ASTROSAT CZTI

Data Quality Report

Orbit 20180917_T02_101T01_9000002372_level2

Creation date: 2018-09-17T16:31:15.262147
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/AS1T02_101T01_9000002372cztM0_level2_bc.evt modeM0/AS1T02_101T01_9000002372cztM0_level2_quad_clean.evt
Size (bytes)455,500,800212,112,000
Size434.4 MB 202.3 MB
Events in quadrant A3,372,1381,367,930
Events in quadrant B3,071,1101,387,159
Events in quadrant C2,787,0821,363,363
Events in quadrant D3,590,2201,326,731

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300540
B0294690
C0289430
D0310670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141801711.205924%
B141801701.198872%
C141801911.346968%
D141802591.826516%

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 15826 14179 4 4 0.03% 0.03%
B 15826 14179 2 2 0.01% 0.01%
C 15826 14179 0 0 0.00% 0.00%
D 15826 14179 100 100 0.63% 0.71%

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 3 80 495982 3116.53 717 704 158.9
A 15 69 51935 322.37 717 704 158.9
A 12 96 32283 198.71 717 704 158.9
B 15 222 67594 479.16 725 708 139.6
B 4 216 43673 307.8 725 708 139.6
B 0 182 23440 162.85 725 708 139.6
C 3 233 72995 433.45 700 695 166.8
C 10 22 7244 39.26 700 695 166.8
C 0 207 5111 26.47 700 695 166.8
D 1 52 439313 2635.61 711 686 166.4
D 12 218 203687 1219.79 711 686 166.4
D 2 152 57867 343.59 711 686 166.4

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