ASTROSAT CZTI

Data Quality Report

Orbit 20170809_G07_014T01_9000001450_level2

Creation date: 2017-09-24T14:46:38.376963
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/AS1G07_014T01_9000001450cztM0_level2.evt modeM0/AS1G07_014T01_9000001450cztM0_level2_quad_clean.evt
Size (bytes)1,901,664,000385,110,720
Size1.8 GB 367.3 MB
Events in quadrant A12,209,4352,517,266
Events in quadrant B13,547,7062,538,611
Events in quadrant C11,677,1002,538,683
Events in quadrant D18,423,9722,304,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05280
B05210
C05240
D05300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0450
C0440
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537420
B0576190
C0529310
D0713440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A256962861.113014%
B256834681.822217%
C256932350.914646%
D2544416866.626317%

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 45628 26713 0 0 0.00% 0.00%
B 45628 26704 148 148 0.32% 0.55%
C 45628 26690 7 7 0.02% 0.03%
D 45628 26444 1381 1381 3.03% 5.22%

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 8 15 319156 517.85 3058 2997 610.5
A 0 8 39220 59.33 3058 2997 610.5
A 8 5 32170 47.78 3058 2997 610.5
B 4 81 700123 1230.75 3056 2989 566.4
B 0 214 338087 591.6 3056 2989 566.4
B 4 174 239579 417.69 3056 2989 566.4
C 14 234 78760 112.68 2953 2972 672.6
C 10 22 32000 43.16 2953 2972 672.6
C 14 67 26222 34.57 2953 2972 672.6
D 1 52 3227281 4380.68 2839 2771 736.1
D 8 195 1177084 1595.37 2839 2771 736.1
D 12 110 1098126 1488.1 2839 2771 736.1

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