ASTROSAT CZTI

Data Quality Report

Orbit 31047

Creation date: 2024-06-27T20:22:42.787704
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/AS1A10_071T63_9000004486_31047cztM0_level2.evt modeM0/AS1A10_071T63_9000004486_31047cztM0_level2_quad_clean.evt
Size (bytes)579,916,800101,278,080
Size553.1 MB 96.6 MB
Events in quadrant A3,285,365681,404
Events in quadrant B5,573,295677,901
Events in quadrant C3,520,532643,720
Events in quadrant D4,757,915624,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138562
B0208882
C0145602
D0186234

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6306530.840469%
B63061752.775135%
C63061872.965430%
D6305841.332276%

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 7525 6305 0 0 0.00% 0.00%
B 7525 6305 14 14 0.19% 0.22%
C 7526 6306 19 19 0.25% 0.30%
D 7524 6304 25 25 0.33% 0.40%

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 13 254 12343 68.28 850 834 168.6
A 3 137 7990 42.45 850 834 168.6
A 0 226 7443 39.21 850 834 168.6
B 6 159 1799477 11395.78 837 817 157.8
B 0 155 139955 881.53 837 817 157.8
B 4 80 120291 756.95 837 817 157.8
C 0 10 153109 808.26 806 813 188.4
C 14 238 129765 684.37 806 813 188.4
C 3 233 42107 219.15 806 813 188.4
D 8 195 1417990 7367.21 818 798 192.4
D 1 52 75416 387.9 818 798 192.4
D 2 250 54665 280.03 818 798 192.4

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