ASTROSAT CZTI

Data Quality Report

Orbit 42197

Creation date: 2024-06-27T22:38:23.589127
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/AS1A12_088T59_9000005774_42197cztM0_level2.fits modeM0/AS1A12_088T59_9000005774_42197cztM0_level2_quad_clean.evt
Size (bytes)229,011,84057,683,520
Size218.4 MB 55.0 MB
Events in quadrant A1,954,974396,101
Events in quadrant B1,684,352404,566
Events in quadrant C1,579,540381,158
Events in quadrant D3,000,345330,912

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078441
B072601
C067411
D0111901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3297501.516530%
B3297170.515620%
C329720.060661%
D32962979.010922%

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 5180 3298 28 28 0.54% 0.85%
B 5180 3298 10 10 0.19% 0.30%
C 5180 3298 1 1 0.02% 0.03%
D 5179 3297 289 289 5.58% 8.77%

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 330526 4202.82 377 369 78.6
A 15 223 139429 1770.2 377 369 78.6
A 13 248 21194 265.1 377 369 78.6
B 0 229 127557 1719.96 376 365 74.0
B 3 112 30315 405.0 376 365 74.0
B 0 156 18309 242.65 376 365 74.0
C 15 214 136580 1577.34 364 367 86.4
C 15 111 10268 114.65 364 367 86.4
C 0 207 3963 41.64 364 367 86.4
D 1 52 1204420 13524.87 353 343 89.0
D 12 233 179147 2008.43 353 343 89.0
D 1 47 95398 1067.71 353 343 89.0

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