ASTROSAT CZTI

Data Quality Report

Orbit 20200212_A07_160T07_9000003494_level2

Creation date: 2020-02-13T14:29:50.037151
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/AS1A07_160T07_9000003494cztM0_level2_bc.evt modeM0/AS1A07_160T07_9000003494cztM0_level2_quad_clean.evt
Size (bytes)1,015,689,600393,819,840
Size968.6 MB 375.6 MB
Events in quadrant A5,967,8072,492,802
Events in quadrant B7,591,2242,514,146
Events in quadrant C5,846,9252,446,169
Events in quadrant D9,273,5282,383,335

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06240
B06240
C06240
D06240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0626290
B0680890
C0629080
D0744560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A304174741.558339%
B304178352.745175%
C304176512.140251%
D3041713844.550087%

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 33952 30412 0 0 0.00% 0.00%
B 33952 30410 32 32 0.09% 0.11%
C 33952 30411 0 0 0.00% 0.00%
D 33952 30411 113 113 0.33% 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 13 254 49361 140.93 1540 1506 339.6
A 12 194 10381 26.14 1540 1506 339.6
A 0 226 9786 24.38 1540 1506 339.6
B 3 64 994295 3296.89 1552 1512 301.1
B 0 229 218187 719.55 1552 1512 301.1
B 0 189 183536 604.48 1552 1512 301.1
C 7 247 95013 260.43 1496 1481 359.1
C 13 61 8506 19.56 1496 1481 359.1
C 14 238 4902 9.53 1496 1481 359.1
D 1 52 1740450 4902.7 1507 1449 354.7
D 12 233 587268 1651.58 1507 1449 354.7
D 9 85 492494 1384.38 1507 1449 354.7

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