ASTROSAT CZTI

Data Quality Report

Orbit 20196

Creation date: 2024-06-27T18:12:19.405118
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/AS1C04_001T01_9000002994_20196cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20196cztM0_level2_quad_clean.evt
Size (bytes)457,456,320125,271,360
Size436.3 MB 119.5 MB
Events in quadrant A3,158,309851,324
Events in quadrant B3,400,319845,536
Events in quadrant C3,143,473821,465
Events in quadrant D3,699,093811,236

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138421
B0144701
C0136291
D0154981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6670310.464768%
B6671560.839454%
C6671721.079298%
D6671951.424074%

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 7075 6671 12 12 0.17% 0.18%
B 7076 6672 14 14 0.20% 0.21%
C 7076 6672 0 0 0.00% 0.00%
D 7076 6672 48 48 0.68% 0.72%

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 4 2 46813 289.04 789 771 159.3
A 14 111 34771 213.44 789 771 159.3
A 10 253 26359 160.63 789 771 159.3
B 0 197 122022 817.99 781 761 148.2
B 7 220 96342 644.76 781 761 148.2
B 0 190 28331 185.98 781 761 148.2
C 14 238 117863 662.84 756 761 176.7
C 3 233 63374 354.41 756 761 176.7
C 1 16 13801 73.81 756 761 176.7
D 7 38 244917 1310.92 769 746 186.3
D 11 176 157849 843.47 769 746 186.3
D 2 184 74717 397.14 769 746 186.3

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