ASTROSAT CZTI

Data Quality Report

Orbit 20170409_T01_163T01_9000001152_level2

Creation date: 2017-09-23T16:21:45.409612
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/AS1T01_163T01_9000001152cztM0_level2.evt modeM0/AS1T01_163T01_9000001152cztM0_level2_quad_clean.evt
Size (bytes)4,901,420,160912,723,840
Size4.6 GB 870.4 MB
Events in quadrant A36,569,9545,745,527
Events in quadrant B35,829,9355,823,123
Events in quadrant C33,483,1355,671,011
Events in quadrant D37,727,8125,499,095

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014620
B014620
C014620
D014620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01565740
B01530150
C01489530
D01621150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7154915172.120225%
B7155011301.579315%
C715496180.863744%
D7155012101.691125%

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 82122 71563 391 391 0.48% 0.55%
B 82122 71564 52 52 0.06% 0.07%
C 82122 71566 90 90 0.11% 0.13%
D 82122 71563 356 356 0.43% 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 0 23 1670257 944.26 8684 8499 1759.9
A 0 254 821186 461.79 8684 8499 1759.9
A 15 234 378084 210.01 8684 8499 1759.9
B 0 214 899576 542.94 8719 8522 1641.2
B 10 16 286251 169.23 8719 8522 1641.2
B 0 219 191785 111.67 8719 8522 1641.2
C 9 54 647029 328.45 8401 8434 1944.3
C 10 9 70343 31.84 8401 8434 1944.3
C 13 61 64448 28.81 8401 8434 1944.3
D 1 52 2547742 1150.51 8355 8172 2207.3
D 8 230 821035 368.25 8355 8172 2207.3
D 2 14 779678 349.52 8355 8172 2207.3

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