ASTROSAT CZTI

Data Quality Report

Orbit 43774

Creation date: 2024-06-27T22:55:37.395598
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_026T01_9000005904_43774cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43774cztM0_level2_quad_clean.evt
Size (bytes)705,510,72091,774,080
Size672.8 MB 87.5 MB
Events in quadrant A4,862,207660,422
Events in quadrant B5,958,940630,084
Events in quadrant C7,949,878527,578
Events in quadrant D6,866,795529,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189341
B0218621
C0277921
D0245801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140416161044520140415365808174
B0-1-1
C0-1-1
D0-1-1

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61753615.846154%
B617599716.145749%
C6175166426.947368%
D6175105817.133603%

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 7180 6176 206 206 2.87% 3.34%
B 7180 6176 647 647 9.01% 10.48%
C 7180 6176 1500 1500 20.89% 24.29%
D 7180 6175 912 912 12.70% 14.77%

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 894156 6089.71 704 690 146.7
A 15 223 791572 5390.52 704 690 146.7
A 14 63 147992 1003.99 704 690 146.7
B 0 200 1574884 11654.65 686 667 135.1
B 3 96 607022 4489.12 686 667 135.1
B 5 235 485966 3592.89 686 667 135.1
C 15 174 4418963 29220.89 641 646 151.2
C 15 158 589469 3894.23 641 646 151.2
C 14 96 119295 784.69 641 646 151.2
D 12 33 1480846 8724.6 658 636 169.7
D 5 235 1052084 6197.41 658 636 169.7
D 4 233 650881 3832.65 658 636 169.7

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