ASTROSAT CZTI

Data Quality Report

Orbit 18474

Creation date: 2024-06-27T17:50:12.908097
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_072T02_9000002736_18474cztM0_level2.evt modeM0/AS1A05_072T02_9000002736_18474cztM0_level2_quad_clean.evt
Size (bytes)547,122,240101,505,600
Size521.8 MB 96.8 MB
Events in quadrant A4,071,830633,971
Events in quadrant B3,917,197651,313
Events in quadrant C3,860,985634,313
Events in quadrant D4,188,334610,270

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172033
B0166603
C0165073
D0178303

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78153244.145873%
B78163013.851075%
C78152973.800384%
D78152773.544466%

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 8085 7816 20 20 0.25% 0.26%
B 8086 7817 6 6 0.07% 0.08%
C 8085 7816 0 0 0.00% 0.00%
D 8085 7815 16 16 0.20% 0.20%

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 15 174 330426 1685.72 956 933 195.5
A 0 13 60097 302.69 956 933 195.5
A 13 254 8478 38.6 956 933 195.5
B 0 230 80574 424.39 956 932 187.7
B 10 245 35182 182.51 956 932 187.7
B 15 222 26824 137.97 956 932 187.7
C 14 238 141704 648.06 921 926 217.2
C 3 233 129458 591.69 921 926 217.2
C 13 61 6488 25.6 921 926 217.2
D 7 238 251275 1098.3 924 895 228.0
D 13 168 239274 1045.66 924 895 228.0
D 7 38 91433 397.15 924 895 228.0

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