ASTROSAT CZTI

Data Quality Report

Orbit 11551

Creation date: 2024-06-27T16:14:44.640059
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/AS1G08_009T01_9000001696_11551cztM0_level2.evt modeM0/AS1G08_009T01_9000001696_11551cztM0_level2_quad_clean.evt
Size (bytes)267,137,28060,027,840
Size254.8 MB 57.2 MB
Events in quadrant A2,324,012399,793
Events in quadrant B1,911,612410,575
Events in quadrant C1,520,077404,960
Events in quadrant D2,126,377386,418

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090472
B076201
C064331
D083451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30472076.793567%
B30471595.218247%
C3047421.378405%
D30471203.938300%

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 4283 3049 50 50 1.17% 1.64%
B 4283 3049 32 32 0.75% 1.05%
C 4283 3049 0 0 0.00% 0.00%
D 4283 3049 52 52 1.21% 1.71%

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 615056 7506.02 396 387 81.9
A 1 162 67581 820.54 396 387 81.9
A 1 178 38979 471.27 396 387 81.9
B 4 239 275965 3512.84 398 389 78.4
B 11 51 29849 375.53 398 389 78.4
B 15 204 21856 273.65 398 389 78.4
C 13 61 2887 27.31 389 392 91.4
C 12 4 1771 15.09 389 392 91.4
C 13 250 1013 6.8 389 392 91.4
D 1 52 570277 6056.99 385 374 94.1
D 13 137 31762 333.59 385 374 94.1
D 2 120 22329 233.34 385 374 94.1

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