ASTROSAT CZTI

Data Quality Report

Orbit 04050

Creation date: 2024-06-27T14:36:46.264205
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_241T04_9000000518_04050cztM0_level2.evt modeM0/AS1G05_241T04_9000000518_04050cztM0_level2_quad_clean.evt
Size (bytes)411,494,40051,675,840
Size392.4 MB 49.3 MB
Events in quadrant A2,992,812288,948
Events in quadrant B3,424,573288,639
Events in quadrant C2,795,386283,360
Events in quadrant D2,832,386275,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129401
B0141130
C0125440
D0128300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61391071.742955%
B61391061.726666%
C6139480.781886%
D6139510.830754%

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 7269 6139 30 30 0.41% 0.49%
B 7269 6139 26 26 0.36% 0.42%
C 7269 6139 1 1 0.01% 0.02%
D 7269 6139 1 1 0.01% 0.02%

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 92643 611.47 734 719 150.3
A 8 15 31814 206.84 734 719 150.3
A 0 118 27274 176.64 734 719 150.3
B 15 204 180293 1262.8 740 722 142.2
B 4 81 154666 1082.58 740 722 142.2
B 14 167 115543 807.46 740 722 142.2
C 9 144 21368 125.2 708 711 165.0
C 12 4 5944 31.72 708 711 165.0
C 13 61 5912 31.52 708 711 165.0
D 2 232 80391 464.33 708 686 171.7
D 13 239 26692 151.5 708 686 171.7
D 10 34 14593 81.02 708 686 171.7

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