ASTROSAT CZTI

Data Quality Report

Orbit 41966

Creation date: 2024-06-27T22:35:04.270797
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/AS1A12_025T15_9000005726_41966cztM0_level2.fits modeM0/AS1A12_025T15_9000005726_41966cztM0_level2_quad_clean.evt
Size (bytes)325,131,84094,872,960
Size310.1 MB 90.5 MB
Events in quadrant A3,202,337649,446
Events in quadrant B2,589,719676,283
Events in quadrant C2,608,016623,043
Events in quadrant D3,226,729557,126

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129043
B0108812
C0106422
D0130842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5243140.267023%
B524370.133511%
C524330.057219%
D52431993.795537%

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 7247 5244 4 4 0.06% 0.08%
B 7247 5244 4 4 0.06% 0.08%
C 7247 5244 0 0 0.00% 0.00%
D 7247 5244 171 171 2.36% 3.26%

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 543557 4273.6 627 616 127.0
A 2 79 184615 1448.29 627 616 127.0
A 14 250 34971 270.42 627 616 127.0
B 0 190 71335 591.36 626 611 119.6
B 5 255 39308 323.57 626 611 119.6
B 12 111 14779 118.47 626 611 119.6
C 15 214 231980 1651.68 604 609 140.1
C 9 54 15049 103.08 604 609 140.1
C 13 61 4154 25.31 604 609 140.1
D 13 249 535894 3674.59 593 575 145.7
D 12 6 187597 1283.78 593 575 145.7
D 12 250 68077 463.35 593 575 145.7

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