ASTROSAT CZTI

Data Quality Report

Orbit 14985

Creation date: 2024-06-27T17:02:10.282908
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_056T01_9000002210_14985cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14985cztM0_level2_quad_clean.evt
Size (bytes)462,792,96088,539,840
Size441.4 MB 84.4 MB
Events in quadrant A3,452,414563,488
Events in quadrant B3,507,412563,915
Events in quadrant C3,245,504552,554
Events in quadrant D3,359,738538,767

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145512
B0145841
C0137041
D0145721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6629590.890029%
B66291071.614120%
C6629370.558154%
D66291081.629205%

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 6960 6631 0 0 0.00% 0.00%
B 6960 6631 16 16 0.23% 0.24%
C 6960 6631 0 0 0.00% 0.00%
D 6960 6631 52 52 0.75% 0.78%

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 184502 1131.04 795 778 162.4
A 1 162 97460 595.19 795 778 162.4
A 1 178 41222 248.98 795 778 162.4
B 10 245 128516 833.79 791 769 153.2
B 0 229 102881 666.47 791 769 153.2
B 15 201 39942 255.68 791 769 153.2
C 3 233 247355 1370.99 769 772 179.9
C 13 61 5599 26.84 769 772 179.9
C 14 234 2183 7.85 769 772 179.9
D 7 38 214364 1039.99 768 753 205.4
D 4 239 42060 201.11 768 753 205.4
D 2 234 28365 134.43 768 753 205.4

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