ASTROSAT CZTI

Data Quality Report

Orbit 17346

Creation date: 2024-06-27T17:35:18.623270
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_165T12_9000002562_17346cztM0_level2.evt modeM0/AS1A05_165T12_9000002562_17346cztM0_level2_quad_clean.evt
Size (bytes)390,646,08074,903,040
Size372.5 MB 71.4 MB
Events in quadrant A2,675,875473,427
Events in quadrant B2,760,706479,697
Events in quadrant C2,732,695454,777
Events in quadrant D3,256,985445,155

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120451
B0121981
C0120591
D0139531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5944160.269179%
B5944350.588829%
C5944470.790713%
D5944440.740242%

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 6344 5945 1 1 0.02% 0.02%
B 6344 5945 1 1 0.02% 0.02%
C 6344 5945 0 0 0.00% 0.00%
D 6344 5945 28 28 0.44% 0.47%

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 0 226 6187 38.81 695 679 141.9
A 3 137 5406 33.31 695 679 141.9
A 12 194 5033 30.68 695 679 141.9
B 0 230 27491 202.07 693 675 132.7
B 12 111 16394 118.45 693 675 132.7
B 11 111 14148 101.53 693 675 132.7
C 14 238 103777 654.68 669 673 157.5
C 3 233 18861 115.49 669 673 157.5
C 13 61 4612 25.01 669 673 157.5
D 5 222 264251 1607.55 673 654 164.0
D 13 189 193644 1176.95 673 654 164.0
D 1 52 117390 711.92 673 654 164.0

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