ASTROSAT CZTI

Data Quality Report

Orbit 20160811_G05_227T01_9000000592_level2

Creation date: 2017-10-17T23:36:56.187241
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/AS1G05_227T01_9000000592cztM0_level2.evt modeM0/AS1G05_227T01_9000000592cztM0_level2_quad_clean.evt
Size (bytes)4,315,193,280694,828,800
Size4.0 GB 662.6 MB
Events in quadrant A26,939,6414,286,011
Events in quadrant B32,163,3504,332,689
Events in quadrant C29,870,3254,361,864
Events in quadrant D37,773,1454,056,735

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01218770
B01348410
C01310060
D01524620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011860
B011860
C011860
D011860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A584397511.285101%
B5843915852.712230%
C5843914312.448707%
D5843922943.925461%

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 74758 58451 72 72 0.10% 0.12%
B 74758 58451 732 732 0.98% 1.25%
C 74758 58451 711 711 0.95% 1.22%
D 74758 58450 1287 1287 1.72% 2.20%

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 0 118 445733 316.61 6784 6638 1386.9
A 0 226 110508 74.9 6784 6638 1386.9
A 13 14 109943 74.49 6784 6638 1386.9
B 10 16 1964956 1502.27 6841 6676 1303.6
B 14 167 1476128 1127.27 6841 6676 1303.6
B 15 204 835750 636.01 6841 6676 1303.6
C 14 48 3525342 2317.4 6569 6603 1518.4
C 9 16 474519 308.16 6569 6603 1518.4
C 9 247 124196 77.45 6569 6603 1518.4
D 2 63 6328458 4035.75 6464 6276 1566.5
D 13 235 2585391 1646.37 6464 6276 1566.5
D 2 136 1111249 705.36 6464 6276 1566.5

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