ASTROSAT CZTI

Data Quality Report

Orbit 20180613_A04_148T01_9000002162_level2

Creation date: 2018-07-01T01:16:05.525729
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/AS1A04_148T01_9000002162cztM0_level2_bc.evt modeM0/AS1A04_148T01_9000002162cztM0_level2_quad_clean.evt
Size (bytes)647,902,080204,324,480
Size617.9 MB 194.9 MB
Events in quadrant A5,974,1731,257,231
Events in quadrant B3,547,0621,352,206
Events in quadrant C5,020,9731,331,098
Events in quadrant D4,135,9291,296,275

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0423290
B0309920
C0369950
D0328350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1377912429.013717%
B137792261.640177%
C137792061.495029%
D137794393.186008%

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 17460 13777 16 16 0.09% 0.12%
B 17460 13777 2 2 0.01% 0.01%
C 17460 13778 0 0 0.00% 0.00%
D 17460 13777 58 58 0.33% 0.42%

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 0 253 2313483 14023.33 769 758 164.9
A 0 23 257371 1555.99 769 758 164.9
A 8 15 154841 934.29 769 758 164.9
B 0 189 117027 761.28 814 797 152.7
B 0 219 48563 312.86 814 797 152.7
B 0 190 39343 252.47 814 797 152.7
C 3 233 1894913 11032.44 789 783 171.7
C 0 207 21394 120.05 789 783 171.7
C 14 225 5484 27.38 789 783 171.7
D 15 0 410257 2040.89 792 771 200.6
D 10 199 267629 1330.03 792 771 200.6
D 12 110 78379 386.8 792 771 200.6

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