ASTROSAT CZTI

Data Quality Report

Orbit 22579

Creation date: 2024-06-27T18:43:03.595860
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/AS1A07_054T01_9000003348_22579cztM0_level2.evt modeM0/AS1A07_054T01_9000003348_22579cztM0_level2_quad_clean.evt
Size (bytes)483,359,040101,309,760
Size461.0 MB 96.6 MB
Events in quadrant A3,146,632679,731
Events in quadrant B3,206,020677,117
Events in quadrant C3,341,699651,240
Events in quadrant D4,530,265634,146

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133221
B0135891
C0139161
D0176951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6100621.016393%
B6100661.081967%
C61001101.803279%
D60993515.755042%

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 7390 6101 0 0 0.00% 0.00%
B 7390 6101 0 0 0.00% 0.00%
C 7390 6101 0 0 0.00% 0.00%
D 7389 6100 289 289 3.91% 4.74%

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 10074 57.81 815 799 160.5
A 0 226 7141 39.53 815 799 160.5
A 3 137 6399 34.9 815 799 160.5
B 12 111 16886 108.66 805 788 148.1
B 0 245 15992 102.63 805 788 148.1
B 0 190 15002 95.95 805 788 148.1
C 10 222 133630 738.42 786 791 179.9
C 14 238 126405 698.26 786 791 179.9
C 10 22 12439 64.75 786 791 179.9
D 1 52 1347604 7211.04 790 771 186.8
D 12 33 52185 275.27 790 771 186.8
D 12 227 39474 207.22 790 771 186.8

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