ASTROSAT CZTI

Data Quality Report

Orbit 29958

Creation date: 2024-06-27T20:09:11.759793
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/AS1A10_058T01_9000004298_29958cztM0_level2.evt modeM0/AS1A10_058T01_9000004298_29958cztM0_level2_quad_clean.evt
Size (bytes)1,023,721,920178,542,720
Size976.3 MB 170.3 MB
Events in quadrant A5,885,9841,167,932
Events in quadrant B9,572,2181,160,238
Events in quadrant C8,053,4681,104,779
Events in quadrant D6,645,3231,107,828

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255462
B0377982
C0322772
D0277552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12545610.486250%
B125461501.195600%
C125463232.574526%
D12545830.661618%

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 14345 12548 1 1 0.01% 0.01%
B 14346 12549 3 3 0.02% 0.02%
C 14346 12549 45 45 0.31% 0.36%
D 14345 12548 37 37 0.26% 0.29%

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 8 192 40604 130.33 1510 1480 300.2
A 13 254 24070 75.25 1510 1480 300.2
A 12 96 16146 48.85 1510 1480 300.2
B 6 159 3629657 12815.11 1494 1458 283.1
B 12 111 35600 120.59 1494 1458 283.1
B 11 111 32808 110.73 1494 1458 283.1
C 3 233 2132557 6263.27 1441 1448 340.3
C 14 238 234795 685.8 1441 1448 340.3
C 2 114 28946 80.82 1441 1448 340.3
D 8 195 709034 2029.04 1467 1427 348.7
D 13 104 141759 402.4 1467 1427 348.7
D 2 234 56589 158.17 1467 1427 348.7

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