ASTROSAT CZTI

Data Quality Report

Orbit 11374

Creation date: 2024-06-27T16:12:00.790831
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_022T02_9000001662_11374cztM0_level2.evt modeM0/AS1A04_022T02_9000001662_11374cztM0_level2_quad_clean.evt
Size (bytes)544,109,760101,903,040
Size518.9 MB 97.2 MB
Events in quadrant A3,467,798655,103
Events in quadrant B4,430,294643,055
Events in quadrant C3,321,170687,156
Events in quadrant D4,797,132626,163

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150262
B0176921
C0142681
D0187681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68101402.055800%
B68103585.256975%
C6810981.439060%
D68104616.769457%

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 9045 6813 0 0 0.00% 0.00%
B 9045 6813 171 171 1.89% 2.51%
C 9045 6813 1 1 0.01% 0.01%
D 9045 6813 299 299 3.31% 4.39%

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 13 251 72720 406.1 865 848 177.0
A 1 162 22009 119.57 865 848 177.0
A 1 178 12829 67.7 865 848 177.0
B 3 64 546460 3413.27 846 827 159.9
B 4 239 350916 2190.02 846 827 159.9
B 11 51 136707 850.01 846 827 159.9
C 13 61 6116 26.61 850 857 197.6
C 14 234 4169 16.76 850 857 197.6
C 12 4 2929 10.48 850 857 197.6
D 14 34 414599 2159.26 823 808 191.6
D 10 253 347667 1809.99 823 808 191.6
D 1 52 282976 1472.42 823 808 191.6

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