ASTROSAT CZTI

Data Quality Report

Orbit 31425

Creation date: 2024-06-27T20:28:09.735764
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/AS1A10_094T30_9000004566_31425cztM0_level2.evt modeM0/AS1A10_094T30_9000004566_31425cztM0_level2_quad_clean.evt
Size (bytes)753,647,040122,702,400
Size718.7 MB 117.0 MB
Events in quadrant A3,118,663963,935
Events in quadrant B11,462,974443,311
Events in quadrant C3,434,920957,959
Events in quadrant D4,399,900928,536

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128151
B0381911
C0139741
D0170311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6019100.166141%
B6020472178.421927%
C60201392.308970%
D60201322.192691%

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 7389 6020 0 0 0.00% 0.00%
B 7390 6020 3183 3183 43.07% 52.87%
C 7390 6021 13 13 0.18% 0.22%
D 7390 6021 92 92 1.24% 1.53%

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 13 254 11426 67.18 808 795 158.3
A 3 137 7387 41.65 808 795 158.3
A 0 226 6907 38.62 808 795 158.3
B 12 1 9068013 124483.51 394 385 72.8
B 6 159 799100 10965.03 394 385 72.8
B 4 80 38238 519.66 394 385 72.8
C 10 22 142031 774.57 800 808 182.3
C 14 238 139609 761.28 800 808 182.3
C 2 114 13899 71.8 800 808 182.3
D 8 195 773760 3735.85 792 783 206.9
D 12 218 427195 2060.88 792 783 206.9
D 1 52 52035 247.7 792 783 206.9

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