ASTROSAT CZTI

Data Quality Report

Orbit 13282

Creation date: 2024-06-27T16:38:40.208080
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/AS1A04_167T02_9000001974_13282cztM0_level2.evt modeM0/AS1A04_167T02_9000001974_13282cztM0_level2_quad_clean.evt
Size (bytes)1,769,797,440198,322,560
Size1.6 GB 189.1 MB
Events in quadrant A8,540,0971,261,251
Events in quadrant B16,046,7201,127,168
Events in quadrant C7,812,2781,304,031
Events in quadrant D20,048,5191,133,759

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03440
B03440
C03440
D03440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365403
B0589922
C0349792
D0717402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170893071.796477%
B17089407023.816490%
C170891240.725613%
D17089305717.888700%

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 17310 17092 4 4 0.02% 0.02%
B 17310 17091 2549 2549 14.73% 14.91%
C 17310 17092 4 4 0.02% 0.02%
D 17310 17091 2357 2357 13.62% 13.79%

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 15 239 432269 1041.4 2021 1972 413.2
A 8 15 155016 370.39 2021 1972 413.2
A 1 162 85614 202.43 2021 1972 413.2
B 4 239 8487508 26074.03 1702 1657 325.5
B 0 244 228384 696.65 1702 1657 325.5
B 3 64 221815 676.47 1702 1657 325.5
C 15 208 55650 117.87 1980 1993 455.2
C 13 61 14314 27.07 1980 1993 455.2
C 14 234 12871 23.9 1980 1993 455.2
D 1 52 6869736 15286.47 1846 1791 449.3
D 13 249 5714788 12715.82 1846 1791 449.3
D 8 195 369442 818.31 1846 1791 449.3

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