ASTROSAT CZTI

Data Quality Report

Orbit 01562

Creation date: 2024-06-27T14:12:28.774414
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/AS1G02_019T04_9000000262_01562cztM0_level2.evt modeM0/AS1G02_019T04_9000000262_01562cztM0_level2_quad_clean.evt
Size (bytes)304,300,80015,304,320
Size290.2 MB 14.6 MB
Events in quadrant A2,293,45782,071
Events in quadrant B2,332,58383,034
Events in quadrant C2,251,94180,382
Events in quadrant D2,209,59879,176

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081620
B082680
C080280
D079040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189000.000000%
B189000.000000%
C189000.000000%
D1890120.634921%

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 1890 1890 22 22 1.16% 1.16%
B 1890 1890 38 38 2.01% 2.01%
C 1890 1890 14 14 0.74% 0.74%
D 1890 1890 32 32 1.69% 1.69%

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 10 2 2752 15.11 598 600 142.4
A 13 9 1966 9.59 598 600 142.4
A 14 188 1348 5.25 598 600 142.4
B 4 170 5392 33.44 612 616 142.8
B 4 200 5007 30.74 612 616 142.8
B 0 220 2959 16.4 612 616 142.8
D 13 169 29797 173.71 570 585 168.2
D 13 53 20864 120.59 570 585 168.2
D 7 85 13406 76.24 570 585 168.2

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