ASTROSAT CZTI

Data Quality Report

Orbit 34409

Creation date: 2022-02-08T01:27:19.083479
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/AS1A05_108T02_9000004914_34409cztM0_level2.evt modeM0/AS1A05_108T02_9000004914_34409cztM0_level2_quad_clean.evt
Size (bytes)170,850,24033,350,400
Size162.9 MB 31.8 MB
Events in quadrant A883,175227,994
Events in quadrant B928,706232,960
Events in quadrant C1,002,353229,524
Events in quadrant D2,242,214194,232

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035732
B037121
C039411
D078621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170630.175850%
B1706170.996483%
C1706231.348183%
D170636821.570926%

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 3858 1707 1 1 0.03% 0.06%
B 3858 1707 9 9 0.23% 0.53%
C 3858 1707 14 14 0.36% 0.82%
D 3858 1707 345 345 8.94% 20.21%

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 10 83 16889 356.74 220 215 46.7
A 9 143 8556 178.46 220 215 46.7
A 13 6 4243 86.18 220 215 46.7
B 5 172 58467 1334.69 219 214 43.6
B 12 111 5073 111.33 219 214 43.6
B 11 111 4617 100.88 219 214 43.6
C 15 214 73671 1432.4 215 216 51.3
C 0 10 67065 1303.58 215 216 51.3
C 14 67 10253 195.73 215 216 51.3
D 7 80 521096 9694.07 196 192 53.7
D 10 230 413800 7697.28 196 192 53.7
D 1 52 191373 3557.9 196 192 53.7

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