ASTROSAT CZTI

Data Quality Report

Orbit 11664

Creation date: 2024-06-27T16:16:47.142187
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/AS1T01_207T01_9000001720_11664cztM0_level2.evt modeM0/AS1T01_207T01_9000001720_11664cztM0_level2_quad_clean.evt
Size (bytes)620,507,52097,035,840
Size591.8 MB 92.5 MB
Events in quadrant A7,697,017570,914
Events in quadrant B4,076,207649,620
Events in quadrant C3,117,323654,846
Events in quadrant D3,471,405619,576

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273542
B0161641
C0132451
D0143931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6355151423.823761%
B63553154.956727%
C6355520.818253%
D63551071.683714%

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 7541 6357 1001 1001 13.27% 15.75%
B 7541 6357 144 144 1.91% 2.27%
C 7541 6357 0 0 0.00% 0.00%
D 7541 6357 22 22 0.29% 0.35%

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 5 4469852 30907.95 718 704 144.6
A 1 162 176321 1214.54 718 704 144.6
A 1 178 98574 676.85 718 704 144.6
B 4 239 447973 3025.21 791 772 147.8
B 3 64 411012 2775.17 791 772 147.8
B 15 204 57758 385.5 791 772 147.8
C 13 61 5955 28.34 799 803 181.8
C 14 234 3021 12.2 799 803 181.8
C 3 202 2026 6.73 799 803 181.8
D 13 104 294063 1578.9 782 762 185.8
D 10 157 82054 437.61 782 762 185.8
D 9 68 41260 218.01 782 762 185.8

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