ASTROSAT CZTI

Data Quality Report

Orbit 12667

Creation date: 2024-06-27T16:30:47.650755
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/AS1A04_174T01_9000001876_12667cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12667cztM0_level2_quad_clean.evt
Size (bytes)508,936,32087,851,520
Size485.4 MB 83.8 MB
Events in quadrant A3,197,500583,032
Events in quadrant B5,062,700505,041
Events in quadrant C2,893,842581,977
Events in quadrant D3,834,861553,983

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136303
B0192341
C0127601
D0156661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244180.288277%
B624486613.869315%
C6244100.160154%
D62441101.761691%

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 7262 6247 2 2 0.03% 0.03%
B 7262 6246 625 625 8.61% 10.01%
C 7262 6247 0 0 0.00% 0.00%
D 7262 6246 211 211 2.91% 3.38%

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 5 112 225375 1465.32 755 740 153.3
A 12 189 38570 246.77 755 740 153.3
A 8 15 19829 124.52 755 740 153.3
B 4 239 2105304 16044.79 694 679 131.2
B 11 51 71698 541.42 694 679 131.2
B 3 64 53886 405.63 694 679 131.2
C 15 208 6258 32.09 739 747 171.7
C 13 61 5331 26.7 739 747 171.7
C 14 234 4608 22.49 739 747 171.7
D 1 52 885810 5001.47 725 711 177.0
D 13 104 75251 421.21 725 711 177.0
D 13 249 70143 392.34 725 711 177.0

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