ASTROSAT CZTI

Data Quality Report

Orbit 50700

Creation date: 2025-02-11T08:53:41.714361
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_241T01_9000006446_50700cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50700cztM0_level2_quad_clean.evt
Size (bytes)719,683,200108,403,200
Size686.3 MB 103.4 MB
Events in quadrant A8,039,329646,766
Events in quadrant B4,743,802786,672
Events in quadrant C6,292,099674,693
Events in quadrant D6,957,270627,955

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293283
B0196073
C0242163
D0264894

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7850120415.337580%
B78503504.458599%
C78507048.968153%
D78497229.198624%

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 7900 7852 1031 1031 13.05% 13.13%
B 7900 7852 141 141 1.78% 1.80%
C 7900 7852 429 429 5.43% 5.46%
D 7899 7851 575 575 7.28% 7.32%

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 12 80 3053407 15171.47 815 794 201.2
A 12 250 342977 1700.65 815 794 201.2
A 4 3 326944 1620.96 815 794 201.2
B 0 229 659577 3721.67 837 807 177.0
B 4 170 140588 789.68 837 807 177.0
B 0 213 114403 641.75 837 807 177.0
C 0 209 617544 2801.0 803 798 220.2
C 4 5 459930 2085.18 803 798 220.2
C 5 10 372599 1688.56 803 798 220.2
D 2 226 1022374 4661.74 788 758 219.1
D 15 185 981167 4473.71 788 758 219.1
D 2 249 386137 1758.52 788 758 219.1

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