ASTROSAT CZTI

Data Quality Report

Orbit 20190711_A05_198T01_9000003024_level2

Creation date: 2019-07-30T16:03:28.659484
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/AS1A05_198T01_9000003024cztM0_level2_bc.evt modeM0/AS1A05_198T01_9000003024cztM0_level2_quad_clean.evt
Size (bytes)2,502,823,680951,802,560
Size2.3 GB 907.7 MB
Events in quadrant A15,000,7626,162,547
Events in quadrant B17,333,1046,226,573
Events in quadrant C16,620,3025,926,077
Events in quadrant D22,082,6045,724,483

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014220
B014220
C014220
D014220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01463340
B01559880
C01541890
D01740850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6985010231.464567%
B6985115582.230462%
C6985115052.154586%
D6985128754.115904%

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 80900 69843 0 0 0.00% 0.00%
B 80901 69843 11 11 0.01% 0.02%
C 80901 69845 11 11 0.01% 0.02%
D 80901 69845 219 219 0.27% 0.31%

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 15 222 229934 274.12 3816 3740 825.2
A 13 254 69937 80.22 3816 3740 825.2
A 12 16 40210 44.2 3816 3740 825.2
B 0 189 742638 1024.52 3832 3737 721.2
B 7 220 617312 850.75 3832 3737 721.2
B 0 197 306889 420.33 3832 3737 721.2
C 3 233 1296513 1512.95 3670 3656 854.5
C 3 9 887447 1034.24 3670 3656 854.5
C 9 221 194058 222.81 3670 3656 854.5
D 15 0 2787209 3202.4 3714 3579 869.2
D 1 52 2462050 2828.32 3714 3579 869.2
D 12 218 1129725 1295.56 3714 3579 869.2

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