ASTROSAT CZTI

Data Quality Report

Orbit 44185

Creation date: 2024-06-27T23:00:08.654897
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/AS1A13_074T04_9000005962_44185cztM0_level2.fits modeM0/AS1A13_074T04_9000005962_44185cztM0_level2_quad_clean.evt
Size (bytes)337,314,24063,570,240
Size321.7 MB 60.6 MB
Events in quadrant A4,160,569387,312
Events in quadrant B2,155,930463,497
Events in quadrant C2,067,451440,603
Events in quadrant D3,800,064359,771

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152481
B089451
C087522
D0139221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A387669617.956656%
B38761313.379773%
C3875751.935484%
D387558014.967742%

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 5047 3877 475 475 9.41% 12.25%
B 5047 3877 17 17 0.34% 0.44%
C 5046 3876 17 17 0.34% 0.44%
D 5046 3876 452 452 8.96% 11.66%

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 15 223 1766653 19905.48 421 412 88.7
A 10 83 745540 8397.57 421 412 88.7
A 7 3 18248 201.01 421 412 88.7
B 5 172 113577 1215.23 466 452 93.1
B 0 200 85461 913.2 466 452 93.1
B 5 255 40269 427.73 466 452 93.1
C 14 254 126748 1148.15 460 462 110.0
C 3 233 67354 608.16 460 462 110.0
C 15 208 48706 438.62 460 462 110.0
D 1 52 1018443 9499.75 426 413 107.2
D 1 47 358600 3342.42 426 413 107.2
D 2 249 296615 2764.01 426 413 107.2

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