ASTROSAT CZTI

Data Quality Report

Orbit 35710

Creation date: 2022-05-09T15:54:36.363074
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_029T01_9000005116_35710cztM0_level2.evt modeM0/AS1A09_029T01_9000005116_35710cztM0_level2_quad_clean.evt
Size (bytes)388,045,44076,648,320
Size370.1 MB 73.1 MB
Events in quadrant A2,569,299508,363
Events in quadrant B2,901,111506,477
Events in quadrant C2,910,413480,874
Events in quadrant D3,023,275466,673

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107812
B0117511
C0116581
D0123391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511840.078156%
B51181032.012505%
C5118851.660805%
D5118781.524033%

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 7179 5119 0 0 0.00% 0.00%
B 7179 5119 65 65 0.91% 1.27%
C 7179 5119 77 77 1.07% 1.50%
D 7179 5119 90 90 1.25% 1.76%

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 126403 992.69 628 617 126.7
A 13 6 7111 51.25 628 617 126.7
A 7 48 6279 44.68 628 617 126.7
B 5 172 345397 2958.88 615 601 116.5
B 5 255 66587 566.26 615 601 116.5
B 15 85 26605 223.15 615 601 116.5
C 0 10 251943 1852.01 586 591 135.7
C 15 214 214893 1579.02 586 591 135.7
C 9 187 143515 1053.09 586 591 135.7
D 7 223 245289 1703.56 593 579 143.6
D 1 52 122782 850.72 593 579 143.6
D 2 153 101288 701.09 593 579 143.6

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