ASTROSAT CZTI

Data Quality Report

Orbit 33179

Creation date: 2024-06-27T20:45:46.886088
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_080T02_9000004768_33179cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33179cztM0_level2_quad_clean.evt
Size (bytes)479,427,84052,666,560
Size457.2 MB 50.2 MB
Events in quadrant A2,521,715311,341
Events in quadrant B3,858,730313,272
Events in quadrant C2,783,853313,231
Events in quadrant D5,004,409294,090

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105043
B0147542
C0113222
D0184812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517770.135213%
B51774548.769558%
C5177961.854356%
D51773867.456056%

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 7269 5178 0 0 0.00% 0.00%
B 7269 5178 302 302 4.15% 5.83%
C 7269 5178 75 75 1.03% 1.45%
D 7269 5178 310 310 4.26% 5.99%

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 13 6 17219 129.51 647 635 128.1
A 13 254 9992 73.07 647 635 128.1
A 3 137 5754 39.98 647 635 128.1
B 5 172 1097050 9501.85 615 601 115.4
B 0 219 144809 1249.71 615 601 115.4
B 0 230 35394 301.52 615 601 115.4
C 0 10 246876 1724.0 626 632 142.8
C 14 67 58758 406.95 626 632 142.8
C 1 241 10688 70.4 626 632 142.8
D 8 195 897577 6069.38 613 599 147.8
D 2 250 592007 4001.75 613 599 147.8
D 12 218 319359 2156.88 613 599 147.8

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