ASTROSAT CZTI

Data Quality Report

Orbit 20171222_G08_065T01_9000001796_level2

Creation date: 2021-08-10T21:45:16.618351
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G08_065T01_9000001796cztM0_level2_bc.evt modeM0/AS1G08_065T01_9000001796cztM0_level2_quad_clean.evt
Size (bytes)19,238,186,8806,328,272,960
Size17.9 GB 5.9 GB
Events in quadrant A131,254,91340,707,011
Events in quadrant B167,818,32639,715,344
Events in quadrant C97,017,99540,611,198
Events in quadrant D155,114,00639,000,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011024530
B012731570
C09668400
D011492240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07390
B07390
C07390
D07390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094100
B094100
C094100
D094100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A462155154713.347578%
B462149308406.673173%
C46215342710.924153%
D462148137832.982378%

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 535809 462143 3379 3379 0.63% 0.73%
B 535809 462116 1280 1280 0.24% 0.28%
C 535809 462163 147 147 0.03% 0.03%
D 535809 462142 2693 2693 0.50% 0.58%

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 14 63 25401116 4899.42 24017 23598 5179.7
A 1 162 3654572 701.0 24017 23598 5179.7
A 13 248 3227360 618.52 24017 23598 5179.7
B 4 239 43134753 9750.8 23492 22891 4421.4
B 0 85 6257091 1410.02 23492 22891 4421.4
B 15 204 5418013 1220.24 23492 22891 4421.4
C 15 208 4134369 803.05 23509 23222 5119.4
C 14 234 347035 63.25 23509 23222 5119.4
C 3 233 234209 41.21 23509 23222 5119.4
D 1 52 28221225 5201.75 23603 22841 5420.9
D 8 195 12131666 2233.71 23603 22841 5420.9
D 14 34 5115302 939.41 23603 22841 5420.9

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