ASTROSAT CZTI

Data Quality Report

Orbit 31608

Creation date: 2024-06-27T20:30:40.536234
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/AS1A10_094T75_9000004614_31608cztM0_level2.evt modeM0/AS1A10_094T75_9000004614_31608cztM0_level2_quad_clean.evt
Size (bytes)676,362,240142,349,760
Size645.0 MB 135.8 MB
Events in quadrant A5,314,522924,582
Events in quadrant B5,965,003974,889
Events in quadrant C3,839,973959,642
Events in quadrant D4,850,473923,750

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208352
B0233262
C0162862
D0192152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A759280510.603267%
B75931892.489135%
C75931872.462795%
D75933504.609509%

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 9272 7594 478 478 5.16% 6.29%
B 9273 7595 43 43 0.46% 0.57%
C 9273 7595 28 28 0.30% 0.37%
D 9273 7595 264 264 2.85% 3.48%

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 1898567 10852.45 874 854 174.9
A 15 174 27550 152.67 874 854 174.9
A 13 254 13934 74.8 874 854 174.9
B 6 159 2099650 12153.04 905 881 172.7
B 0 229 128554 739.3 905 881 172.7
B 4 80 81944 469.4 905 881 172.7
C 14 238 145167 699.54 882 884 206.3
C 3 233 122724 590.72 882 884 206.3
C 12 175 58945 281.5 882 884 206.3
D 12 218 753849 3565.81 878 851 211.2
D 8 195 273740 1292.26 878 851 211.2
D 12 233 210363 992.14 878 851 211.2

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