ASTROSAT CZTI

Data Quality Report

Orbit 04075

Creation date: 2024-06-27T14:37:03.885442
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_222T01_9000000520_04075cztM0_level2.evt modeM0/AS1G05_222T01_9000000520_04075cztM0_level2_quad_clean.evt
Size (bytes)1,110,453,120153,904,320
Size1.0 GB 146.8 MB
Events in quadrant A7,255,885921,642
Events in quadrant B7,384,345924,532
Events in quadrant C8,345,803906,541
Events in quadrant D9,640,033883,485

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03028
B03024
C03024
D03022

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032302333
B032499511
C035769487
D040711895

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148764523.038451%
B148244863.278467%
C148434923.314694%
D1480713128.860674%

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 15413 15016 52 52 0.34% 0.35%
B 15413 15002 117 117 0.76% 0.78%
C 15413 15005 125 125 0.81% 0.83%
D 15413 14965 964 964 6.25% 6.44%

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 50 545355 1545.13 1707 1666 351.9
A 8 15 99317 277.52 1707 1666 351.9
A 0 118 22703 59.79 1707 1666 351.9
B 10 16 362723 1088.38 1711 1668 331.7
B 15 204 160143 477.71 1711 1668 331.7
B 7 252 116193 345.23 1711 1668 331.7
C 9 144 1890071 4896.38 1650 1658 385.7
C 13 61 13527 30.77 1650 1658 385.7
C 10 21 5406 9.72 1650 1658 385.7
D 2 232 3113948 7936.06 1614 1568 392.2
D 10 172 125375 315.69 1614 1568 392.2
D 13 239 121627 306.13 1614 1568 392.2

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