ASTROSAT CZTI

Data Quality Report

Orbit 20200615_A08_003T17_9000003720_level2

Creation date: 2021-01-10T13:47:06.080048
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/AS1A08_003T17_9000003720cztM0_level2_bc.evt modeM0/AS1A08_003T17_9000003720cztM0_level2_quad_clean.evt
Size (bytes)2,408,883,840761,535,360
Size2.2 GB 726.3 MB
Events in quadrant A13,234,5224,914,870
Events in quadrant B19,863,0374,786,540
Events in quadrant C12,641,3494,663,199
Events in quadrant D23,064,4794,522,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01276430
B01548870
C01276340
D01591640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012420
B012420
C012420
D012420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A609055910.970364%
B6090535975.905919%
C609059381.540103%
D6090513902.282243%

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 70430 60910 0 0 0.00% 0.00%
B 70430 60898 378 378 0.54% 0.62%
C 70430 60907 5 5 0.01% 0.01%
D 70430 60906 75 75 0.11% 0.12%

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 13 254 84593 111.06 3420 3366 731.4
A 13 220 31231 38.1 3420 3366 731.4
A 0 226 21920 25.37 3420 3366 731.4
B 3 64 6335302 10105.28 3364 3296 626.6
B 0 190 162366 253.86 3364 3296 626.6
B 0 229 150309 234.62 3364 3296 626.6
C 2 16 101431 129.78 3228 3218 756.7
C 3 233 48887 60.35 3228 3218 756.7
C 0 239 30376 35.89 3228 3218 756.7
D 1 52 4309373 5708.79 3288 3178 754.3
D 8 195 3354296 4442.63 3288 3178 754.3
D 7 238 1327624 1755.84 3288 3178 754.3

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