ASTROSAT CZTI

Data Quality Report

Orbit 15613

Creation date: 2024-06-27T17:11:08.373553
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/AS1G08_031T01_9000002314_15613cztM0_level2.evt modeM0/AS1G08_031T01_9000002314_15613cztM0_level2_quad_clean.evt
Size (bytes)1,481,002,560263,543,040
Size1.4 GB 251.3 MB
Events in quadrant A10,575,6421,620,169
Events in quadrant B11,732,8641,644,027
Events in quadrant C10,684,0541,589,919
Events in quadrant D10,334,0851,575,105

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0462985
B0498624
C0462374
D0464874

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04580
B04580
C04580
D04580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22567800.354500%
B225671760.779900%
C225672090.926131%
D22567980.434262%

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 25133 22572 5 5 0.02% 0.02%
B 25133 22570 22 22 0.09% 0.10%
C 25133 22569 11 11 0.04% 0.05%
D 25133 22571 53 53 0.21% 0.23%

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 0 253 108244 194.11 2692 2629 544.1
A 7 16 38625 66.16 2692 2629 544.1
A 0 226 23872 39.04 2692 2629 544.1
B 4 251 763170 1480.15 2687 2615 513.8
B 4 173 203990 391.9 2687 2615 513.8
B 0 189 105061 199.37 2687 2615 513.8
C 14 238 395899 649.49 2590 2604 605.5
C 3 233 55285 87.0 2590 2604 605.5
C 7 247 52711 82.75 2590 2604 605.5
D 1 52 120615 183.92 2634 2557 641.9
D 2 234 106222 161.5 2634 2557 641.9
D 2 152 88721 134.23 2634 2557 641.9

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