ASTROSAT CZTI

Data Quality Report

Orbit 36482

Creation date: 2022-06-28T01:49:47.413630
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/AS1A11_049T03_9000005208_36482cztM0_level2.evt modeM0/AS1A11_049T03_9000005208_36482cztM0_level2_quad_clean.evt
Size (bytes)467,625,60063,195,840
Size446.0 MB 60.3 MB
Events in quadrant A2,574,916405,030
Events in quadrant B3,015,339395,546
Events in quadrant C4,554,293373,046
Events in quadrant D3,655,568366,093

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111282
B0123552
C0169182
D0146312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5328130.243994%
B53281072.008258%
C53283827.169670%
D53283536.625375%

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 6850 5329 6 6 0.09% 0.11%
B 6850 5329 91 91 1.33% 1.71%
C 6850 5329 407 407 5.94% 7.64%
D 6850 5329 327 327 4.77% 6.14%

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 196265 1583.01 607 596 123.6
A 15 233 10475 79.92 607 596 123.6
A 13 6 9074 68.59 607 596 123.6
B 5 172 377002 3299.8 595 580 114.1
B 5 255 122342 1067.39 595 580 114.1
B 0 189 55279 479.5 595 580 114.1
C 4 254 1539497 11550.25 568 570 133.2
C 0 10 357041 2675.45 568 570 133.2
C 15 214 227272 1701.49 568 570 133.2
D 13 249 657180 4699.3 569 552 139.7
D 12 227 443897 3172.9 569 552 139.7
D 13 171 125496 894.19 569 552 139.7

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