ASTROSAT CZTI

Data Quality Report

Orbit 20190105_A05_186T02_9000002624_level2

Creation date: 2019-01-08T09:23:56.393295
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_186T02_9000002624cztM0_level2_bc.evt modeM0/AS1A05_186T02_9000002624cztM0_level2_quad_clean.evt
Size (bytes)1,631,295,360555,462,720
Size1.5 GB 529.7 MB
Events in quadrant A9,384,2693,510,549
Events in quadrant B12,030,8323,515,054
Events in quadrant C10,099,0433,370,878
Events in quadrant D14,788,3763,307,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09240
B09240
C09240
D09240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0942780
B01037470
C0950220
D01123380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A454567671.687346%
B4545613422.952306%
C454569622.116332%
D4545617393.825678%

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 50866 45455 4 4 0.01% 0.01%
B 50866 45454 92 92 0.18% 0.20%
C 50866 45453 0 0 0.00% 0.00%
D 50866 45454 320 320 0.63% 0.70%

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 14 237 278361 530.6 2345 2289 520.3
A 15 174 117518 221.46 2345 2289 520.3
A 12 194 15313 25.03 2345 2289 520.3
B 10 245 2084462 4702.54 2333 2270 442.8
B 0 189 256337 573.8 2333 2270 442.8
B 0 229 208246 465.19 2333 2270 442.8
C 3 233 1304619 2505.32 2231 2209 519.9
C 5 218 164413 312.02 2231 2209 519.9
C 5 219 19971 34.17 2231 2209 519.9
D 1 52 4426732 8364.23 2276 2194 529.0
D 7 238 911338 1718.66 2276 2194 529.0
D 2 234 183460 342.67 2276 2194 529.0

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