ASTROSAT CZTI

Data Quality Report

Orbit 47353

Creation date: 2024-07-02T13:19:29.654339
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/AS1A13_093T17_9000006322_47353cztM0_level2.fits modeM0/AS1A13_093T17_9000006322_47353cztM0_level2_quad_clean.evt
Size (bytes)1,462,988,160284,008,320
Size1.4 GB 270.9 MB
Events in quadrant A20,582,8761,868,726
Events in quadrant B10,482,8311,857,306
Events in quadrant C8,562,8331,910,161
Events in quadrant D13,064,7101,658,504

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07590516
B0438399
C0392738
D0512974

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1892013006.871036%
B1892011295.967230%
C189213671.939644%
D1892315758.323205%

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 20028 18922 534 534 2.67% 2.82%
B 20028 18922 404 404 2.02% 2.14%
C 20029 18925 9 9 0.04% 0.05%
D 20029 18925 992 992 4.95% 5.24%

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 10 83 9567021 21852.92 2119 2070 437.7
A 15 235 1662567 3793.72 2119 2070 437.7
A 9 191 1004504 2290.25 2119 2070 437.7
B 0 186 993063 2367.98 2094 2026 418.5
B 5 255 300030 712.05 2094 2026 418.5
B 0 190 287859 682.97 2094 2026 418.5
C 3 233 177191 349.08 2121 2130 501.5
C 12 249 55877 107.17 2121 2130 501.5
C 12 2 36577 68.69 2121 2130 501.5
D 12 2 3360776 6307.51 2080 2013 532.5
D 10 204 483436 904.08 2080 2013 532.5
D 2 165 312513 583.1 2080 2013 532.5

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