ASTROSAT CZTI

Data Quality Report

Orbit 20180407_G08_075T01_9000002024_level2

Creation date: 2018-04-09T11:55:22.136714
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/AS1G08_075T01_9000002024cztM0_level2_bc.evt modeM0/AS1G08_075T01_9000002024cztM0_level2_quad_clean.evt
Size (bytes)1,411,274,880539,196,480
Size1.3 GB 514.2 MB
Events in quadrant A9,060,6103,353,716
Events in quadrant B9,374,5523,348,305
Events in quadrant C8,976,4903,585,260
Events in quadrant D12,707,1603,406,928

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0838350
B0868060
C0799920
D0936760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07840
B07840
C07840
D07840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A384138922.322131%
B3841311993.121339%
C384135421.410981%
D3841310432.715227%

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 42349 38417 46 46 0.11% 0.12%
B 42349 38415 14 14 0.03% 0.04%
C 42349 38416 0 0 0.00% 0.00%
D 42349 38415 21 21 0.05% 0.05%

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 9 143 1187367 2727.22 1953 1909 434.7
A 12 96 169415 385.36 1953 1909 434.7
A 15 69 65261 145.75 1953 1909 434.7
B 0 219 981950 2623.38 1944 1893 373.6
B 3 64 291865 776.18 1944 1893 373.6
B 0 189 182348 483.03 1944 1893 373.6
C 3 233 1133829 2402.29 1993 1954 471.2
C 14 234 24659 48.19 1993 1954 471.2
C 8 128 12107 21.55 1993 1954 471.2
D 5 222 2183531 4494.12 1988 1898 485.4
D 8 195 1499054 3084.11 1988 1898 485.4
D 1 52 346497 709.87 1988 1898 485.4

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