ASTROSAT CZTI

Data Quality Report

Orbit 20190523_C04_009T05_9000002946_level2

Creation date: 2019-05-27T14:33:17.453844
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/AS1C04_009T05_9000002946cztM0_level2_bc.evt modeM0/AS1C04_009T05_9000002946cztM0_level2_quad_clean.evt
Size (bytes)209,563,20095,927,040
Size199.9 MB 91.5 MB
Events in quadrant A1,094,203643,116
Events in quadrant B1,227,053649,273
Events in quadrant C1,341,320621,811
Events in quadrant D2,285,219589,706

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116520
B0120470
C0123620
D0162750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5740691.202091%
B5740701.219512%
C57401091.898955%
D57404537.891986%

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 5753 5739 0 0 0.00% 0.00%
B 5754 5740 1 1 0.02% 0.02%
C 5753 5739 0 0 0.00% 0.00%
D 5753 5739 62 62 1.08% 1.08%

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 0 254 6898 101.87 280 274 65.0
A 13 254 5539 80.97 280 274 65.0
A 8 205 3411 48.25 280 274 65.0
B 4 216 39052 676.73 282 274 57.3
B 7 220 29204 504.87 282 274 57.3
B 4 171 29172 504.31 282 274 57.3
C 3 233 286536 4326.36 269 266 66.2
C 7 247 18701 278.61 269 266 66.2
C 13 61 1563 19.6 269 266 66.2
D 1 52 720727 11127.46 266 255 64.7
D 7 238 391432 6041.6 266 255 64.7
D 12 218 94173 1450.53 266 255 64.7

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