ASTROSAT CZTI

Data Quality Report

Orbit 20190629_A05_174T01_9000003008_level2

Creation date: 2019-07-03T17:44:16.128961
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/AS1A05_174T01_9000003008cztM0_level2_bc.evt modeM0/AS1A05_174T01_9000003008cztM0_level2_quad_clean.evt
Size (bytes)10,308,513,6003,595,357,440
Size9.6 GB 3.3 GB
Events in quadrant A61,064,33822,958,046
Events in quadrant B67,206,18323,424,193
Events in quadrant C73,091,55822,506,126
Events in quadrant D92,771,12521,835,846

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04440
B04460
C04460
D04460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05701960
B05966050
C06111710
D06873840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054040
B054040
C054040
D054040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26545447611.793531%
B26545575202.832872%
C26545572972.748865%
D265455128014.822286%

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 328867 265466 125 125 0.04% 0.05%
B 328867 265460 674 674 0.20% 0.25%
C 328867 265465 565 565 0.17% 0.21%
D 328867 265448 2244 2244 0.68% 0.85%

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 14 238 2980902 975.89 14077 13816 3040.4
A 4 2 1170306 380.38 14077 13816 3040.4
A 8 205 993404 322.19 14077 13816 3040.4
B 4 142 5528913 2068.87 14171 13808 2665.8
B 7 220 2788045 1040.7 14171 13808 2665.8
B 0 197 1254060 465.25 14171 13808 2665.8
C 3 9 18352685 5666.91 13760 13687 3236.2
C 3 233 911605 277.46 13760 13687 3236.2
C 0 207 408616 122.04 13760 13687 3236.2
D 1 52 32409344 10025.97 13896 13416 3231.2
D 5 222 3050808 940.02 13896 13416 3231.2
D 2 234 1184458 362.42 13896 13416 3231.2

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