ASTROSAT CZTI

Data Quality Report

Orbit 20160121_G02_047T01_9000000284_level2

Creation date: 2017-10-26T22:22:06.910594
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/AS1G02_047T01_9000000284cztM0_level2.evt modeM0/AS1G02_047T01_9000000284cztM0_level2_quad_clean.evt
Size (bytes)8,570,617,920612,103,680
Size8.0 GB 583.7 MB
Events in quadrant A63,197,1703,736,675
Events in quadrant B66,451,2143,781,595
Events in quadrant C60,575,6383,789,964
Events in quadrant D65,895,1833,639,933

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02249790
B02345440
C02173110
D02328600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01010
D01010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010660
B010660
C010660
D010660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523693730.712253%
B523694160.794363%
C523693210.612958%
D523694750.907025%

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 62184 52374 1980 1980 3.18% 3.78%
B 62184 52374 2513 2513 4.04% 4.80%
C 62184 52374 1662 1662 2.67% 3.17%
D 62184 52373 2696 2696 4.34% 5.15%

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 0 231 411060 100.26 16340 16490 3935.4
A 14 5 162999 37.23 16340 16490 3935.4
A 8 14 152276 34.5 16340 16490 3935.4
B 8 3 981177 241.67 17011 17154 3989.0
B 0 244 852581 209.43 17011 17154 3989.0
B 15 85 103545 21.66 17011 17154 3989.0
C 8 208 170634 35.98 15422 15970 4298.4
C 1 192 143565 29.68 15422 15970 4298.4
C 2 53 56909 9.52 15422 15970 4298.4
D 7 85 7925315 1710.09 14972 15574 4625.3
D 7 204 588006 123.76 14972 15574 4625.3
D 13 105 514031 107.77 14972 15574 4625.3

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