ASTROSAT CZTI

Data Quality Report

Orbit 20180720_C03_015T04_9000002240_level2

Creation date: 2018-07-21T17:26:30.996023
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/AS1C03_015T04_9000002240cztM0_level2_bc.evt modeM0/AS1C03_015T04_9000002240cztM0_level2_quad_clean.evt
Size (bytes)298,964,160114,897,600
Size285.1 MB 109.6 MB
Events in quadrant A1,442,207767,492
Events in quadrant B3,323,583725,747
Events in quadrant C2,008,331781,950
Events in quadrant D1,826,838748,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137260
B0215820
C0154360
D0149150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6538691.055369%
B6538102815.723463%
C6538671.024778%
D65381362.080147%

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 7699 6538 0 0 0.00% 0.00%
B 7699 6540 92 92 1.19% 1.41%
C 7699 6538 0 0 0.00% 0.00%
D 7698 6538 27 27 0.35% 0.41%

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 12 189 99464 1282.17 344 338 77.3
A 3 1 6609 81.11 344 338 77.3
A 13 248 6099 74.52 344 338 77.3
B 3 112 1791402 28244.96 326 319 63.4
B 3 64 107839 1695.57 326 319 63.4
B 0 189 44420 695.46 326 319 63.4
C 3 233 650166 8168.07 344 339 79.6
C 0 207 5859 69.38 344 339 79.6
C 7 247 2370 25.52 344 339 79.6
D 2 33 149966 1836.65 344 332 81.5
D 4 95 116165 1421.77 344 332 81.5
D 7 38 86807 1061.42 344 332 81.5

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