data Quality Report

Orbit 20160724_G05_245T01_9000000554_level2

Creation date: 2025-11-04T10:52:23.253630
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/AS1G05_245T01_9000000554cztM0_level2.fits modeM0/AS1G05_245T01_9000000554cztM0_level2_quad_clean.evt
Size (bytes)141,963,840107,544,960
Size135.4 MB 102.6 MB
Events in quadrant A856,412579,690
Events in quadrant B835,414583,763
Events in quadrant C837,284547,555
Events in quadrant D724,300498,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312990
B0312450
C0309960
D0326200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15166860.567058%
B15166930.613214%
C15166450.296716%
D151661521.002242%

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 18588 15167 0 0 0.00% 0.00%
B 18588 15167 0 0 0.00% 0.00%
C 18588 15167 0 0 0.00% 0.00%
D 18588 15166 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 14 188 822 10.27 222 208 59.8
A 7 110 764 9.3 222 208 59.8
A 0 29 750 9.07 222 208 59.8
B 2 9 782 12.1 219 209 47.4
B 12 226 637 9.03 219 209 47.4
B 5 128 592 8.08 219 209 47.4
C 1 81 644 7.24 220 205 60.7
C 1 80 639 7.15 220 205 60.7
C 9 188 573 6.07 220 205 60.7
D 11 82 577 6.82 205 187 57.2
D 3 14 545 6.26 205 187 57.2
D 10 113 531 6.01 205 187 57.2

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