ASTROSAT CZTI

Data Quality Report

Orbit 18378

Creation date: 2024-06-27T17:49:02.854935
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/AS1A06_006T01_9000002724_18378cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18378cztM0_level2_quad_clean.evt
Size (bytes)481,579,20089,778,240
Size459.3 MB 85.6 MB
Events in quadrant A3,185,719575,344
Events in quadrant B3,424,137583,584
Events in quadrant C3,185,625567,743
Events in quadrant D4,347,047537,795

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135902
B0143032
C0136152
D0173067

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6514190.291679%
B6514530.813632%
C6514610.936445%
D65132053.147551%

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 7609 6515 3 3 0.04% 0.05%
B 7609 6515 25 25 0.33% 0.38%
C 7609 6515 11 11 0.14% 0.17%
D 7608 6514 188 188 2.47% 2.89%

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 8 34 71938 440.29 792 775 161.6
A 4 2 39081 237.0 792 775 161.6
A 15 174 17347 102.53 792 775 161.6
B 0 189 56181 365.48 796 777 151.6
B 15 222 56180 365.47 796 777 151.6
B 0 244 55107 358.39 796 777 151.6
C 14 238 117713 655.96 759 765 178.3
C 0 207 103274 574.97 759 765 178.3
C 3 233 5831 28.41 759 765 178.3
D 1 52 1087288 5851.53 756 733 185.7
D 7 38 202813 1088.28 756 733 185.7
D 2 33 79637 424.93 756 733 185.7

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