ASTROSAT CZTI

Data Quality Report

Orbit 15851

Creation date: 2024-06-27T17:14:21.264015
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/AS1A04_143T01_9000002344_15851cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15851cztM0_level2_quad_clean.evt
Size (bytes)673,896,96095,333,760
Size642.7 MB 90.9 MB
Events in quadrant A4,199,388605,986
Events in quadrant B3,465,245652,006
Events in quadrant C3,424,782617,667
Events in quadrant D8,849,930527,508

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170333
B0147602
C0145392
D0309622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69393575.144834%
B6939831.196138%
C6939761.095259%
D6939203629.341404%

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 8044 6940 297 297 3.69% 4.28%
B 8045 6941 1 1 0.01% 0.01%
C 8045 6941 0 0 0.00% 0.00%
D 8045 6940 1780 1780 22.13% 25.65%

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 15 239 943988 5553.06 843 822 169.8
A 0 226 7498 39.31 843 822 169.8
A 13 210 6530 33.61 843 822 169.8
B 4 173 57795 340.13 867 847 167.4
B 12 111 19364 110.59 867 847 167.4
B 11 111 16278 92.16 867 847 167.4
C 14 238 127578 646.87 834 842 195.9
C 3 233 23711 116.72 834 842 195.9
C 7 247 20197 98.79 834 842 195.9
D 1 52 6085214 34563.88 720 701 176.0
D 7 223 26094 144.25 720 701 176.0
D 2 234 22778 125.41 720 701 176.0

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