ASTROSAT CZTI

Data Quality Report

Orbit 37681

Creation date: 2024-06-27T21:43:02.721960
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_075T01_9000005342_37681cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37681cztM0_level2_quad_clean.evt
Size (bytes)483,655,68095,921,280
Size461.2 MB 91.5 MB
Events in quadrant A2,698,183646,176
Events in quadrant B2,840,451659,186
Events in quadrant C2,681,002668,780
Events in quadrant D6,098,483589,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110573
B0114212
C0107692
D0214662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4859300.617411%
B48591022.099197%
C4859470.967277%
D485977115.867462%

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 9134 4861 22 22 0.24% 0.45%
B 9134 4859 65 65 0.71% 1.34%
C 9134 4859 31 31 0.34% 0.64%
D 9134 4859 983 983 10.76% 20.23%

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 305902 2626.21 581 570 116.3
A 9 143 99949 854.77 581 570 116.3
A 13 6 17790 148.11 581 570 116.3
B 5 172 208097 1881.02 583 569 110.3
B 5 255 109692 989.08 583 569 110.3
B 0 230 53193 476.98 583 569 110.3
C 15 214 225379 1678.39 586 594 133.9
C 0 10 109991 816.83 586 594 133.9
C 14 254 59243 437.91 586 594 133.9
D 12 227 3395900 25254.58 557 544 134.4
D 5 32 236577 1755.61 557 544 134.4
D 2 249 161248 1195.31 557 544 134.4

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