ASTROSAT CZTI

Data Quality Report

Orbit 20200505_A08_003T13_9000003646_level2

Creation date: 2025-12-10T21:21:34.872063
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/AS1A08_003T13_9000003646cztM0_level2.fits modeM0/AS1A08_003T13_9000003646cztM0_level2_quad_clean.evt
Size (bytes)464,068,800313,467,840
Size442.6 MB 298.9 MB
Events in quadrant A2,924,0921,708,188
Events in quadrant B2,824,6781,732,819
Events in quadrant C2,804,0641,603,300
Events in quadrant D2,414,0761,359,406

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09180
B09180
C09180
D09180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0961170
B0952240
C0970880
D01171160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A449728541.898959%
B449727831.741083%
C449729862.192475%
D4497221264.727386%

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 52717 44972 0 0 0.00% 0.00%
B 52717 44972 0 0 0.00% 0.00%
C 52717 44974 0 0 0.00% 0.00%
D 52717 44918 0 0 0.00% 0.00%

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 29 2750 11.01 761 717 184.7
A 7 110 2324 8.7 761 717 184.7
A 0 30 2198 8.02 761 717 184.7
B 2 9 2298 10.74 746 712 147.6
B 2 8 1921 8.19 746 712 147.6
B 3 80 1845 7.68 746 712 147.6
C 1 81 2123 7.58 740 695 188.4
C 1 80 2073 7.31 740 695 188.4
C 9 209 1885 6.31 740 695 188.4
D 10 189 1713 6.0 687 626 181.2
D 3 14 1694 5.89 687 626 181.2
D 6 67 1693 5.89 687 626 181.2

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