ASTROSAT CZTI

Data Quality Report

Orbit 04459

Creation date: 2024-06-27T14:42:19.962898
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/AS1G05_253T01_9000000560_04459cztM0_level2.evt modeM0/AS1G05_253T01_9000000560_04459cztM0_level2_quad_clean.evt
Size (bytes)401,872,32061,496,640
Size383.3 MB 58.6 MB
Events in quadrant A2,959,312360,352
Events in quadrant B2,935,027362,089
Events in quadrant C2,823,776367,199
Events in quadrant D3,041,521350,304

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128412
B0125601
C0124911
D0132653

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6044991.637988%
B6044891.472535%
C6044761.257445%
D60431312.167797%

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 7199 6045 16 16 0.22% 0.26%
B 7199 6045 0 0 0.00% 0.00%
C 7199 6045 0 0 0.00% 0.00%
D 7199 6045 59 59 0.82% 0.98%

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 0 50 151061 1009.53 722 706 148.9
A 0 13 24358 158.81 722 706 148.9
A 0 226 7744 47.26 722 706 148.9
B 4 48 34661 244.22 729 711 139.0
B 15 204 20772 144.31 729 711 139.0
B 4 170 19538 135.43 729 711 139.0
C 14 48 19528 114.9 709 711 163.8
C 9 16 12326 70.92 709 711 163.8
C 9 54 11415 65.36 709 711 163.8
D 13 235 192457 1153.88 700 680 166.2
D 8 112 42413 251.1 700 680 166.2
D 2 136 41025 242.75 700 680 166.2

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