ASTROSAT CZTI

Data Quality Report

Orbit 20250919_A14_041T01_9000006510_level2

Creation date: 2025-10-05T09:31:06.418927
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/AS1A14_041T01_9000006510cztM0_level2.fits modeM0/AS1A14_041T01_9000006510cztM0_level2_quad_clean.evt
Size (bytes)5,010,549,1202,438,850,240
Size4.7 GB 2.3 GB
Events in quadrant A31,122,9568,706,971
Events in quadrant B28,764,9249,086,088
Events in quadrant C28,889,7787,705,236
Events in quadrant D19,793,9565,305,467

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07430
B07430
C07440
D07440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127360
B0127360
C0127360
D0127360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014999720
B017017500
C017659840
D029400290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A628239231813.689838%
B628248419216.672683%
C628251504848.035642%
D62824321380834.032691%

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 757395 627920 0 0 0.00% 0.00%
B 757396 627721 0 0 0.00% 0.00%
C 757396 625337 0 0 0.00% 0.00%
D 757396 591872 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 14 188 34960 9.95 8188 7549 2753.7
A 9 255 31306 8.63 8188 7549 2753.7
A 14 204 28575 7.64 8188 7549 2753.7
B 2 9 33197 14.57 7646 7256 1779.8
B 2 8 29520 12.51 7646 7256 1779.8
B 9 173 24095 9.46 7646 7256 1779.8
C 15 175 24444 6.51 7751 7049 2670.3
C 2 31 23267 6.07 7751 7049 2670.3
C 3 203 22337 5.73 7751 7049 2670.3
D 6 218 25301 10.45 5681 5024 1939.6
D 15 11 19310 7.37 5681 5024 1939.6
D 3 30 18200 6.79 5681 5024 1939.6

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