ASTROSAT CZTI

Data Quality Report

Orbit 20171119_C03_020T01_9000001706_level2

Creation date: 2018-01-09T06:35:22.211651
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/AS1C03_020T01_9000001706cztM0_level2_bc.evt modeM0/AS1C03_020T01_9000001706cztM0_level2_quad_clean.evt
Size (bytes)3,532,510,080851,618,880
Size3.3 GB 812.2 MB
Events in quadrant A40,134,1595,042,321
Events in quadrant B26,213,8755,381,523
Events in quadrant C13,423,6875,514,879
Events in quadrant D22,583,1855,190,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02668750
B01936230
C01400250
D01789140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013820
B013820
C013820
D013820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A679661353719.917312%
B6796650917.490510%
C679665210.766560%
D6796634165.026042%

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 79167 67966 1012 1012 1.28% 1.49%
B 79167 67966 140 140 0.18% 0.21%
C 79167 67968 0 0 0.00% 0.00%
D 79167 67960 371 371 0.47% 0.55%

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 8 5 26406486 37643.89 3206 3146 701.4
A 1 162 720205 1022.33 3206 3146 701.4
A 1 178 108355 150.0 3206 3146 701.4
B 4 239 7552281 11673.88 3441 3348 646.7
B 10 16 2685535 4147.81 3441 3348 646.7
B 3 64 708455 1090.4 3441 3348 646.7
C 12 4 28318 33.61 3415 3368 742.4
C 13 61 20493 23.07 3415 3368 742.4
C 14 234 19995 22.4 3415 3368 742.4
D 1 52 6281446 8064.75 3361 3235 778.5
D 13 122 949160 1215.1 3361 3235 778.5
D 13 104 559764 714.9 3361 3235 778.5

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