ASTROSAT CZTI

Data Quality Report

Orbit 46544

Creation date: 2024-06-27T23:24:31.236384
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/AS1A13_091T08_9000006228_46544cztM0_level2.fits modeM0/AS1A13_091T08_9000006228_46544cztM0_level2_quad_clean.evt
Size (bytes)512,907,840107,997,120
Size489.1 MB 103.0 MB
Events in quadrant A6,719,194704,880
Events in quadrant B3,205,921743,154
Events in quadrant C3,480,025711,828
Events in quadrant D5,056,755639,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244382
B0141422
C0148982
D0198372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67612804.141399%
B6762620.916888%
C67621001.478852%
D67613354.954888%

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 8666 6761 130 130 1.50% 1.92%
B 8667 6762 8 8 0.09% 0.12%
C 8667 6763 75 75 0.87% 1.11%
D 8666 6762 275 275 3.17% 4.07%

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 10 83 3342126 21609.85 744 729 154.6
A 9 191 342975 2213.41 744 729 154.6
A 14 235 39250 249.13 744 729 154.6
B 3 112 72376 477.7 752 730 150.0
B 5 32 41668 272.96 752 730 150.0
B 0 245 30926 201.33 752 730 150.0
C 9 54 452338 2575.43 743 746 175.3
C 14 254 73042 412.3 743 746 175.3
C 2 14 22294 122.89 743 746 175.3
D 1 52 957857 5165.05 728 704 185.3
D 2 37 530632 2859.63 728 704 185.3
D 13 249 243095 1308.0 728 704 185.3

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