ASTROSAT CZTI

Data Quality Report

Orbit 30021

Creation date: 2024-06-27T20:09:58.741758
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_071T03_9000004314_30021cztM0_level2.evt modeM0/AS1A10_071T03_9000004314_30021cztM0_level2_quad_clean.evt
Size (bytes)563,149,44067,489,920
Size537.1 MB 64.4 MB
Events in quadrant A3,723,655407,921
Events in quadrant B5,502,448406,230
Events in quadrant C3,718,793384,639
Events in quadrant D3,661,392382,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148982
B0205192
C0148562
D0145272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6627911.373170%
B66261622.444914%
C6626971.463930%
D6626731.101720%

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 7912 6628 2 2 0.03% 0.03%
B 7911 6627 4 4 0.05% 0.06%
C 7911 6627 12 12 0.15% 0.18%
D 7911 6627 27 27 0.34% 0.41%

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 8 192 22956 116.14 955 940 189.6
A 5 203 16496 82.06 955 940 189.6
A 13 254 11021 53.18 955 940 189.6
B 6 159 1784465 10055.05 939 920 177.4
B 10 247 27101 147.6 939 920 177.4
B 12 111 21220 114.44 939 920 177.4
C 14 238 148304 716.95 890 900 205.6
C 3 233 53295 254.84 890 900 205.6
C 0 10 35194 166.8 890 900 205.6
D 8 195 145548 692.05 894 876 209.0
D 7 238 85885 406.65 894 876 209.0
D 10 70 24118 111.18 894 876 209.0

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