ASTROSAT CZTI

Data Quality Report

Orbit 20170213_G06_116T01_9000001026_level2

Creation date: 2017-09-23T03:47:25.294329
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/AS1G06_116T01_9000001026cztM0_level2.evt modeM0/AS1G06_116T01_9000001026cztM0_level2_quad_clean.evt
Size (bytes)4,346,075,5201,213,323,840
Size4.0 GB 1.1 GB
Events in quadrant A30,353,1858,069,179
Events in quadrant B31,402,9918,234,231
Events in quadrant C29,433,6958,151,949
Events in quadrant D35,955,5897,754,117

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01377230
B01395770
C01354440
D01504520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013540
B013540
C013540
D013540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A662797481.128563%
B662787461.125562%
C662794260.642738%
D6627910451.576668%

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 77434 66288 158 158 0.20% 0.24%
B 77434 66291 89 89 0.11% 0.13%
C 77434 66291 8 8 0.01% 0.01%
D 77434 66287 533 533 0.69% 0.80%

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 15 239 706262 460.45 7613 7447 1517.7
A 15 234 174373 109.99 7613 7447 1517.7
A 8 15 105777 64.79 7613 7447 1517.7
B 0 214 780193 540.21 7697 7512 1430.3
B 4 173 303952 207.25 7697 7512 1430.3
B 4 81 266638 181.17 7697 7512 1430.3
C 9 68 120966 66.76 7469 7493 1699.8
C 1 16 106573 58.29 7469 7493 1699.8
C 13 61 58200 29.83 7469 7493 1699.8
D 12 221 2092916 1160.38 7415 7173 1797.5
D 2 14 1256748 695.19 7415 7173 1797.5
D 13 105 943978 521.18 7415 7173 1797.5

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