ASTROSAT CZTI

Data Quality Report

Orbit 12510

Creation date: 2024-06-27T16:28:27.122157
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/AS1T01_218T01_9000001852_12510cztM0_level2.evt modeM0/AS1T01_218T01_9000001852_12510cztM0_level2_quad_clean.evt
Size (bytes)510,278,40089,452,800
Size486.6 MB 85.3 MB
Events in quadrant A3,750,668549,552
Events in quadrant B3,866,234564,098
Events in quadrant C3,390,966554,643
Events in quadrant D3,947,582529,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157211
B0161730
C0153020
D0167750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73312233.041877%
B73312853.887601%
C73311552.114309%
D73312122.891829%

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 7332 7332 0 0 0.00% 0.00%
B 7332 7332 38 38 0.52% 0.52%
C 7332 7332 14 14 0.19% 0.19%
D 7332 7332 59 59 0.80% 0.80%

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 12 189 191580 1064.94 879 858 179.1
A 1 162 57619 316.94 879 858 179.1
A 1 178 35841 195.33 879 858 179.1
B 4 239 319792 1871.83 878 855 170.4
B 11 51 30298 172.8 878 855 170.4
B 3 209 23030 130.14 878 855 170.4
C 14 234 78271 389.76 849 850 198.6
C 13 61 6219 27.03 849 850 198.6
C 8 222 2311 7.36 849 850 198.6
D 1 52 359953 1735.76 848 819 206.9
D 1 255 137055 658.45 848 819 206.9
D 7 71 102101 489.51 848 819 206.9

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