ASTROSAT CZTI

Data Quality Report

Orbit 20134

Creation date: 2024-06-27T18:11:41.119241
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_180T01_9000002992_20134cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20134cztM0_level2_quad_clean.evt
Size (bytes)506,280,96072,080,640
Size482.8 MB 68.7 MB
Events in quadrant A4,291,752426,351
Events in quadrant B3,429,552463,518
Events in quadrant C3,667,292437,271
Events in quadrant D3,537,518436,706

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163721
B0137571
C0148741
D0140041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59905238.731219%
B59911382.303455%
C59911392.320147%
D59911652.754131%

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 7315 5991 271 271 3.70% 4.52%
B 7316 5992 5 5 0.07% 0.08%
C 7316 5992 0 0 0.00% 0.00%
D 7316 5992 72 72 0.98% 1.20%

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 1055756 6382.13 837 825 165.3
A 0 226 7360 39.54 837 825 165.3
A 13 254 6893 36.71 837 825 165.3
B 0 183 44572 278.08 847 830 157.3
B 3 64 22489 137.69 847 830 157.3
B 0 190 20859 127.33 847 830 157.3
C 3 233 349687 1885.9 805 814 185.0
C 14 238 129796 697.24 805 814 185.0
C 8 208 34824 183.85 805 814 185.0
D 1 52 247553 1257.22 827 809 196.3
D 11 176 116013 586.99 827 809 196.3
D 2 234 22254 109.27 827 809 196.3

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