ASTROSAT CZTI

Data Quality Report

Orbit 20191123_T03_149T08_9000003334_level2

Creation date: 2019-11-23T15:53:41.723236
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_149T08_9000003334cztM0_level2_bc.evt modeM0/AS1T03_149T08_9000003334cztM0_level2_quad_clean.evt
Size (bytes)144,518,40049,985,280
Size137.8 MB 47.7 MB
Events in quadrant A830,210306,308
Events in quadrant B1,465,899305,925
Events in quadrant C811,474298,706
Events in quadrant D962,528294,192

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089960
B0113780
C089980
D094090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A43851042.371722%
B43853127.115165%
C43851222.782212%
D43851122.554162%

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 4550 4384 0 0 0.00% 0.00%
B 4550 4384 19 19 0.42% 0.43%
C 4550 4385 0 0 0.00% 0.00%
D 4550 4385 0 0 0.00% 0.00%

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 13 254 5012 98.33 213 209 48.8
A 3 1 2789 52.82 213 209 48.8
A 15 48 2159 39.92 213 209 48.8
B 10 245 633543 14784.48 212 207 42.8
B 4 173 6198 139.85 212 207 42.8
B 12 0 4358 96.9 212 207 42.8
C 10 22 4748 86.45 209 206 52.5
C 13 61 1172 18.39 209 206 52.5
C 0 239 863 12.5 209 206 52.5
D 13 172 70252 1360.32 213 204 51.5
D 7 223 35582 687.03 213 204 51.5
D 9 85 21007 403.99 213 204 51.5

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