ASTROSAT CZTI

Data Quality Report

Orbit 20171108_A04_054T02_9000001674_level2

Creation date: 2018-01-08T20:56:54.149678
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_054T02_9000001674cztM0_level2_bc.evt modeM0/AS1A04_054T02_9000001674cztM0_level2_quad_clean.evt
Size (bytes)291,862,08093,254,400
Size278.3 MB 88.9 MB
Events in quadrant A1,749,107576,861
Events in quadrant B2,611,897568,710
Events in quadrant C1,648,914553,639
Events in quadrant D2,248,915541,163

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178740
B0212520
C0174870
D0191500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84021221.452035%
B84023964.713164%
C8402570.678410%
D84021371.630564%

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 10308 8404 1 1 0.01% 0.01%
B 10308 8403 4 4 0.04% 0.05%
C 10308 8403 0 0 0.00% 0.00%
D 10308 8403 31 31 0.30% 0.37%

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 9 143 32444 324.74 434 424 98.6
A 1 162 22244 221.29 434 424 98.6
A 8 5 11329 110.59 434 424 98.6
B 4 239 695575 8137.7 432 420 85.4
B 3 189 61605 716.25 432 420 85.4
B 10 245 60095 698.57 432 420 85.4
C 8 128 2931 26.97 420 412 93.4
C 13 61 2482 22.17 420 412 93.4
C 8 112 1714 13.94 420 412 93.4
D 1 52 263700 2666.45 421 405 98.7
D 10 253 121909 1230.5 421 405 98.7
D 13 152 67887 683.41 421 405 98.7

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