ASTROSAT CZTI

Data Quality Report

Orbit 05476

Creation date: 2024-06-27T14:55:40.288250
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/AS1T01_138T01_9000000698_05476cztM0_level2.evt modeM0/AS1T01_138T01_9000000698_05476cztM0_level2_quad_clean.evt
Size (bytes)600,770,88083,390,400
Size572.9 MB 79.5 MB
Events in quadrant A4,246,164481,904
Events in quadrant B4,517,106484,553
Events in quadrant C4,016,624489,020
Events in quadrant D4,824,560466,128

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188834
B0192213
C0183453
D0202623

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86972783.196505%
B86972843.265494%
C86972392.748074%
D86972753.162010%

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 9027 8701 18 18 0.20% 0.21%
B 9027 8701 0 0 0.00% 0.00%
C 9027 8701 1 1 0.01% 0.01%
D 9027 8701 66 66 0.73% 0.76%

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 170767 792.3 1029 1003 214.3
A 0 50 76848 353.97 1029 1003 214.3
A 0 247 19072 84.33 1029 1003 214.3
B 15 204 295096 1439.33 1047 1021 204.3
B 11 51 65309 314.65 1047 1021 204.3
B 4 81 31725 150.28 1047 1021 204.3
C 9 247 41312 170.81 1008 1012 235.9
C 8 128 18935 75.97 1008 1012 235.9
C 8 112 10022 38.19 1008 1012 235.9
D 2 33 225800 914.1 999 965 246.0
D 12 221 202450 819.17 999 965 246.0
D 8 195 202196 818.14 999 965 246.0

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