ASTROSAT CZTI

Data Quality Report

Orbit 20200423_T03_194T01_9000003620_level2

Creation date: 2020-06-09T23:27:33.749399
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/AS1T03_194T01_9000003620cztM0_level2_bc.evt modeM0/AS1T03_194T01_9000003620cztM0_level2_quad_clean.evt
Size (bytes)6,607,892,1602,065,328,640
Size6.2 GB 1.9 GB
Events in quadrant A34,352,26313,620,153
Events in quadrant B36,668,30013,625,339
Events in quadrant C69,519,37412,728,664
Events in quadrant D49,773,13112,693,320

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02610
B02630
C02630
D02630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03274200
B03366620
C04533890
D03757970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015680
B015680
C015680
D015680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15444319291.249004%
B15444325511.651742%
C15444251323.322930%
D15444239662.567954%

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 184078 154421 71 71 0.04% 0.05%
B 184077 154419 57 57 0.03% 0.04%
C 184078 154418 96 96 0.05% 0.06%
D 184078 154421 567 567 0.31% 0.37%

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 3 1 751590 405.23 8645 8507 1833.7
A 13 254 217632 114.04 8645 8507 1833.7
A 10 255 124339 63.17 8645 8507 1833.7
B 3 64 861691 532.26 8633 8438 1603.1
B 0 230 846882 523.03 8633 8438 1603.1
B 0 189 573380 352.41 8633 8438 1603.1
C 7 247 35418521 18688.39 8131 8110 1894.8
C 2 16 1227187 643.39 8131 8110 1894.8
C 10 91 942310 493.04 8131 8110 1894.8
D 1 52 10216783 5298.94 8405 8125 1926.5
D 8 195 3104639 1607.29 8405 8125 1926.5
D 12 233 1697052 876.66 8405 8125 1926.5

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