ASTROSAT CZTI

Data Quality Report

Orbit 20190326_A06_003T07_9000002818_level2

Creation date: 2019-03-28T11:02:55.701510
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/AS1A06_003T07_9000002818cztM0_level2_bc.evt modeM0/AS1A06_003T07_9000002818cztM0_level2_quad_clean.evt
Size (bytes)4,805,196,4801,518,963,840
Size4.5 GB 1.4 GB
Events in quadrant A32,873,2889,917,146
Events in quadrant B41,605,4779,391,499
Events in quadrant C22,773,7379,696,182
Events in quadrant D40,688,7859,366,181

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022700
B022700
C022700
D022700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02595560
B03171480
C02319470
D02884810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11138234113.062434%
B1113821228511.029610%
C11138219901.786644%
D11138244453.990771%

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 126331 111386 1069 1069 0.85% 0.96%
B 126331 111295 852 852 0.67% 0.77%
C 126331 111388 67 67 0.05% 0.06%
D 126331 111385 1008 1008 0.80% 0.90%

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 6 16 10290936 8242.64 5759 5656 1247.8
A 13 254 150337 115.95 5759 5656 1247.8
A 0 13 102110 77.3 5759 5656 1247.8
B 3 112 16974304 16293.06 5517 5389 1041.5
B 7 220 987845 943.33 5517 5389 1041.5
B 0 189 928722 886.56 5517 5389 1041.5
C 3 233 583617 442.03 5576 5542 1307.8
C 12 4 427762 322.85 5576 5542 1307.8
C 9 54 181969 134.91 5576 5542 1307.8
D 1 52 4985035 3756.67 5657 5457 1325.5
D 7 238 3214406 2420.88 5657 5457 1325.5
D 12 110 2890362 2176.42 5657 5457 1325.5

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