ASTROSAT CZTI

Data Quality Report

Orbit 20240321_T05_187T01_9000006132_level2

Creation date: 2024-03-23T09:43:28.525716
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_187T01_9000006132cztM0_level2.fits modeM0/AS1T05_187T01_9000006132cztM0_level2_quad_clean.evt
Size (bytes)463,461,120529,951,680
Size442.0 MB 505.4 MB
Events in quadrant A2,781,8703,387,576
Events in quadrant B2,322,0362,846,783
Events in quadrant C2,852,1363,292,545
Events in quadrant D2,333,3942,786,529

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011020
B011020
C011020
D011020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01730690
B02704150
C01121540
D01607370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5444917313.179122%
B544501738631.930211%
C544503390.622590%
D5445046248.492195%

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 58930 54449 0 0 0.00% 0.00%
B 58931 54383 0 0 0.00% 0.00%
C 58931 54449 0 0 0.00% 0.00%
D 58931 54294 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 7 110 2287 8.65 725 678 185.9
A 15 236 2226 8.33 725 678 185.9
A 0 29 2172 8.03 725 678 185.9
B 2 9 2157 12.75 615 582 123.4
B 2 8 1671 8.82 615 582 123.4
B 3 17 1621 8.41 615 582 123.4
C 3 202 2272 8.04 753 697 195.9
C 1 81 2151 7.42 753 697 195.9
C 1 80 2149 7.41 753 697 195.9
D 8 176 1942 7.16 670 606 186.7
D 10 189 1736 6.05 670 606 186.7
D 4 12 1724 5.99 670 606 186.7

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