ASTROSAT CZTI

Data Quality Report

Orbit 46169

Creation date: 2024-06-27T23:19:56.861859
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/AS1T05_194T01_9000006180_46169cztM0_level2.fits modeM0/AS1T05_194T01_9000006180_46169cztM0_level2_quad_clean.evt
Size (bytes)477,322,560101,243,520
Size455.2 MB 96.6 MB
Events in quadrant A5,597,991682,261
Events in quadrant B3,666,743711,061
Events in quadrant C2,671,700671,529
Events in quadrant D5,266,691581,465

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205261
B0147201
C0123741
D0199401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60051903.164030%
B60051171.948376%
C6004130.216522%
D60054998.309742%

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 7185 6006 37 37 0.51% 0.62%
B 7185 6006 31 31 0.43% 0.52%
C 7184 6005 6 6 0.08% 0.10%
D 7185 6006 412 412 5.73% 6.86%

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 10 83 2807770 20083.21 680 669 139.8
A 9 191 66571 471.49 680 669 139.8
A 0 247 49386 348.54 680 669 139.8
B 3 112 753839 5650.64 679 657 133.3
B 15 201 97774 728.61 679 657 133.3
B 0 186 65870 489.25 679 657 133.3
C 12 2 47169 302.03 656 659 154.0
C 14 254 46255 296.09 656 659 154.0
C 3 233 9615 58.16 656 659 154.0
D 1 52 991464 6185.52 635 614 160.2
D 13 249 743364 4636.72 635 614 160.2
D 5 235 411174 2562.98 635 614 160.2

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