ASTROSAT CZTI

Data Quality Report

Orbit 16516

Creation date: 2024-06-27T17:23:49.250751
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_174T01_9000002440_16516cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16516cztM0_level2_quad_clean.evt
Size (bytes)521,161,92093,484,800
Size497.0 MB 89.2 MB
Events in quadrant A3,372,673603,678
Events in quadrant B3,271,537628,236
Events in quadrant C5,633,198568,945
Events in quadrant D3,065,341577,106

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141363
B0137832
C0210782
D0135842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6493400.616048%
B6493410.631449%
C649373911.381488%
D6493160.246419%

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 7799 6495 19 19 0.24% 0.29%
B 7799 6495 2 2 0.03% 0.03%
C 7799 6494 548 548 7.03% 8.44%
D 7799 6495 6 6 0.08% 0.09%

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 15 174 269112 1679.66 799 785 159.8
A 15 223 19639 118.02 799 785 159.8
A 15 239 8066 45.58 799 785 159.8
B 15 35 42333 271.82 812 794 152.8
B 12 111 18021 112.73 812 794 152.8
B 4 48 15549 96.55 812 794 152.8
C 3 233 2577289 14611.98 753 759 176.3
C 14 238 114849 647.02 753 759 176.3
C 7 247 5466 26.69 753 759 176.3
D 10 70 78745 407.81 780 757 191.2
D 5 222 23104 116.86 780 757 191.2
D 2 234 22533 113.87 780 757 191.2

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