ASTROSAT CZTI

Data Quality Report

Orbit 39560

Creation date: 2024-06-27T22:06:08.490350
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/AS1A12_018T01_9000005488_39560cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39560cztM0_level2_quad_clean.evt
Size (bytes)574,960,32087,353,280
Size548.3 MB 83.3 MB
Events in quadrant A9,111,553464,684
Events in quadrant B2,433,144658,949
Events in quadrant C3,995,198606,430
Events in quadrant D5,323,287534,967

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309093
B0109632
C0153962
D0194812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5421198236.561520%
B542170.129127%
C54212304.242760%
D542166612.285556%

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 7275 5422 1861 1861 25.58% 34.32%
B 7275 5422 1 1 0.01% 0.02%
C 7275 5421 217 217 2.98% 4.00%
D 7275 5422 686 686 9.43% 12.65%

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 15 222 6414501 57979.51 544 533 110.6
A 10 83 431600 3896.66 544 533 110.6
A 13 248 120925 1088.29 544 533 110.6
B 0 230 25050 213.39 604 588 114.6
B 5 255 14365 120.18 604 588 114.6
B 12 111 14204 118.78 604 588 114.6
C 15 208 976737 7139.19 590 594 136.7
C 9 187 421187 3076.08 590 594 136.7
C 15 214 225346 1643.76 590 594 136.7
D 1 52 1791491 12790.26 576 560 140.0
D 12 227 807248 5761.11 576 560 140.0
D 13 249 172107 1225.13 576 560 140.0

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