ASTROSAT CZTI

Data Quality Report

Orbit 20190317_A05_156T01_9000002804_level2

Creation date: 2019-04-09T14:47:20.561187
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_156T01_9000002804cztM0_level2_bc.evt modeM0/AS1A05_156T01_9000002804cztM0_level2_quad_clean.evt
Size (bytes)2,349,083,520922,792,320
Size2.2 GB 880.0 MB
Events in quadrant A15,335,4305,824,342
Events in quadrant B16,209,8605,880,651
Events in quadrant C15,835,4315,697,893
Events in quadrant D18,875,7365,634,829

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01502470
B01536270
C01537680
D01604170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01190
C01190
D01190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014580
B014580
C014580
D014580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A716626900.962853%
B7166210751.500098%
C7166112911.801538%
D7166110501.465232%

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 87467 71664 1 1 0.00% 0.00%
B 87467 71662 16 16 0.02% 0.02%
C 87467 71662 13 13 0.01% 0.02%
D 87467 71661 94 94 0.11% 0.13%

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 15 192 300781 360.18 3825 3754 824.7
A 15 191 133231 157.01 3825 3754 824.7
A 13 254 105594 123.49 3825 3754 824.7
B 10 245 568647 790.7 3844 3755 714.4
B 15 201 151158 206.32 3844 3755 714.4
B 0 197 124997 169.71 3844 3755 714.4
C 3 233 1186434 1380.3 3687 3671 856.9
C 9 54 276445 318.33 3687 3671 856.9
C 0 239 94994 106.58 3687 3671 856.9
D 13 168 1473708 1714.24 3780 3655 857.6
D 1 52 1355756 1576.7 3780 3655 857.6
D 14 34 589767 683.47 3780 3655 857.6

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