ASTROSAT CZTI

Data Quality Report

Orbit 24897

Creation date: 2024-06-27T19:11:10.821873
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/AS1A08_003T13_9000003646_24897cztM0_level2.evt modeM0/AS1A08_003T13_9000003646_24897cztM0_level2_quad_clean.evt
Size (bytes)461,468,16073,903,680
Size440.1 MB 70.5 MB
Events in quadrant A3,257,735466,615
Events in quadrant B3,317,034480,727
Events in quadrant C3,372,465440,971
Events in quadrant D3,617,634426,863

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130242
B0132222
C0134262
D0145432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6055590.974401%
B6055741.222130%
C60551001.651528%
D6055751.238646%

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 7415 6056 0 0 0.00% 0.00%
B 7415 6056 0 0 0.00% 0.00%
C 7415 6056 12 12 0.16% 0.20%
D 7415 6056 46 46 0.62% 0.76%

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 4 2 10808 60.26 842 830 165.6
A 13 254 9317 51.26 842 830 165.6
A 3 137 7222 38.6 842 830 165.6
B 12 111 18623 112.33 840 821 158.5
B 11 111 16655 99.91 840 821 158.5
B 14 111 15935 95.37 840 821 158.5
C 14 238 128440 692.85 792 800 184.2
C 7 247 64985 348.41 792 800 184.2
C 2 16 52080 278.36 792 800 184.2
D 8 195 306199 1582.2 795 774 193.0
D 7 238 178848 922.48 795 774 193.0
D 1 52 131882 679.18 795 774 193.0

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