ASTROSAT CZTI

Data Quality Report

Orbit 13142

Creation date: 2024-06-27T16:36:52.346267
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/AS1T02_011T01_9000001940_13142cztM0_level2.evt modeM0/AS1T02_011T01_9000001940_13142cztM0_level2_quad_clean.evt
Size (bytes)488,361,600108,077,760
Size465.7 MB 103.1 MB
Events in quadrant A3,135,700722,498
Events in quadrant B4,766,951701,864
Events in quadrant C2,970,305737,609
Events in quadrant D3,501,269683,557

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131373
B0181972
C0126482
D0144142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6120240.392157%
B612074012.091503%
C612040.065359%
D6120791.290850%

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 7476 6122 4 4 0.05% 0.07%
B 7476 6122 365 365 4.88% 5.96%
C 7476 6122 0 0 0.00% 0.00%
D 7476 6122 59 59 0.79% 0.96%

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 12 189 78919 509.61 766 751 153.4
A 4 2 35842 228.77 766 751 153.4
A 1 162 19500 122.23 766 751 153.4
B 4 239 1543882 11462.96 725 709 134.6
B 0 85 148860 1100.49 725 709 134.6
B 0 189 78999 581.55 725 709 134.6
C 13 61 5484 27.08 761 767 174.2
C 8 222 2771 11.5 761 767 174.2
C 0 207 2246 8.49 761 767 174.2
D 1 52 608111 3427.68 743 726 177.2
D 8 195 28703 157.88 743 726 177.2
D 2 234 23425 128.1 743 726 177.2

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