ASTROSAT CZTI

Data Quality Report

Orbit 20170225_G06_124T01_9000001054_level2

Creation date: 2017-09-23T06:33:28.248619
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/AS1G06_124T01_9000001054cztM0_level2.evt modeM0/AS1G06_124T01_9000001054cztM0_level2_quad_clean.evt
Size (bytes)6,838,470,7201,138,694,400
Size6.4 GB 1.1 GB
Events in quadrant A50,515,4786,803,994
Events in quadrant B46,690,5477,187,243
Events in quadrant C56,302,7447,061,438
Events in quadrant D47,100,3646,835,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02139940
B02014700
C02321560
D02070720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019620
B019620
C019620
D019620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01510
C01510
D01510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9631236743.814686%
B9631212161.262563%
C9631215551.614544%
D9631211361.179500%

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 110822 96328 2502 2502 2.26% 2.60%
B 110822 96331 50 50 0.05% 0.05%
C 110822 96331 604 604 0.55% 0.63%
D 110822 96330 348 348 0.31% 0.36%

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 0 128 6248968 2715.71 11444 11190 2296.9
A 13 248 130410 51.9 11444 11190 2296.9
A 0 226 108363 42.31 11444 11190 2296.9
B 4 81 393734 171.43 11746 11462 2230.0
B 0 214 284738 122.55 11746 11462 2230.0
B 12 111 237057 101.17 11746 11462 2230.0
C 9 68 11373165 4324.33 11397 11462 2627.4
C 1 16 339432 124.83 11397 11462 2627.4
C 13 61 87104 28.79 11397 11462 2627.4
D 13 104 937474 335.02 11414 11083 2765.2
D 2 14 868098 309.93 11414 11083 2765.2
D 2 152 840198 299.84 11414 11083 2765.2

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