ASTROSAT CZTI

Data Quality Report

Orbit 19588

Creation date: 2024-06-27T18:04:31.334330
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_115T01_9000002914_19588cztM0_level2.evt modeM0/AS1T03_115T01_9000002914_19588cztM0_level2_quad_clean.evt
Size (bytes)533,329,92083,502,720
Size508.6 MB 79.6 MB
Events in quadrant A3,494,422512,855
Events in quadrant B3,886,650517,114
Events in quadrant C3,574,945498,061
Events in quadrant D4,698,655490,515

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151661
B0161811
C0153431
D0189231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73222553.482655%
B73233194.356138%
C73232883.932814%
D73233524.806773%

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 7422 7322 0 0 0.00% 0.00%
B 7423 7323 16 16 0.22% 0.22%
C 7423 7323 2 2 0.03% 0.03%
D 7423 7323 91 91 1.23% 1.24%

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 13 254 12227 61.92 899 879 183.3
A 15 191 9543 47.27 899 879 183.3
A 0 226 7719 37.32 899 879 183.3
B 15 32 238635 1383.79 888 863 171.8
B 0 198 33697 191.09 888 863 171.8
B 0 197 30330 171.49 888 863 171.8
C 14 238 131459 651.39 853 857 200.5
C 5 112 76922 379.38 853 857 200.5
C 3 233 31587 153.27 853 857 200.5
D 1 52 835363 3919.3 868 839 212.9
D 7 38 184237 861.32 868 839 212.9
D 7 238 116388 542.67 868 839 212.9

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