ASTROSAT CZTI

Data Quality Report

Orbit 18656

Creation date: 2024-06-27T17:53:01.230325
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/AS1A06_003T01_9000002786_18656cztM0_level2.evt modeM0/AS1A06_003T01_9000002786_18656cztM0_level2_quad_clean.evt
Size (bytes)713,465,28080,634,240
Size680.4 MB 76.9 MB
Events in quadrant A3,651,089534,645
Events in quadrant B3,537,312542,648
Events in quadrant C3,920,217519,514
Events in quadrant D10,062,046393,620

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151282
B0147093
C0159552
D0344892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64541302.014255%
B64531332.061057%
C64531872.897877%
D6453255139.532001%

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 7694 6454 12 12 0.16% 0.19%
B 7693 6453 7 7 0.09% 0.11%
C 7693 6453 7 7 0.09% 0.11%
D 7692 6452 2435 2435 31.66% 37.74%

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 0 13 161550 902.96 895 880 177.9
A 6 16 30563 166.82 895 880 177.9
A 13 254 9035 45.83 895 880 177.9
B 4 216 31899 188.61 885 865 164.5
B 4 80 22068 128.86 885 865 164.5
B 12 111 19310 112.1 885 865 164.5
C 3 233 287778 1446.55 859 869 198.3
C 9 221 138756 695.2 859 869 198.3
C 14 238 134603 674.27 859 869 198.3
D 7 238 6972673 39410.57 735 716 176.9
D 1 52 226399 1275.72 735 716 176.9
D 13 168 40007 222.1 735 716 176.9

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