ASTROSAT CZTI

Data Quality Report

Orbit 43419

Creation date: 2024-06-27T22:51:46.343013
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_9000005874_43419cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43419cztM0_level2_quad_clean.evt
Size (bytes)312,076,80084,588,480
Size297.6 MB 80.7 MB
Events in quadrant A3,051,098559,230
Events in quadrant B2,457,077581,097
Events in quadrant C2,432,219552,756
Events in quadrant D3,202,324500,779

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123142
B0111502
C0106652
D0134552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5249821.562202%
B5249450.857306%
C524930.057154%
D52491362.590970%

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 7132 5250 60 60 0.84% 1.14%
B 7132 5250 34 34 0.48% 0.65%
C 7132 5250 1 1 0.01% 0.02%
D 7132 5250 127 127 1.78% 2.42%

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 586098 5165.09 552 541 113.4
A 15 237 292517 2575.47 552 541 113.4
A 13 6 20025 171.86 552 541 113.4
B 0 245 109308 1032.35 551 536 105.4
B 0 186 83699 789.3 551 536 105.4
B 5 255 51198 480.83 551 536 105.4
C 15 214 219333 1739.39 537 539 125.8
C 3 233 65258 514.51 537 539 125.8
C 14 254 39031 306.01 537 539 125.8
D 1 52 534206 4078.5 532 514 130.9
D 2 16 251926 1921.3 532 514 130.9
D 2 249 187205 1426.7 532 514 130.9

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