ASTROSAT CZTI

Data Quality Report

Orbit 12438

Creation date: 2024-06-27T16:27:21.795654
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/AS1A04_141T01_9000001848_12438cztM0_level2.evt modeM0/AS1A04_141T01_9000001848_12438cztM0_level2_quad_clean.evt
Size (bytes)318,525,12052,989,120
Size303.8 MB 50.5 MB
Events in quadrant A2,337,185333,990
Events in quadrant B2,079,445335,086
Events in quadrant C1,743,174340,403
Events in quadrant D3,217,210315,646

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095450
B088060
C081070
D0123150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3959290.732508%
B3959982.475373%
C395950.126295%
D39591874.723415%

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 3960 3960 17 17 0.43% 0.43%
B 3960 3960 78 78 1.97% 1.97%
C 3960 3960 4 4 0.10% 0.10%
D 3960 3960 337 337 8.51% 8.51%

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 13 251 309888 3385.73 440 431 91.4
A 1 162 71397 776.43 440 431 91.4
A 12 189 50336 546.0 440 431 91.4
B 4 239 274772 3199.16 438 426 85.8
B 3 209 35773 412.18 438 426 85.8
B 3 64 31972 367.85 438 426 85.8
C 15 208 66370 657.08 425 425 100.4
C 8 128 7167 67.18 425 425 100.4
C 14 234 4330 38.91 425 425 100.4
D 1 52 1519524 14701.46 421 408 103.3
D 13 104 30398 290.23 421 408 103.3
D 13 249 25927 246.96 421 408 103.3

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