ASTROSAT CZTI

Data Quality Report

Orbit 11793

Creation date: 2024-06-27T16:18:21.252426
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_058T09_9000001744_11793cztM0_level2.evt modeM0/AS1G08_058T09_9000001744_11793cztM0_level2_quad_clean.evt
Size (bytes)524,108,16086,529,600
Size499.8 MB 82.5 MB
Events in quadrant A4,594,811540,510
Events in quadrant B4,106,411551,992
Events in quadrant C2,957,881554,690
Events in quadrant D3,775,907522,761

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178643
B0162972
C0131652
D0156122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64522003.099814%
B64521712.650341%
C6452170.263484%
D64521191.844389%

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 7588 6454 129 129 1.70% 2.00%
B 7588 6454 88 88 1.16% 1.36%
C 7588 6454 8 8 0.11% 0.12%
D 7588 6454 97 97 1.28% 1.50%

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 8 15 1342418 8654.54 761 746 155.0
A 1 162 122110 782.87 761 746 155.0
A 1 178 64772 413.0 761 746 155.0
B 10 16 637941 4383.87 767 748 145.3
B 4 239 250210 1716.29 767 748 145.3
B 3 64 91075 621.45 767 748 145.3
C 7 238 36590 205.57 749 754 174.3
C 13 61 5537 27.44 749 754 174.3
C 12 4 1968 6.96 749 754 174.3
D 1 52 316666 1756.38 739 718 179.9
D 9 85 293500 1627.6 739 718 179.9
D 13 104 129703 717.04 739 718 179.9

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