ASTROSAT CZTI

Data Quality Report

Orbit 35828

Creation date: 2022-05-19T15:11:18.455754
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_071T19_9000005144_35828cztM0_level2.evt modeM0/AS1A10_071T19_9000005144_35828cztM0_level2_quad_clean.evt
Size (bytes)458,801,28091,267,200
Size437.5 MB 87.0 MB
Events in quadrant A3,040,579621,342
Events in quadrant B2,813,633621,143
Events in quadrant C2,853,375603,062
Events in quadrant D4,840,032559,350

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121723
B0114102
C0113252
D0178862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A512960.116982%
B5129370.721388%
C5129641.247807%
D51304168.109162%

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 7252 5130 1 1 0.01% 0.02%
B 7252 5129 22 22 0.30% 0.43%
C 7252 5130 49 49 0.68% 0.96%
D 7252 5130 414 414 5.71% 8.07%

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 15 169 376484 2895.51 645 632 129.8
A 10 83 156902 1203.88 645 632 129.8
A 13 6 12691 92.9 645 632 129.8
B 5 172 134738 1113.08 629 614 120.5
B 5 255 66221 544.47 629 614 120.5
B 4 81 43312 354.35 629 614 120.5
C 15 214 217494 1505.72 617 624 144.0
C 0 10 190955 1321.46 617 624 144.0
C 8 222 22420 151.33 617 624 144.0
D 2 250 941792 6239.05 610 592 150.9
D 14 52 602214 3988.05 610 592 150.9
D 7 223 260507 1722.93 610 592 150.9

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