ASTROSAT CZTI

Data Quality Report

Orbit 20180919_A04_209T01_9000002378_level2

Creation date: 2018-09-22T11:04:08.603899
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/AS1A04_209T01_9000002378cztM0_level2_bc.evt modeM0/AS1A04_209T01_9000002378cztM0_level2_quad_clean.evt
Size (bytes)2,449,537,920899,660,160
Size2.3 GB 858.0 MB
Events in quadrant A16,301,4785,644,598
Events in quadrant B16,659,1035,744,500
Events in quadrant C16,317,1395,484,998
Events in quadrant D19,998,2925,438,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014700
B014700
C014700
D014700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01566600
B01573920
C01573210
D01651620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7198513991.943460%
B7198510851.507258%
C7198514542.019865%
D7198514071.954574%

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 83606 71974 2 2 0.00% 0.00%
B 83606 71972 3 3 0.00% 0.00%
C 83606 71974 23 23 0.03% 0.03%
D 83606 71975 389 389 0.47% 0.54%

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 15 174 1361373 1651.04 3799 3720 822.3
A 0 253 167037 198.61 3799 3720 822.3
A 15 239 141775 167.89 3799 3720 822.3
B 0 189 835652 1162.29 3829 3730 715.8
B 4 173 507393 703.67 3829 3730 715.8
B 3 209 114791 155.16 3829 3730 715.8
C 9 236 1808272 2117.09 3654 3627 852.4
C 3 233 374223 434.76 3654 3627 852.4
C 0 207 63732 70.51 3654 3627 852.4
D 15 0 2017318 2344.36 3764 3631 859.0
D 1 52 1980101 2301.03 3764 3631 859.0
D 5 222 864494 1002.23 3764 3631 859.0

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