ASTROSAT CZTI

Data Quality Report

Orbit 01164

Creation date: 2024-06-27T14:08:30.074890
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/AS1P01_997T03_9000000216_01164cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01164cztM0_level2_quad_clean.evt
Size (bytes)1,219,155,84099,313,920
Size1.1 GB 94.7 MB
Events in quadrant A8,313,808686,949
Events in quadrant B8,707,447676,113
Events in quadrant C8,381,879659,145
Events in quadrant D11,051,530493,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296752
B0308551
C0299081
D0381851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A704990.127678%
B7049771.092354%
C7049110.156051%
D7049188626.755568%

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 7454 7050 193 193 2.59% 2.74%
B 7454 7050 272 272 3.65% 3.86%
C 7454 7050 179 179 2.40% 2.54%
D 7453 7048 1918 1918 25.73% 27.21%

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 12 243 94433 178.8 2141 2154 516.1
A 11 79 7780 10.9 2141 2154 516.1
A 3 111 6973 9.34 2141 2154 516.1
B 0 49 205587 390.01 2212 2221 521.4
B 15 22 33010 59.04 2212 2221 521.4
B 14 53 16865 28.08 2212 2221 521.4
C 15 241 301199 522.67 2053 2129 572.2
C 3 111 27482 44.31 2053 2129 572.2
C 3 79 22605 35.78 2053 2129 572.2
D 1 239 5324771 11513.72 1497 1552 462.3
D 2 16 32356 66.63 1497 1552 462.3
D 13 73 26013 52.91 1497 1552 462.3

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