ASTROSAT CZTI

Data Quality Report

Orbit 42580

Creation date: 2024-06-27T22:41:49.439023
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_061T07_9000005818_42580cztM0_level2.fits modeM0/AS1A12_061T07_9000005818_42580cztM0_level2_quad_clean.evt
Size (bytes)339,238,08093,038,400
Size323.5 MB 88.7 MB
Events in quadrant A3,105,813619,655
Events in quadrant B2,700,403628,333
Events in quadrant C2,674,659611,224
Events in quadrant D3,624,634551,804

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125052
B0121274
C0116722
D0147232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5803120.206790%
B5802490.844536%
C580220.034471%
D58021642.826612%

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 7235 5804 3 3 0.04% 0.05%
B 7234 5803 29 29 0.40% 0.50%
C 7234 5803 0 0 0.00% 0.00%
D 7234 5803 125 125 1.73% 2.15%

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 630657 4872.42 629 615 129.3
A 13 6 16359 121.76 629 615 129.3
A 13 254 8345 59.78 629 615 129.3
B 15 35 104794 871.44 623 605 119.6
B 0 245 51217 423.32 623 605 119.6
B 5 255 20424 165.76 623 605 119.6
C 15 214 240767 1667.78 612 616 144.0
C 12 249 15775 105.28 612 616 144.0
C 3 233 14317 95.15 612 616 144.0
D 1 52 421835 2808.23 609 590 150.0
D 9 19 346743 2307.63 609 590 150.0
D 13 249 159238 1057.63 609 590 150.0

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