ASTROSAT CZTI

Data Quality Report

Orbit 37220

Creation date: 2024-06-27T21:37:05.124914
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/AS1A11_079T01_9000005284_37220cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37220cztM0_level2_quad_clean.evt
Size (bytes)446,307,84080,354,880
Size425.6 MB 76.6 MB
Events in quadrant A2,739,722527,233
Events in quadrant B2,732,698524,748
Events in quadrant C3,082,003517,324
Events in quadrant D4,592,717483,108

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115482
B0116421
C0124731
D0173971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5442110.202132%
B5442370.679897%
C5442540.992282%
D54423837.037854%

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 7114 5443 5 5 0.07% 0.09%
B 7114 5443 29 29 0.41% 0.53%
C 7114 5443 39 39 0.55% 0.72%
D 7114 5443 385 385 5.41% 7.07%

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 10 83 242348 1875.96 634 620 128.9
A 13 248 24877 188.25 634 620 128.9
A 15 222 11426 83.86 634 620 128.9
B 5 172 162789 1340.45 626 612 121.0
B 0 213 48591 396.56 626 612 121.0
B 0 155 23995 193.27 626 612 121.0
C 15 214 233986 1608.85 615 621 145.1
C 10 49 198980 1367.52 615 621 145.1
C 14 254 94741 648.88 615 621 145.1
D 2 249 756605 5092.87 605 589 148.4
D 10 253 645486 4344.32 605 589 148.4
D 12 217 478643 3220.39 605 589 148.4

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