ASTROSAT CZTI

Data Quality Report

Orbit 12844

Creation date: 2024-06-27T16:33:03.156776
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/AS1G08_071T01_9000001888_12844cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12844cztM0_level2_quad_clean.evt
Size (bytes)669,867,840106,269,120
Size638.8 MB 101.3 MB
Events in quadrant A4,198,732669,132
Events in quadrant B5,417,040670,577
Events in quadrant C3,832,104675,820
Events in quadrant D6,283,167632,264

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179093
B0216902
C0171192
D0245092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8209580.706542%
B82094675.688878%
C8209370.450725%
D82095626.846144%

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 8765 8212 0 0 0.00% 0.00%
B 8765 8212 217 217 2.48% 2.64%
C 8765 8212 1 1 0.01% 0.01%
D 8765 8212 464 464 5.29% 5.65%

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 12 189 387529 1914.89 989 967 201.9
A 8 15 10421 46.83 989 967 201.9
A 0 226 8909 39.34 989 967 201.9
B 4 239 895537 4742.83 978 953 188.6
B 0 85 413470 2187.05 978 953 188.6
B 0 219 98289 516.05 978 953 188.6
C 14 234 22123 93.85 972 974 225.4
C 8 128 12632 51.73 972 974 225.4
C 13 61 7033 26.88 972 974 225.4
D 1 52 1847899 8084.32 942 912 228.5
D 4 95 587621 2568.04 942 912 228.5
D 13 172 192621 839.12 942 912 228.5

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