ASTROSAT CZTI

Data Quality Report

Orbit 20190429_A05_227T03_9000002872_level2

Creation date: 2019-05-01T12:22:07.464325
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_227T03_9000002872cztM0_level2_bc.evt modeM0/AS1A05_227T03_9000002872cztM0_level2_quad_clean.evt
Size (bytes)320,440,32061,076,160
Size305.6 MB 58.2 MB
Events in quadrant A926,964442,179
Events in quadrant B1,026,324448,708
Events in quadrant C878,584426,387
Events in quadrant D6,555,284212,173

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093920
B097760
C093480
D0340950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4523571.260226%
B45231102.432014%
C45231042.299359%
D4523404589.431793%

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 4633 4524 0 0 0.00% 0.00%
B 4633 4522 0 0 0.00% 0.00%
C 4633 4524 0 0 0.00% 0.00%
D 4633 4522 58 58 1.25% 1.28%

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 5 16 8014 143.38 236 231 54.3
A 13 254 5286 93.13 236 231 54.3
A 11 29 4489 78.44 236 231 54.3
B 15 32 30917 639.8 238 232 48.0
B 7 220 16069 330.21 238 232 48.0
B 4 216 13591 278.54 238 232 48.0
C 3 233 6237 108.12 226 223 55.6
C 13 61 1327 19.85 226 223 55.6
C 12 2 1150 16.67 226 223 55.6
D 10 66 4464038 126691.31 137 132 35.2
D 7 238 1354156 38428.92 137 132 35.2
D 1 52 142521 4041.18 137 132 35.2

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