ASTROSAT CZTI

Data Quality Report

Orbit 20190721_A06_005T02_9000003048_level2

Creation date: 2019-07-23T11:10:04.322239
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/AS1A06_005T02_9000003048cztM0_level2_bc.evt modeM0/AS1A06_005T02_9000003048cztM0_level2_quad_clean.evt
Size (bytes)2,960,187,840975,729,600
Size2.8 GB 930.5 MB
Events in quadrant A16,020,8586,496,357
Events in quadrant B16,845,1006,440,497
Events in quadrant C16,649,1676,166,054
Events in quadrant D35,487,3755,769,501

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01190
C01190
D01190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01466660
B01509800
C01502000
D02145480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013920
B013920
C013920
D013920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A682766240.913938%
B6827610541.543734%
C6827610021.467573%
D6827661438.997305%

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 80046 68277 11 11 0.01% 0.02%
B 80046 68275 86 86 0.11% 0.13%
C 80046 68279 5 5 0.01% 0.01%
D 80046 68278 2226 2226 2.78% 3.26%

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 12 16 902008 1100.3 3749 3676 816.4
A 5 16 444001 539.32 3749 3676 816.4
A 12 194 177340 212.71 3749 3676 816.4
B 7 220 740011 1044.0 3724 3636 705.3
B 3 64 433822 609.9 3724 3636 705.3
B 0 190 216121 301.25 3724 3636 705.3
C 8 208 1371234 1642.76 3537 3517 832.6
C 3 233 841268 1006.22 3537 3517 832.6
C 3 9 694267 829.66 3537 3517 832.6
D 1 52 9876357 12082.91 3514 3395 817.1
D 5 222 5239990 6408.75 3514 3395 817.1
D 1 20 2867703 3505.45 3514 3395 817.1

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