ASTROSAT CZTI

Data Quality Report

Orbit 20171008_G08_030T01_9000001592_level2

Creation date: 2017-10-18T19:49:16.402714
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/AS1G08_030T01_9000001592cztM0_level2.evt modeM0/AS1G08_030T01_9000001592cztM0_level2_quad_clean.evt
Size (bytes)1,601,219,520239,590,080
Size1.5 GB 228.5 MB
Events in quadrant A15,648,4281,439,346
Events in quadrant B11,769,6301,545,208
Events in quadrant C8,808,2771,536,447
Events in quadrant D11,008,9021,449,337

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0587770
B0468230
C0383380
D0449140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18652204910.985417%
B186527554.047823%
C18652850.455715%
D186522861.533348%

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 23337 18655 1586 1586 6.80% 8.50%
B 23337 18653 374 374 1.60% 2.01%
C 23337 18656 2 2 0.01% 0.01%
D 23337 18656 157 157 0.67% 0.84%

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 4437535 9841.88 2242 2203 450.7
A 13 210 2477964 5493.64 2242 2203 450.7
A 13 251 41916 88.12 2242 2203 450.7
B 4 239 2428997 5568.39 2321 2269 435.8
B 0 214 65265 144.55 2321 2269 435.8
B 15 204 53023 116.46 2321 2269 435.8
C 14 234 17191 28.88 2255 2274 516.6
C 13 61 16682 27.89 2255 2274 516.6
C 5 207 5788 6.8 2255 2274 516.6
D 1 52 1356926 2547.44 2240 2188 531.8
D 5 222 346613 647.65 2240 2188 531.8
D 13 104 258610 482.17 2240 2188 531.8

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