ASTROSAT CZTI

Data Quality Report

Orbit 54844

Creation date: 2025-11-17T10:19:03.387333
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/AS1A14_039T06_9000006526_54844cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54844cztM0_level2_quad_clean.evt
Size (bytes)682,067,520176,958,720
Size650.5 MB 168.8 MB
Events in quadrant A5,893,1701,148,456
Events in quadrant B5,999,0901,230,267
Events in quadrant C6,143,0221,088,720
Events in quadrant D6,249,1091,032,848

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270760
B0273800
C0276640
D0278580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124111681.353638%
B124111701.369753%
C124111441.160261%
D124121030.829842%

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 12411 12411 95 95 0.77% 0.77%
B 12411 12411 84 84 0.68% 0.68%
C 12411 12411 104 104 0.84% 0.84%
D 12412 12412 85 85 0.68% 0.68%

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 13 248 350383 1081.75 1306 1279 322.7
A 8 206 225070 693.45 1306 1279 322.7
A 4 3 53845 162.88 1306 1279 322.7
B 5 185 520137 1858.6 1291 1244 279.2
B 10 247 151024 536.49 1291 1244 279.2
B 2 249 110012 389.59 1291 1244 279.2
C 12 252 344878 992.29 1269 1260 346.3
C 4 5 226555 650.6 1269 1260 346.3
C 15 209 177268 508.27 1269 1260 346.3
D 11 129 181586 504.58 1266 1214 357.5
D 2 31 153189 425.14 1266 1214 357.5
D 8 240 134486 372.82 1266 1214 357.5

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