ASTROSAT CZTI

Data Quality Report

Orbit 09141

Creation date: 2024-06-27T15:41:50.506447
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/AS1A03_033T01_9000001276_09141cztM0_level2.evt modeM0/AS1A03_033T01_9000001276_09141cztM0_level2_quad_clean.evt
Size (bytes)768,646,080120,983,040
Size733.0 MB 115.4 MB
Events in quadrant A5,988,843759,903
Events in quadrant B4,711,576761,171
Events in quadrant C4,340,410750,434
Events in quadrant D7,570,401709,058

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02429316
B0206048
C0199862
D0294712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A98541641.664299%
B98561061.075487%
C9859710.720154%
D9859106210.771884%

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 11244 9859 25 25 0.22% 0.25%
B 11244 9859 5 5 0.04% 0.05%
C 11244 9859 0 0 0.00% 0.00%
D 11244 9859 1008 1008 8.96% 10.22%

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 5 1363352 5931.39 1140 1113 229.7
A 1 162 79347 340.64 1140 1113 229.7
A 13 251 43167 183.11 1140 1113 229.7
B 4 48 66831 302.56 1144 1117 217.2
B 4 80 39273 175.68 1144 1117 217.2
B 0 219 37898 169.35 1144 1117 217.2
C 9 68 18925 69.92 1104 1107 254.8
C 14 234 9540 33.09 1104 1107 254.8
C 13 61 8366 28.48 1104 1107 254.8
D 12 233 2810529 9857.44 1080 1052 285.0
D 2 14 361958 1266.29 1080 1052 285.0
D 8 195 101063 350.9 1080 1052 285.0

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