ASTROSAT CZTI

Data Quality Report

Orbit 21205

Creation date: 2024-06-27T18:24:55.034308
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/AS1A06_002T01_9000003134_21205cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21205cztM0_level2_quad_clean.evt
Size (bytes)773,058,24086,016,960
Size737.2 MB 82.0 MB
Events in quadrant A9,623,727424,736
Events in quadrant B4,976,936593,075
Events in quadrant C3,262,879604,270
Events in quadrant D5,138,535557,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327252
B0187702
C0134502
D0193643

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6080257442.335526%
B608075712.450658%
C60801101.809211%
D60794046.645830%

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 7460 6080 2511 2511 33.66% 41.30%
B 7460 6081 603 603 8.08% 9.92%
C 7460 6081 9 9 0.12% 0.15%
D 7459 6080 396 396 5.31% 6.51%

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 15 236 7275183 62509.49 582 571 116.4
A 11 47 89946 767.98 582 571 116.4
A 10 229 19035 158.65 582 571 116.4
B 0 182 1805377 12331.9 780 763 146.3
B 0 230 27710 184.14 780 763 146.3
B 0 229 25589 169.65 780 763 146.3
C 14 238 121581 681.69 765 772 177.2
C 3 233 105421 590.5 765 772 177.2
C 0 10 45854 254.38 765 772 177.2
D 7 238 1094116 5919.9 757 735 184.7
D 1 52 431855 2334.21 757 735 184.7
D 15 0 211853 1143.06 757 735 184.7

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