ASTROSAT CZTI

Data Quality Report

Orbit 21537

Creation date: 2024-06-27T18:29:17.503984
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/AS1T03_138T03_9000003178_21537cztM0_level2.evt modeM0/AS1T03_138T03_9000003178_21537cztM0_level2_quad_clean.evt
Size (bytes)459,754,56081,820,800
Size438.5 MB 78.0 MB
Events in quadrant A3,293,159525,849
Events in quadrant B3,367,008541,881
Events in quadrant C3,276,217500,345
Events in quadrant D3,565,190475,608

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133982
B0137402
C0133602
D0146082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6218280.450306%
B6218320.514635%
C6218520.836282%
D62181111.785140%

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 7563 6219 6 6 0.08% 0.10%
B 7563 6219 0 0 0.00% 0.00%
C 7563 6219 1 1 0.01% 0.02%
D 7563 6219 89 89 1.18% 1.43%

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 12 96 37748 221.83 844 830 166.4
A 13 254 8823 48.03 844 830 166.4
A 0 226 7327 39.04 844 830 166.4
B 0 190 27681 171.96 845 827 156.2
B 0 230 26403 163.78 845 827 156.2
B 12 111 18540 113.43 845 827 156.2
C 14 238 129263 697.38 798 807 184.2
C 0 239 21705 113.45 798 807 184.2
C 3 233 8050 39.32 798 807 184.2
D 1 52 340458 1801.46 791 771 188.6
D 9 68 106634 561.42 791 771 188.6
D 14 35 95328 501.46 791 771 188.6

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