ASTROSAT CZTI

Data Quality Report

Orbit 08419

Creation date: 2024-06-27T15:32:30.111390
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/AS1A02_158T01_9000001184_08419cztM0_level2.evt modeM0/AS1A02_158T01_9000001184_08419cztM0_level2_quad_clean.evt
Size (bytes)184,633,92046,321,920
Size176.1 MB 44.2 MB
Events in quadrant A1,322,235299,014
Events in quadrant B1,413,094305,936
Events in quadrant C1,314,728302,076
Events in quadrant D1,340,645286,935

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059971
B061681
C059391
D061711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2923110.376326%
B2923240.821074%
C2923130.444749%
D2923120.410537%

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 3818 2924 1 1 0.03% 0.03%
B 3818 2924 0 0 0.00% 0.00%
C 3818 2924 0 0 0.00% 0.00%
D 3818 2924 3 3 0.08% 0.10%

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 14 111 5069 65.85 340 332 71.9
A 13 248 4012 51.16 340 332 71.9
A 5 16 3849 48.89 340 332 71.9
B 0 214 22607 325.86 347 338 68.3
B 4 81 14739 210.73 347 338 68.3
B 10 252 9071 127.79 347 338 68.3
C 13 61 2616 28.42 336 338 80.2
C 3 202 838 6.24 336 338 80.2
C 7 247 759 5.25 336 338 80.2
D 12 221 25293 304.19 329 319 82.1
D 1 52 19855 237.95 329 319 82.1
D 2 14 12834 152.43 329 319 82.1

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