ASTROSAT CZTI

Data Quality Report

Orbit 20181002_A05_212T09_9000002398_level2

Creation date: 2018-10-03T10:56:32.733426
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_212T09_9000002398cztM0_level2_bc.evt modeM0/AS1A05_212T09_9000002398cztM0_level2_quad_clean.evt
Size (bytes)165,594,24074,427,840
Size157.9 MB 71.0 MB
Events in quadrant A1,135,556469,865
Events in quadrant B1,152,986475,826
Events in quadrant C1,058,639463,365
Events in quadrant D1,282,406457,507

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114530
B0114040
C0112790
D0117200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5536420.758671%
B5536240.433526%
C5536540.975434%
D5536340.614162%

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 5536 5536 2 2 0.04% 0.04%
B 5536 5536 0 0 0.00% 0.00%
C 5536 5536 0 0 0.00% 0.00%
D 5536 5536 0 0 0.00% 0.00%

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 15 239 70992 1128.18 277 271 62.7
A 0 226 1896 25.92 277 271 62.7
A 12 194 1800 24.39 277 271 62.7
B 0 189 36541 649.11 280 273 55.9
B 0 198 15470 271.99 280 273 55.9
B 3 64 9956 173.3 280 273 55.9
C 3 233 13243 198.04 270 268 65.5
C 0 207 4421 63.39 270 268 65.5
C 13 61 1510 18.96 270 268 65.5
D 1 52 106636 1604.96 276 266 66.3
D 10 70 87927 1322.67 276 266 66.3
D 2 234 21219 316.15 276 266 66.3

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