ASTROSAT CZTI

Data Quality Report

Orbit 20170201_G06_154T04_9000000998_level2

Creation date: 2017-09-23T00:58:02.842640
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/AS1G06_154T04_9000000998cztM0_level2.evt modeM0/AS1G06_154T04_9000000998cztM0_level2_quad_clean.evt
Size (bytes)2,892,672,000519,007,680
Size2.7 GB 495.0 MB
Events in quadrant A19,769,6173,257,182
Events in quadrant B19,579,3513,327,381
Events in quadrant C18,841,8433,283,831
Events in quadrant D26,671,8723,062,821

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08280
B08280
C08280
D08280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0872660
B0857510
C0842120
D01080390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4060511642.866642%
B406055561.369289%
C406054341.068834%
D4060529527.270041%

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 46455 40606 162 162 0.35% 0.40%
B 46455 40607 26 26 0.06% 0.06%
C 46455 40607 9 9 0.02% 0.02%
D 46455 40608 2493 2493 5.37% 6.14%

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 15 239 1026560 1058.64 4756 4654 965.3
A 15 234 142973 143.29 4756 4654 965.3
A 8 15 124686 124.35 4756 4654 965.3
B 0 214 413058 440.6 4858 4735 926.7
B 4 81 190063 199.98 4858 4735 926.7
B 12 111 96014 98.5 4858 4735 926.7
C 9 68 386040 350.43 4703 4719 1088.2
C 1 16 89577 77.98 4703 4719 1088.2
C 13 61 36204 28.93 4703 4719 1088.2
D 12 221 5834135 5203.92 4580 4444 1120.2
D 2 216 1261457 1122.08 4580 4444 1120.2
D 2 14 869101 771.84 4580 4444 1120.2

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