ASTROSAT CZTI

Data Quality Report

Orbit 09468

Creation date: 2024-06-27T15:46:32.089712
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/AS1A03_051T01_9000001346_09468cztM0_level2.evt modeM0/AS1A03_051T01_9000001346_09468cztM0_level2_quad_clean.evt
Size (bytes)792,411,840133,660,800
Size755.7 MB 127.5 MB
Events in quadrant A6,705,793849,569
Events in quadrant B5,160,810845,770
Events in quadrant C4,847,847823,260
Events in quadrant D6,562,310790,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268256
B0224713
C0222254
D0268912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106562352.205330%
B106571071.004035%
C10656700.656907%
D106573213.012105%

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 12857 10659 38 38 0.30% 0.36%
B 12857 10659 3 3 0.02% 0.03%
C 12857 10659 16 16 0.12% 0.15%
D 12857 10659 265 265 2.06% 2.49%

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 8 5 1628390 6331.46 1271 1246 257.0
A 14 111 87450 335.43 1271 1246 257.0
A 1 162 45946 173.93 1271 1246 257.0
B 0 214 50282 202.15 1273 1243 242.6
B 0 219 49376 198.41 1273 1243 242.6
B 12 18 32853 130.3 1273 1243 242.6
C 14 234 107189 381.12 1213 1220 278.0
C 13 61 9348 29.23 1213 1220 278.0
C 12 4 7202 21.51 1213 1220 278.0
D 1 52 1215768 3909.46 1201 1169 310.7
D 8 195 607157 1950.51 1201 1169 310.7
D 7 71 78789 249.84 1201 1169 310.7

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