ASTROSAT CZTI

Data Quality Report

Orbit 17418

Creation date: 2024-06-27T17:36:18.505024
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_198T01_9000002578_17418cztM0_level2.evt modeM0/AS1A05_198T01_9000002578_17418cztM0_level2_quad_clean.evt
Size (bytes)533,894,40096,540,480
Size509.2 MB 92.1 MB
Events in quadrant A3,682,794606,146
Events in quadrant B3,990,336612,571
Events in quadrant C3,854,412584,299
Events in quadrant D4,110,848577,041

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162452
B0168952
C0163502
D0177452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78071091.396183%
B78071882.408095%
C78061712.190623%
D78071782.280005%

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 8237 7810 0 0 0.00% 0.00%
B 8237 7810 2 2 0.02% 0.03%
C 8236 7809 0 0 0.00% 0.00%
D 8237 7810 81 81 0.98% 1.04%

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 6 16 15360 73.28 953 930 196.9
A 0 226 8138 36.61 953 930 196.9
A 3 137 7307 32.39 953 930 196.9
B 0 219 62729 333.62 953 928 185.2
B 0 197 51123 270.97 953 928 185.2
B 0 230 46099 243.85 953 928 185.2
C 14 238 138455 634.06 910 914 216.9
C 5 218 65277 296.71 910 914 216.9
C 3 233 62463 283.74 910 914 216.9
D 13 189 208453 906.68 922 895 228.9
D 13 232 102272 442.85 922 895 228.9
D 7 38 90120 389.76 922 895 228.9

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