ASTROSAT CZTI

Data Quality Report

Orbit 31189

Creation date: 2024-06-27T20:24:30.319320
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_058T02_9000004510_31189cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31189cztM0_level2_quad_clean.evt
Size (bytes)552,810,24078,995,520
Size527.2 MB 75.3 MB
Events in quadrant A2,898,762506,547
Events in quadrant B5,807,713504,488
Events in quadrant C2,993,126482,621
Events in quadrant D4,635,324478,463

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122461
B0215311
C0125541
D0186091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6013250.415766%
B601370911.791119%
C6013941.563280%
D6013530.881424%

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 7038 6014 0 0 0.00% 0.00%
B 7038 6014 420 420 5.97% 6.98%
C 7038 6014 5 5 0.07% 0.08%
D 7038 6014 10 10 0.14% 0.17%

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 13 254 11334 70.48 750 735 150.4
A 3 137 7644 45.95 750 735 150.4
A 0 226 6338 37.26 750 735 150.4
B 6 159 1553771 11396.28 699 682 136.3
B 4 80 1391986 10209.13 699 682 136.3
B 10 247 54324 393.62 699 682 136.3
C 14 238 124928 740.9 708 710 167.7
C 0 10 62839 370.57 708 710 167.7
C 14 254 16174 92.24 708 710 167.7
D 8 195 1859327 10580.4 718 701 175.7
D 2 234 21548 118.67 718 701 175.7
D 2 250 18633 102.08 718 701 175.7

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