ASTROSAT CZTI

Data Quality Report

Orbit 04423

Creation date: 2024-06-27T14:41:46.136587
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/AS1G05_230T04_9000000550_04423cztM0_level2.evt modeM0/AS1G05_230T04_9000000550_04423cztM0_level2_quad_clean.evt
Size (bytes)1,516,527,360212,829,120
Size1.4 GB 203.0 MB
Events in quadrant A8,126,1621,366,665
Events in quadrant B9,291,1131,347,634
Events in quadrant C7,722,2421,364,636
Events in quadrant D19,680,4541,231,519

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03340
B03340
C03340
D03340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360174
B0393373
C0353903
D0702283

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164432381.447424%
B164434012.438728%
C16443970.589917%
D16443270316.438606%

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 17653 16445 124 124 0.70% 0.75%
B 17653 16445 275 275 1.56% 1.67%
C 17653 16445 57 57 0.32% 0.35%
D 17653 16445 2921 2921 16.55% 17.76%

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 0 13 908811 2495.02 1797 1757 363.5
A 13 251 157810 429.25 1797 1757 363.5
A 0 50 68235 182.86 1797 1757 363.5
B 14 167 1396011 4056.4 1812 1767 343.7
B 10 16 730902 2121.34 1812 1767 343.7
B 15 204 52733 148.28 1812 1767 343.7
C 14 48 818881 2015.01 1752 1759 405.5
C 12 4 39522 93.12 1752 1759 405.5
C 9 16 15532 33.96 1752 1759 405.5
D 13 114 11412335 28209.86 1677 1631 404.5
D 13 53 865612 2135.96 1677 1631 404.5
D 12 233 182773 447.82 1677 1631 404.5

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