ASTROSAT CZTI

Data Quality Report

Orbit 21831

Creation date: 2024-06-27T18:32:47.601236
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_004T01_9000003230_21831cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21831cztM0_level2_quad_clean.evt
Size (bytes)500,656,32076,204,800
Size477.5 MB 72.7 MB
Events in quadrant A3,445,304454,550
Events in quadrant B3,705,244464,213
Events in quadrant C3,486,171450,920
Events in quadrant D4,034,238434,049

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149882
B0155382
C0149912
D0167742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72291482.047309%
B72301822.517289%
C72301862.572614%
D72291592.199474%

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 7649 7230 0 0 0.00% 0.00%
B 7650 7231 10 10 0.13% 0.14%
C 7650 7230 0 0 0.00% 0.00%
D 7649 7229 19 19 0.25% 0.26%

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 13 254 13605 70.41 891 871 180.9
A 0 226 7544 36.9 891 871 180.9
A 3 137 7453 36.39 891 871 180.9
B 3 64 78561 451.01 894 873 172.3
B 0 190 32559 183.95 894 873 172.3
B 0 230 28705 161.58 894 873 172.3
C 14 238 132132 647.88 858 863 202.6
C 13 61 6127 25.98 858 863 202.6
C 3 248 4746 19.16 858 863 202.6
D 1 52 568160 2678.01 865 841 211.8
D 7 38 96298 450.6 865 841 211.8
D 2 234 34243 157.67 865 841 211.8

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