ASTROSAT CZTI

Data Quality Report

Orbit 50930

Creation date: 2025-02-27T09:08:59.847720
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/AS1C07_001T01_9000006450_50930cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50930cztM0_level2_quad_clean.evt
Size (bytes)487,702,08090,953,280
Size465.1 MB 86.7 MB
Events in quadrant A6,339,086571,492
Events in quadrant B3,335,993650,209
Events in quadrant C3,788,140568,394
Events in quadrant D4,104,834527,367

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232731
B0143831
C0150941
D0165881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62515879.390498%
B62521602.559181%
C62521832.927063%
D62522984.766475%

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 7301 6251 460 460 6.30% 7.36%
B 7302 6252 21 21 0.29% 0.34%
C 7302 6252 65 65 0.89% 1.04%
D 7302 6252 220 220 3.01% 3.52%

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 14 254 1671615 10179.35 657 640 164.2
A 4 4 731990 4455.28 657 640 164.2
A 15 174 325341 1978.03 657 640 164.2
B 10 254 207230 1451.16 665 643 142.4
B 15 54 139251 973.64 665 643 142.4
B 8 128 85639 597.05 665 643 142.4
C 12 247 455128 2557.54 650 645 177.7
C 4 5 168146 942.59 650 645 177.7
C 13 3 118021 660.52 650 645 177.7
D 8 176 436493 2422.34 644 619 179.9
D 2 249 385258 2137.61 644 619 179.9
D 3 12 150850 834.9 644 619 179.9

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