ASTROSAT CZTI

Data Quality Report

Orbit 18815

Creation date: 2024-06-27T17:55:11.792871
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/AS1A05_173T01_9000002812_18815cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18815cztM0_level2_quad_clean.evt
Size (bytes)431,326,08089,251,200
Size411.3 MB 85.1 MB
Events in quadrant A3,030,425582,640
Events in quadrant B3,236,099593,370
Events in quadrant C3,186,182558,928
Events in quadrant D3,200,862547,314

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124981
B0131671
C0130431
D0133401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6021240.398605%
B6022500.830289%
C6022500.830289%
D6022470.780472%

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 7281 6022 0 0 0.00% 0.00%
B 7282 6023 3 3 0.04% 0.05%
C 7282 6023 1 1 0.01% 0.02%
D 7282 6023 37 37 0.51% 0.61%

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 9586 55.87 783 770 157.8
A 0 226 6842 38.48 783 770 157.8
A 11 29 6772 38.04 783 770 157.8
B 6 36 90349 606.52 778 762 147.7
B 10 247 17740 114.94 778 762 147.7
B 4 216 17129 110.81 778 762 147.7
C 3 233 168980 972.78 743 749 172.9
C 14 238 117611 675.75 743 749 172.9
C 13 61 5423 27.03 743 749 172.9
D 12 110 270986 1465.68 754 732 184.4
D 7 38 70136 376.4 754 732 184.4
D 2 234 24624 129.57 754 732 184.4

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