ASTROSAT CZTI

Data Quality Report

Orbit 20181215_A05_074T02_9000002572_level2

Creation date: 2018-12-17T09:39:28.465438
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_074T02_9000002572cztM0_level2_bc.evt modeM0/AS1A05_074T02_9000002572cztM0_level2_quad_clean.evt
Size (bytes)1,049,472,000385,231,680
Size1000.9 MB 367.4 MB
Events in quadrant A6,005,3502,499,234
Events in quadrant B6,910,1212,512,179
Events in quadrant C5,843,6892,381,575
Events in quadrant D11,045,6152,284,633

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0604530
B0644210
C0604210
D0783010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05900
B05900
C05900
D05900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A289593141.084292%
B289596432.220381%
C289594391.515936%
D2895913654.713561%

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 34434 28958 0 0 0.00% 0.00%
B 34434 28959 9 9 0.03% 0.03%
C 34434 28959 1 1 0.00% 0.00%
D 34434 28958 283 283 0.82% 0.98%

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 13 210 13442 35.14 1558 1529 339.0
A 0 226 10367 26.07 1558 1529 339.0
A 12 194 10223 25.64 1558 1529 339.0
B 4 216 269220 909.43 1563 1526 294.4
B 7 220 195902 660.35 1563 1526 294.4
B 0 197 96714 323.38 1563 1526 294.4
C 3 233 82405 237.02 1475 1464 341.5
C 5 218 60271 172.2 1475 1464 341.5
C 13 61 8808 21.51 1475 1464 341.5
D 11 176 1885234 5495.95 1486 1435 342.8
D 13 232 1430508 4169.29 1486 1435 342.8
D 13 189 540384 1572.37 1486 1435 342.8

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