ASTROSAT CZTI

Data Quality Report

Orbit 31869

Creation date: 2024-06-27T20:33:41.946238
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_109T01_9000004646_31869cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31869cztM0_level2_quad_clean.evt
Size (bytes)584,049,60079,755,840
Size557.0 MB 76.1 MB
Events in quadrant A3,304,520506,853
Events in quadrant B5,059,991502,784
Events in quadrant C4,860,901472,661
Events in quadrant D4,013,538470,047

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137082
B0201482
C0186442
D0161973

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6645610.917983%
B66451382.076749%
C66453655.492852%
D6644660.993377%

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 7561 6646 0 0 0.00% 0.00%
B 7561 6646 7 7 0.09% 0.11%
C 7561 6646 144 144 1.90% 2.17%
D 7560 6645 22 22 0.29% 0.33%

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 10096 53.79 856 842 172.0
A 3 137 8750 45.97 856 842 172.0
A 0 226 7042 36.04 856 842 172.0
B 6 159 1674924 10377.56 840 820 161.3
B 10 247 39159 237.66 840 820 161.3
B 12 111 20362 121.14 840 820 161.3
C 10 22 1152993 6088.47 805 811 189.2
C 3 233 351401 1852.62 805 811 189.2
C 14 238 138330 726.69 805 811 189.2
D 8 195 707836 3610.24 819 799 195.8
D 2 250 65993 332.89 819 799 195.8
D 13 249 65444 330.09 819 799 195.8

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