ASTROSAT CZTI

Data Quality Report

Orbit 20181214_A05_012T02_9000002566_level2

Creation date: 2025-11-26T14:30:20.145482
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/AS1A05_012T02_9000002566cztM0_level2.fits modeM0/AS1A05_012T02_9000002566cztM0_level2_quad_clean.evt
Size (bytes)131,368,320131,762,880
Size125.3 MB 125.7 MB
Events in quadrant A843,346860,234
Events in quadrant B806,139851,687
Events in quadrant C822,464807,992
Events in quadrant D627,022591,697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B02600
C03580
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268880
B0274870
C0276360
D0538100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125432592.064897%
B125463072.446995%
C125303722.968875%
D12537323325.787669%

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 16233 12523 0 0 0.00% 0.00%
B 16233 12523 0 0 0.00% 0.00%
C 16232 12521 0 0 0.00% 0.00%
D 16232 12508 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 29 787 10.38 219 207 55.9
A 7 110 624 7.46 219 207 55.9
A 0 30 619 7.37 219 207 55.9
B 2 9 649 10.09 213 205 44.0
B 3 80 566 8.21 213 205 44.0
B 2 8 545 7.73 213 205 44.0
C 1 81 645 8.02 217 205 54.8
C 1 80 623 7.62 217 205 54.8
C 3 126 604 7.28 217 205 54.8
D 10 189 456 6.06 179 164 48.2
D 15 142 449 5.92 179 164 48.2
D 7 3 443 5.79 179 164 48.2

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