ASTROSAT CZTI

Data Quality Report

Orbit 16748

Creation date: 2024-06-27T17:27:10.065983
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/AS1A05_202T01_9000002484_16748cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16748cztM0_level2_quad_clean.evt
Size (bytes)481,821,120115,568,640
Size459.5 MB 110.2 MB
Events in quadrant A2,847,479810,326
Events in quadrant B3,040,603816,484
Events in quadrant C2,993,585771,410
Events in quadrant D5,318,677698,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120702
B0125851
C0125611
D0197381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5763891.544335%
B5763741.284053%
C57631091.891376%
D576385414.818671%

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 7054 5765 11 11 0.16% 0.19%
B 7054 5765 3 3 0.04% 0.05%
C 7054 5765 0 0 0.00% 0.00%
D 7054 5765 586 586 8.31% 10.16%

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 64294 440.45 724 711 144.4
A 0 226 6442 39.7 724 711 144.4
A 12 194 5531 33.39 724 711 144.4
B 15 35 67619 496.89 726 709 134.7
B 3 209 46707 341.59 726 709 134.7
B 5 236 28419 205.78 726 709 134.7
C 3 233 205168 1304.17 683 688 156.8
C 14 238 110570 700.83 683 688 156.8
C 0 207 13858 84.0 683 688 156.8
D 1 52 2458701 15773.78 648 629 155.8
D 2 16 164408 1050.99 648 629 155.8
D 10 70 63474 403.28 648 629 155.8

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