ASTROSAT CZTI

Data Quality Report

Orbit 20190105_A05_084T06_9000002626_level2

Creation date: 2019-01-07T12:57:24.121537
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_084T06_9000002626cztM0_level2_bc.evt modeM0/AS1A05_084T06_9000002626cztM0_level2_quad_clean.evt
Size (bytes)299,249,280105,264,000
Size285.4 MB 100.4 MB
Events in quadrant A2,380,883648,640
Events in quadrant B2,146,619652,645
Events in quadrant C1,931,271625,918
Events in quadrant D1,962,196615,307

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215620
B0200210
C0192490
D0193050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92972412.592234%
B9297920.989567%
C9297931.000323%
D9297400.430246%

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 11122 9297 14 14 0.13% 0.15%
B 11122 9297 2 2 0.02% 0.02%
C 11122 9297 0 0 0.00% 0.00%
D 11122 9297 6 6 0.05% 0.06%

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 585688 5553.85 467 457 105.4
A 0 226 3046 24.57 467 457 105.4
A 12 194 2969 23.84 467 457 105.4
B 0 229 162051 1728.27 477 465 93.5
B 10 245 88576 942.41 477 465 93.5
B 0 189 37242 393.36 477 465 93.5
C 3 233 124830 1153.76 454 448 107.8
C 5 218 42721 392.12 454 448 107.8
C 1 16 6354 54.78 454 448 107.8
D 7 238 43939 388.67 462 446 111.9
D 2 234 35040 309.15 462 446 111.9
D 2 33 31315 275.86 462 446 111.9

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