ASTROSAT CZTI

Data Quality Report

Orbit 12109

Creation date: 2024-06-27T16:22:31.801966
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_065T01_9000001796_12109cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12109cztM0_level2_quad_clean.evt
Size (bytes)452,750,40077,319,360
Size431.8 MB 73.7 MB
Events in quadrant A2,884,042494,774
Events in quadrant B4,675,258467,759
Events in quadrant C2,647,110490,577
Events in quadrant D3,102,509474,121

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123552
B0179561
C0120431
D0132011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5925711.198312%
B59255088.573840%
C5925250.421941%
D59251412.379747%

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 6811 5926 4 4 0.06% 0.07%
B 6811 5927 326 326 4.79% 5.50%
C 6811 5927 4 4 0.06% 0.07%
D 6811 5927 79 79 1.16% 1.33%

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 1 162 73533 513.57 696 682 141.9
A 1 178 33183 229.12 696 682 141.9
A 1 161 30638 211.18 696 682 141.9
B 4 239 1316380 10167.58 669 652 129.4
B 4 206 336677 2596.71 669 652 129.4
B 0 85 199311 1535.18 669 652 129.4
C 15 208 24416 152.8 669 671 155.4
C 14 234 9266 55.31 669 671 155.4
C 13 61 4965 27.63 669 671 155.4
D 1 52 307404 1902.18 666 645 161.3
D 8 195 91080 560.78 666 645 161.3
D 10 50 55258 338.65 666 645 161.3

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