ASTROSAT CZTI

Data Quality Report

Orbit 39401

Creation date: 2024-06-27T22:04:06.347366
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_018T01_9000005470_39401cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39401cztM0_level2_quad_clean.evt
Size (bytes)422,562,24089,982,720
Size403.0 MB 85.8 MB
Events in quadrant A3,015,536613,659
Events in quadrant B2,493,877638,849
Events in quadrant C3,060,390603,342
Events in quadrant D6,664,352501,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122773
B0110092
C0126192
D0234942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5248531.009909%
B5248150.285823%
C52481031.962652%
D524877714.805640%

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 7101 5249 35 35 0.49% 0.67%
B 7101 5249 8 8 0.11% 0.15%
C 7101 5249 69 69 0.97% 1.31%
D 7101 5249 723 723 10.18% 13.77%

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 419379 3496.21 588 577 119.8
A 13 248 273796 2280.87 588 577 119.8
A 2 79 30367 248.69 588 577 119.8
B 5 172 136545 1200.27 589 575 113.3
B 0 230 16465 140.27 589 575 113.3
B 12 111 14127 119.63 589 575 113.3
C 9 187 309758 2303.42 576 580 134.2
C 14 254 266896 1984.09 576 580 134.2
C 15 214 221857 1648.54 576 580 134.2
D 12 235 4051343 30193.2 550 536 134.2
D 13 249 353513 2630.96 550 536 134.2
D 2 249 98185 727.84 550 536 134.2

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