ASTROSAT CZTI

Data Quality Report

Orbit 19849

Creation date: 2024-06-27T18:07:52.222508
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/AS1T03_118T01_9000002962_19849cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19849cztM0_level2_quad_clean.evt
Size (bytes)854,979,840104,160,960
Size815.4 MB 99.3 MB
Events in quadrant A12,311,911579,799
Events in quadrant B3,665,147710,106
Events in quadrant C3,667,628681,015
Events in quadrant D5,726,038644,885

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0418601
B0159571
C0158972
D0223701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7729361346.746021%
B77292072.678225%
C77282122.743271%
D77295727.400699%

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 7859 7729 3157 3157 40.17% 40.85%
B 7859 7730 0 0 0.00% 0.00%
C 7858 7730 0 0 0.00% 0.00%
D 7859 7730 383 383 4.87% 4.95%

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 14 238 8627552 55702.12 764 747 154.9
A 14 254 728421 4698.49 764 747 154.9
A 5 16 12271 74.41 764 747 154.9
B 12 111 22128 119.11 926 902 178.2
B 4 216 21375 114.89 926 902 178.2
B 11 111 19777 105.92 926 902 178.2
C 14 238 139436 652.3 899 904 212.4
C 9 221 16453 73.21 899 904 212.4
C 13 61 6078 24.36 899 904 212.4
D 2 184 1651301 7513.79 900 870 219.7
D 1 52 664877 3022.97 900 870 219.7
D 2 234 30662 135.63 900 870 219.7

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