ASTROSAT CZTI

Data Quality Report

Orbit 19839

Creation date: 2024-06-27T18:07:44.661209
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_118T01_9000002962_19839cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19839cztM0_level2_quad_clean.evt
Size (bytes)2,928,283,200501,739,200
Size2.7 GB 478.5 MB
Events in quadrant A22,871,4173,116,449
Events in quadrant B20,581,4173,186,164
Events in quadrant C19,997,2983,051,509
Events in quadrant D22,418,0102,979,152

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08480
B08480
C08480
D08480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0430
C0430
D0430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09502410
B0874908
C0858838
D0946768

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4169715023.602178%
B416987051.690729%
C416986981.673941%
D4169810412.496523%

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 45498 41699 750 750 1.65% 1.80%
B 45498 41700 40 40 0.09% 0.10%
C 45498 41701 1 1 0.00% 0.00%
D 45498 41700 509 509 1.12% 1.22%

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 14 238 3209217 3171.17 5027 4918 1010.4
A 5 16 210028 202.99 5027 4918 1010.4
A 14 254 53015 47.6 5027 4918 1010.4
B 10 245 237506 241.34 5050 4916 963.8
B 7 220 194339 196.55 5050 4916 963.8
B 0 198 143415 143.71 5050 4916 963.8
C 14 238 752097 652.99 4881 4903 1144.3
C 9 221 174731 148.42 4881 4903 1144.3
C 3 233 38389 29.26 4881 4903 1144.3
D 1 52 1939234 1626.75 4931 4791 1189.1
D 7 238 1141645 956.03 4931 4791 1189.1
D 7 96 317301 262.8 4931 4791 1189.1

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