ASTROSAT CZTI

Data Quality Report

Orbit 50612

Creation date: 2025-02-05T10:27:19.046232
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/AS1T05_239T01_9000006444_50612cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50612cztM0_level2_quad_clean.evt
Size (bytes)574,922,880100,022,400
Size548.3 MB 95.4 MB
Events in quadrant A4,824,115644,469
Events in quadrant B4,352,744712,213
Events in quadrant C4,885,903626,071
Events in quadrant D6,664,641547,838

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193122
B0179464
C0197662
D0249732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71463444.813882%
B71452713.792862%
C71464306.017352%
D714685211.922754%

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 8901 7148 225 225 2.53% 3.15%
B 8900 7146 92 92 1.03% 1.29%
C 8901 7147 274 274 3.08% 3.83%
D 8901 7147 742 742 8.34% 10.38%

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 9 96 610875 3292.2 754 733 185.3
A 3 114 331033 1782.23 754 733 185.3
A 6 161 260636 1402.38 754 733 185.3
B 5 185 287568 1775.1 754 726 161.6
B 5 172 236944 1461.81 754 726 161.6
B 4 170 185644 1144.35 754 726 161.6
C 0 177 665697 3295.4 733 725 201.8
C 15 232 206687 1020.69 733 725 201.8
C 13 3 166323 820.65 733 725 201.8
D 8 48 640828 3296.58 697 671 194.2
D 8 246 608460 3129.9 697 671 194.2
D 15 9 450780 2317.9 697 671 194.2

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