ASTROSAT CZTI

Data Quality Report

Orbit 11076

Creation date: 2024-06-27T16:07:58.210622
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/AS1G08_028T01_9000001618_11076cztM0_level2.evt modeM0/AS1G08_028T01_9000001618_11076cztM0_level2_quad_clean.evt
Size (bytes)439,211,52076,518,720
Size418.9 MB 73.0 MB
Events in quadrant A3,269,673484,310
Events in quadrant B3,728,830482,814
Events in quadrant C2,698,437480,529
Events in quadrant D3,203,046456,774

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134672
B0150271
C0121981
D0134641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59051823.082134%
B59053095.232854%
C5905470.795936%
D59051212.049111%

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 6260 5906 34 34 0.54% 0.58%
B 6260 5906 120 120 1.92% 2.03%
C 6260 5906 0 0 0.00% 0.00%
D 6260 5906 60 60 0.96% 1.02%

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 8 15 477481 3204.36 719 701 148.8
A 14 238 9879 61.68 719 701 148.8
A 0 226 6509 39.03 719 701 148.8
B 4 239 818198 5920.56 708 691 138.1
B 0 214 42151 300.26 708 691 138.1
B 15 204 24578 172.99 708 691 138.1
C 13 61 5175 27.63 691 695 162.1
C 14 234 2184 9.18 691 695 162.1
C 12 4 2045 8.33 691 695 162.1
D 10 253 215892 1278.95 690 670 168.3
D 1 52 151059 893.68 690 670 168.3
D 8 195 121471 717.86 690 670 168.3

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