ASTROSAT CZTI

Data Quality Report

Orbit 20270

Creation date: 2024-06-27T18:13:18.020880
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/AS1A05_175T01_9000003004_20270cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20270cztM0_level2_quad_clean.evt
Size (bytes)507,516,48094,458,240
Size484.0 MB 90.1 MB
Events in quadrant A3,929,507604,520
Events in quadrant B3,868,226607,702
Events in quadrant C3,333,421587,147
Events in quadrant D3,769,495579,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161771
B0160241
C0143551
D0158712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69132413.486185%
B69131762.545928%
C69141151.663292%
D69131622.343411%

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 7308 6914 108 108 1.48% 1.56%
B 7308 6914 51 51 0.70% 0.74%
C 7309 6915 0 0 0.00% 0.00%
D 7308 6914 75 75 1.03% 1.08%

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 529504 3178.01 826 806 166.4
A 14 254 142033 848.92 826 806 166.4
A 4 2 24301 141.23 826 806 166.4
B 7 220 322010 2025.26 823 801 158.6
B 4 142 170511 1070.04 823 801 158.6
B 0 244 81509 508.87 823 801 158.6
C 14 238 123789 648.69 800 805 189.6
C 9 221 68305 356.03 800 805 189.6
C 3 233 9013 43.29 800 805 189.6
D 1 52 326401 1654.47 814 791 196.8
D 11 176 247248 1252.28 814 791 196.8
D 2 234 49329 246.63 814 791 196.8

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