ASTROSAT CZTI

Data Quality Report

Orbit 20190717_A05_069T02_9000003038_level2

Creation date: 2019-07-18T12:24:01.059872
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_069T02_9000003038cztM0_level2_bc.evt modeM0/AS1A05_069T02_9000003038cztM0_level2_quad_clean.evt
Size (bytes)1,297,114,560543,041,280
Size1.2 GB 517.9 MB
Events in quadrant A8,955,5763,480,498
Events in quadrant B8,737,7923,546,815
Events in quadrant C8,090,6123,348,854
Events in quadrant D10,716,7213,274,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0863120
B0850410
C0846290
D0919620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08300
B08300
C08300
D08300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A407494561.119046%
B407494731.160765%
C407495281.295737%
D407496721.649120%

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 46509 40750 2 2 0.00% 0.00%
B 46509 40751 0 0 0.00% 0.00%
C 46509 40750 0 0 0.00% 0.00%
D 46509 40750 50 50 0.11% 0.12%

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 529125 1118.98 2159 2121 471.0
A 14 111 47978 97.37 2159 2121 471.0
A 8 205 32520 64.54 2159 2121 471.0
B 0 230 106537 251.21 2183 2128 415.6
B 0 219 97330 229.06 2183 2128 415.6
B 0 189 68786 160.38 2183 2128 415.6
C 8 208 114220 232.31 2072 2055 482.8
C 13 61 11877 20.34 2072 2055 482.8
C 3 233 9598 15.62 2072 2055 482.8
D 1 52 1494527 3086.41 2113 2040 483.6
D 2 165 613480 1264.44 2113 2040 483.6
D 13 153 156056 318.5 2113 2040 483.6

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