ASTROSAT CZTI

Data Quality Report

Orbit 22406

Creation date: 2024-06-27T18:40:34.240968
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/AS1T03_156T01_9000003312_22406cztM0_level2.evt modeM0/AS1T03_156T01_9000003312_22406cztM0_level2_quad_clean.evt
Size (bytes)447,554,880101,416,320
Size426.8 MB 96.7 MB
Events in quadrant A3,131,161670,840
Events in quadrant B3,225,415687,965
Events in quadrant C3,259,783654,842
Events in quadrant D3,517,325625,611

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131922
B0134042
C0135232
D0145262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6192360.581395%
B6192480.775194%
C6192921.485788%
D6191530.856081%

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 7552 6193 0 0 0.00% 0.00%
B 7552 6193 1 1 0.01% 0.02%
C 7552 6193 8 8 0.11% 0.13%
D 7551 6192 30 30 0.40% 0.48%

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 3 1 10814 62.24 810 795 161.0
A 13 254 9190 52.15 810 795 161.0
A 0 226 7199 39.78 810 795 161.0
B 3 64 18886 121.22 815 797 149.2
B 12 111 17338 110.85 815 797 149.2
B 11 111 15224 96.68 815 797 149.2
C 14 238 124752 678.93 790 799 182.6
C 10 22 41964 225.47 790 799 182.6
C 0 10 12742 65.42 790 799 182.6
D 12 227 183313 967.85 787 765 188.6
D 7 223 181013 955.66 787 765 188.6
D 1 52 89186 468.8 787 765 188.6

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