ASTROSAT CZTI

Data Quality Report

Orbit 20151204_P01_998T02_9000000190_level2

Creation date: 2016-09-06T17:57:01.041750
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/AS1P01_998T02_9000000190cztM0_level2_bc.evt modeM0/AS1P01_998T02_9000000190cztM0_level2_quad_clean.evt
Size (bytes)13,270,080,9606,249,064,320
Size12.4 GB 5.8 GB
Events in quadrant A73,614,63441,310,318
Events in quadrant B83,204,00241,029,445
Events in quadrant C112,359,49939,688,361
Events in quadrant D104,422,77238,825,597

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084640
B084620
C084640
D084640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05920
B05920
C05920
D05920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017421420
B018211390
C018183650
D017513380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41529717330.417292%
B41529626990.649898%
C41529265991.589002%
D415283115762.787497%

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 509941 415355 107 107 0.02% 0.03%
B 509941 415340 120 120 0.02% 0.03%
C 509941 415340 2111 2111 0.41% 0.51%
D 509941 414802 2347 2347 0.46% 0.57%

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 0 253 1013023 260.9 18257 17879 3814.3
A 4 32 780912 200.04 18257 17879 3814.3
A 15 233 301673 74.4 18257 17879 3814.3
B 15 22 1794627 541.82 18495 17977 3279.0
B 5 249 1778326 536.85 18495 17977 3279.0
B 5 191 1320841 397.33 18495 17977 3279.0
C 15 241 19735018 5356.55 17618 17255 3681.1
C 8 208 12771317 3464.78 17618 17255 3681.1
C 0 191 5049274 1367.0 17618 17255 3681.1
D 12 22 13472439 3484.26 17618 17063 3861.8
D 1 4 4883690 1260.21 17618 17063 3861.8
D 1 83 4004437 1032.53 17618 17063 3861.8

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
Veto Counter