ASTROSAT CZTI

Data Quality Report

Orbit 23620

Creation date: 2024-06-27T18:56:52.970646
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_178T01_9000003488_23620cztM0_level2.evt modeM0/AS1T03_178T01_9000003488_23620cztM0_level2_quad_clean.evt
Size (bytes)719,432,64086,929,920
Size686.1 MB 82.9 MB
Events in quadrant A3,113,668609,340
Events in quadrant B5,665,056567,372
Events in quadrant C3,202,600598,872
Events in quadrant D9,368,677403,859

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134132
B0211622
C0135252
D0323462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6475200.308880%
B647590513.976834%
C6474430.664195%
D6474229435.434044%

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 7650 6476 0 0 0.00% 0.00%
B 7650 6475 643 643 8.41% 9.93%
C 7649 6474 0 0 0.00% 0.00%
D 7648 6474 2312 2312 30.23% 35.71%

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 10392 59.5 807 791 161.4
A 3 137 7375 40.8 807 791 161.4
A 0 226 6896 37.83 807 791 161.4
B 3 64 2542223 17697.42 763 746 143.6
B 0 229 77246 532.7 763 746 143.6
B 0 189 29657 201.32 763 746 143.6
C 14 238 124929 676.34 782 788 183.5
C 7 247 30131 159.87 782 788 183.5
C 13 61 5352 24.87 782 788 183.5
D 1 52 6907240 44715.31 637 619 154.5
D 12 233 59271 379.73 637 619 154.5
D 2 234 21017 132.06 637 619 154.5

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