ASTROSAT CZTI

Data Quality Report

Orbit 31162

Creation date: 2024-06-27T20:24:45.424568
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/AS1C06_010T01_9000004504_31162cztM0_level2.evt modeM0/AS1C06_010T01_9000004504_31162cztM0_level2_quad_clean.evt
Size (bytes)394,896,96084,562,560
Size376.6 MB 80.6 MB
Events in quadrant A2,048,651587,760
Events in quadrant B3,441,978576,243
Events in quadrant C2,075,612553,040
Events in quadrant D4,101,566541,564

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088241
B0133481
C088231
D0155001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4295110.256112%
B4295541.257276%
C4295310.721769%
D42951623.771828%

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 4295 4295 7 7 0.16% 0.16%
B 4295 4295 9 9 0.21% 0.21%
C 4295 4295 0 0 0.00% 0.00%
D 4295 4295 145 145 3.38% 3.38%

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 27326 257.77 521 513 104.0
A 11 47 9804 89.32 521 513 104.0
A 13 254 8154 73.46 521 513 104.0
B 6 159 1220344 12629.18 508 495 96.6
B 15 33 113628 1171.27 508 495 96.6
B 0 190 55226 566.63 508 495 96.6
C 14 238 82043 713.84 489 492 114.2
C 0 10 39749 343.63 489 492 114.2
C 3 233 12900 108.61 489 492 114.2
D 8 195 1869860 15762.52 498 485 118.6
D 12 233 115241 967.62 498 485 118.6
D 13 174 86101 721.91 498 485 118.6

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