ASTROSAT CZTI

Data Quality Report

Orbit 34669

Creation date: 2022-02-25T21:57:12.980497
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_065T06_9000004958_34669cztM0_level2.evt modeM0/AS1A11_065T06_9000004958_34669cztM0_level2_quad_clean.evt
Size (bytes)513,696,96063,498,240
Size489.9 MB 60.6 MB
Events in quadrant A3,113,807414,096
Events in quadrant B4,219,423384,239
Events in quadrant C2,868,069406,530
Events in quadrant D5,024,920374,443

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123013
B0155562
C0112922
D0185822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4889501.022704%
B488958411.945183%
C4889420.859071%
D48894459.102066%

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 7012 4890 30 30 0.43% 0.61%
B 7012 4889 447 447 6.37% 9.14%
C 7012 4890 32 32 0.46% 0.65%
D 7012 4890 367 367 5.23% 7.51%

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 15 169 467649 3644.03 642 632 128.2
A 15 174 105866 821.12 642 632 128.2
A 10 83 46439 357.42 642 632 128.2
B 10 245 684441 6028.03 599 585 113.4
B 5 172 552474 4864.77 599 585 113.4
B 5 255 551220 4853.72 599 585 113.4
C 15 214 209795 1491.72 610 617 140.2
C 0 10 130679 927.52 610 617 140.2
C 14 67 113661 806.16 610 617 140.2
D 8 195 1358603 9538.53 592 576 142.4
D 2 249 906624 6363.91 592 576 142.4
D 12 233 181760 1272.6 592 576 142.4

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