ASTROSAT CZTI

Data Quality Report

Orbit 20190502_A05_221T01_9000002888_level2

Creation date: 2019-05-14T11:57:18.271597
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_221T01_9000002888cztM0_level2_bc.evt modeM0/AS1A05_221T01_9000002888cztM0_level2_quad_clean.evt
Size (bytes)5,751,815,0401,803,009,600
Size5.4 GB 1.7 GB
Events in quadrant A31,936,03811,401,083
Events in quadrant B33,442,40011,512,035
Events in quadrant C31,104,66311,153,732
Events in quadrant D67,865,35910,633,523

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029420
B029420
C029420
D029420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02250
B02260
C02260
D02260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03042600
B03117430
C03063780
D04413550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14467213950.964250%
B14467220121.390732%
C14467221851.510313%
D144672121888.424574%

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 166811 144658 20 20 0.01% 0.01%
B 166811 144656 36 36 0.02% 0.02%
C 166811 144662 15 15 0.01% 0.01%
D 166811 144654 1094 1094 0.66% 0.76%

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 3 1 538763 314.61 7884 7758 1687.8
A 5 16 335723 194.31 7884 7758 1687.8
A 11 29 320544 185.32 7884 7758 1687.8
B 7 220 814134 548.84 7898 7720 1469.3
B 0 198 543624 364.73 7898 7720 1469.3
B 0 197 428061 286.08 7898 7720 1469.3
C 9 221 1256574 704.2 7582 7555 1773.7
C 0 207 434602 240.77 7582 7555 1773.7
C 3 233 264807 145.04 7582 7555 1773.7
D 7 238 30293175 17449.43 7542 7288 1735.6
D 1 52 4448980 2559.11 7542 7288 1735.6
D 12 218 2301729 1321.96 7542 7288 1735.6

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