ASTROSAT CZTI

Data Quality Report

Orbit 13128

Creation date: 2024-06-27T16:36:40.593499
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/AS1G08_031T02_9000001934_13128cztM0_level2.evt modeM0/AS1G08_031T02_9000001934_13128cztM0_level2_quad_clean.evt
Size (bytes)905,829,120106,669,440
Size863.9 MB 101.7 MB
Events in quadrant A3,340,264795,948
Events in quadrant B4,597,669777,436
Events in quadrant C2,965,070811,830
Events in quadrant D16,088,370386,681

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142553
B0180022
C0133832
D0523072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6540450.688073%
B65406049.235474%
C6540100.152905%
D6540574387.813456%

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 7851 6542 28 28 0.36% 0.43%
B 7851 6542 306 306 3.90% 4.68%
C 7851 6542 0 0 0.00% 0.00%
D 7851 6541 5667 5667 72.18% 86.64%

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 4 2 125139 812.93 770 756 153.0
A 12 189 103284 670.09 770 756 153.0
A 15 223 76222 493.22 770 756 153.0
B 4 239 1271525 9211.41 746 729 138.0
B 0 85 286724 2073.04 746 729 138.0
B 0 230 42751 304.6 746 729 138.0
C 13 61 5719 28.7 759 764 172.6
C 14 225 2718 11.32 759 764 172.6
C 14 234 2633 10.83 759 764 172.6
D 13 122 13965582 141454.18 417 406 98.7
D 1 52 508268 5144.17 417 406 98.7
D 2 234 12626 123.78 417 406 98.7

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