ASTROSAT CZTI

Data Quality Report

Orbit 37674

Creation date: 2024-06-27T21:42:57.583869
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_37674cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37674cztM0_level2_quad_clean.evt
Size (bytes)1,082,211,840180,590,400
Size1.0 GB 172.2 MB
Events in quadrant A8,450,1801,093,892
Events in quadrant B7,575,5011,120,847
Events in quadrant C7,673,2751,123,184
Events in quadrant D8,029,8781,063,871

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343165
B0325094
C0320014
D0344634

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154771030.665504%
B15477840.542741%
C15477230.148608%
D154771500.969180%

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 19714 15480 62 62 0.31% 0.40%
B 19713 15476 59 59 0.30% 0.38%
C 19713 15476 14 14 0.07% 0.09%
D 19713 15476 130 130 0.66% 0.84%

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 782079 2230.0 1759 1726 349.9
A 9 143 329526 936.75 1759 1726 349.9
A 6 10 282790 803.19 1759 1726 349.9
B 5 172 258197 758.04 1756 1704 338.4
B 0 230 110005 320.07 1756 1704 338.4
B 4 81 80068 231.6 1756 1704 338.4
C 15 214 703163 1758.82 1726 1736 398.8
C 0 10 129046 319.23 1726 1736 398.8
C 14 254 87790 215.78 1726 1736 398.8
D 5 222 285821 682.66 1720 1669 416.2
D 10 199 230246 549.14 1720 1669 416.2
D 7 38 194295 462.77 1720 1669 416.2

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