ASTROSAT CZTI

Data Quality Report

Orbit 20220512_A09_029T10_9000005140_level2

Creation date: 2022-05-14T18:44:57.112457
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/AS1A09_029T10_9000005140cztM0_level2_bc.evt modeM0/AS1A09_029T10_9000005140cztM0_level2_quad_clean.evt
Size (bytes)1,203,914,880364,034,880
Size1.1 GB 347.2 MB
Events in quadrant A6,941,8792,368,719
Events in quadrant B9,131,7252,338,468
Events in quadrant C8,738,2902,249,479
Events in quadrant D9,775,2372,180,690

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0587620
B0687260
C0641130
D0699560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01330
C01330
D01330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05620
B05620
C05620
D05620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A274731770.644269%
B274727602.766453%
C274735241.907327%
D274738923.246824%

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 40771 27480 10 10 0.02% 0.04%
B 40771 27474 46 46 0.11% 0.17%
C 40771 27472 70 70 0.17% 0.25%
D 40771 27472 95 95 0.23% 0.35%

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 650614 1980.04 1477 1457 327.9
A 15 169 466659 1418.94 1477 1457 327.9
A 13 6 70579 210.83 1477 1457 327.9
B 5 172 1588200 5500.62 1455 1427 288.5
B 5 255 623239 2155.54 1455 1427 288.5
B 0 213 448835 1550.96 1455 1427 288.5
C 15 214 1080528 3409.05 1389 1380 316.6
C 0 10 934895 2949.0 1389 1380 316.6
C 0 207 933876 2945.78 1389 1380 316.6
D 13 249 1352906 4025.95 1421 1383 335.7
D 14 52 650578 1933.84 1421 1383 335.7
D 8 195 587223 1745.11 1421 1383 335.7

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