ASTROSAT CZTI

Data Quality Report

Orbit 06657

Creation date: 2024-06-27T15:09:57.076791
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/AS1A02_103T01_9000000904_06657cztM0_level2.evt modeM0/AS1A02_103T01_9000000904_06657cztM0_level2_quad_clean.evt
Size (bytes)553,389,12095,800,320
Size527.8 MB 91.4 MB
Events in quadrant A3,717,375610,725
Events in quadrant B3,547,934636,859
Events in quadrant C4,189,058614,089
Events in quadrant D4,842,973564,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153963
B0149562
C0169942
D0190492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68161722.523474%
B6816901.320423%
C68161762.582160%
D68165548.127934%

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 9371 6818 84 84 0.90% 1.23%
B 9371 6818 9 9 0.10% 0.13%
C 9371 6818 123 123 1.31% 1.80%
D 9371 6818 412 412 4.40% 6.04%

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 15 234 232904 1366.75 839 823 169.8
A 8 15 187089 1096.94 839 823 169.8
A 14 111 51898 300.79 839 823 169.8
B 0 228 59607 362.54 859 841 162.1
B 4 81 41860 253.06 859 841 162.1
B 4 48 30847 185.11 859 841 162.1
C 9 247 959034 5059.37 820 825 189.4
C 4 254 26708 136.66 820 825 189.4
C 13 61 6399 29.43 820 825 189.4
D 2 33 1443640 7453.33 793 769 193.6
D 2 152 107591 551.8 793 769 193.6
D 2 14 86203 441.32 793 769 193.6

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