ASTROSAT CZTI

Data Quality Report

Orbit 46720

Creation date: 2024-06-27T23:26:49.283721
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/AS1A13_092T09_9000006258_46720cztM0_level2.fits modeM0/AS1A13_092T09_9000006258_46720cztM0_level2_quad_clean.evt
Size (bytes)209,050,56045,446,400
Size199.4 MB 43.3 MB
Events in quadrant A2,894,083294,821
Events in quadrant B1,467,328318,954
Events in quadrant C1,691,042296,618
Events in quadrant D1,478,578276,715

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103661
B060481
C067821
D061931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26441927.261725%
B2644742.798790%
C26441525.748865%
D2643592.232312%

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 3834 2645 99 99 2.58% 3.74%
B 3834 2645 12 12 0.31% 0.45%
C 3834 2645 122 122 3.18% 4.61%
D 3832 2642 30 30 0.78% 1.14%

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 1475238 22024.12 314 307 67.0
A 9 191 126346 1882.05 314 307 67.0
A 15 235 57339 851.62 314 307 67.0
B 4 171 78866 1217.92 319 310 64.5
B 3 112 54803 844.85 319 310 64.5
B 5 32 33312 511.66 319 310 64.5
C 12 2 418856 5643.02 310 311 74.2
C 5 250 23827 317.05 310 311 74.2
C 0 207 21408 284.44 310 311 74.2
D 13 249 83045 1036.48 311 301 79.8
D 1 52 59433 740.71 311 301 79.8
D 14 34 48186 599.83 311 301 79.8

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