ASTROSAT CZTI

Data Quality Report

Orbit 21753

Creation date: 2024-06-27T18:31:49.068950
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/AS1A07_005T01_9000003224_21753cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21753cztM0_level2_quad_clean.evt
Size (bytes)742,291,20068,322,240
Size707.9 MB 65.2 MB
Events in quadrant A3,090,250450,453
Events in quadrant B3,530,198456,651
Events in quadrant C3,136,761429,299
Events in quadrant D12,318,110313,306

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130261
B0144961
C0131521
D0406981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5990560.934891%
B59911101.836087%
C5991781.301953%
D5991404567.517944%

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 7205 5991 2 2 0.03% 0.03%
B 7206 5992 24 24 0.33% 0.40%
C 7206 5992 1 1 0.01% 0.02%
D 7206 5992 3303 3303 45.84% 55.12%

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 4 2 12108 71.26 797 784 158.9
A 13 254 10784 62.93 797 784 158.9
A 0 226 6796 37.83 797 784 158.9
B 3 64 117620 771.11 800 784 151.5
B 5 172 104682 685.72 800 784 151.5
B 0 230 38264 247.36 800 784 151.5
C 14 238 120385 671.64 762 770 178.1
C 10 22 32611 178.79 762 770 178.1
C 0 239 11698 61.36 762 770 178.1
D 7 238 9596995 71007.18 550 534 135.1
D 2 136 145509 1072.71 550 534 135.1
D 1 52 144964 1068.68 550 534 135.1

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