ASTROSAT CZTI

Data Quality Report

Orbit 20190119_A05_109T01_9000002662_level2

Creation date: 2019-01-21T11:11:13.794520
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_109T01_9000002662cztM0_level2_bc.evt modeM0/AS1A05_109T01_9000002662cztM0_level2_quad_clean.evt
Size (bytes)934,698,240369,944,640
Size891.4 MB 352.8 MB
Events in quadrant A6,146,1792,315,849
Events in quadrant B6,600,3572,365,315
Events in quadrant C6,023,6432,279,038
Events in quadrant D7,544,5852,241,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0614830
B0628440
C0615330
D0647150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05940
B05940
C05940
D05940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A291453491.197461%
B291453441.180305%
C291454371.499400%
D291453061.049923%

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 34089 29141 7 7 0.02% 0.02%
B 34089 29142 4 4 0.01% 0.01%
C 34089 29141 0 0 0.00% 0.00%
D 34089 29143 35 35 0.10% 0.12%

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 15 174 234638 692.31 1540 1507 336.7
A 0 226 10150 25.67 1540 1507 336.7
A 12 194 10000 25.22 1540 1507 336.7
B 4 216 143411 482.36 1565 1526 294.1
B 0 189 122712 411.99 1565 1526 294.1
B 10 247 67398 223.94 1565 1526 294.1
C 3 233 122433 346.47 1503 1493 349.1
C 9 54 78785 221.43 1503 1493 349.1
C 9 160 26364 71.25 1503 1493 349.1
D 12 110 620724 1758.46 1535 1482 352.2
D 13 168 276672 781.45 1535 1482 352.2
D 5 222 263880 745.13 1535 1482 352.2

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