ASTROSAT CZTI

Data Quality Report

Orbit 20191228_A07_091T04_9000003394_level2

Creation date: 2019-12-31T11:19:58.476575
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/AS1A07_091T04_9000003394cztM0_level2_bc.evt modeM0/AS1A07_091T04_9000003394cztM0_level2_quad_clean.evt
Size (bytes)1,108,877,760373,800,960
Size1.0 GB 356.5 MB
Events in quadrant A5,945,8012,384,077
Events in quadrant B9,746,6572,267,555
Events in quadrant C5,877,1022,331,657
Events in quadrant D9,965,4262,279,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06140
B06140
C06140
D06140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0614510
B0824480
C0620790
D0754240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A299413241.082128%
B29941320510.704385%
C299414991.666611%
D2994111123.713971%

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 33881 29942 0 0 0.00% 0.00%
B 33881 29941 69 69 0.20% 0.23%
C 33881 29943 0 0 0.00% 0.00%
D 33881 29944 151 151 0.45% 0.50%

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 13 170 69838 200.77 1521 1486 340.4
A 13 254 44719 126.99 1521 1486 340.4
A 15 174 10579 26.71 1521 1486 340.4
B 5 31 3443957 12248.62 1458 1423 281.1
B 5 15 392040 1389.82 1458 1423 281.1
B 0 189 95671 335.33 1458 1423 281.1
C 7 247 155662 444.5 1469 1459 346.9
C 0 10 42528 118.38 1469 1459 346.9
C 0 239 18724 49.77 1469 1459 346.9
D 1 52 2765839 7875.04 1485 1428 351.0
D 12 233 537006 1525.71 1485 1428 351.0
D 13 153 282102 799.56 1485 1428 351.0

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