ASTROSAT CZTI

Data Quality Report

Orbit 29400

Creation date: 2024-06-27T20:03:34.535981
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/AS1A10_101T19_9000004228_29400cztM0_level2.evt modeM0/AS1A10_101T19_9000004228_29400cztM0_level2_quad_clean.evt
Size (bytes)688,397,76083,710,080
Size656.5 MB 79.8 MB
Events in quadrant A3,671,819537,757
Events in quadrant B3,813,150535,883
Events in quadrant C4,490,380521,050
Events in quadrant D8,446,704499,843

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145931
B0149481
C0180441
D0295641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63051422.252181%
B63052824.472641%
C63052273.600317%
D6305175827.882633%

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 7430 6306 7 7 0.09% 0.11%
B 7430 6305 106 106 1.43% 1.68%
C 7430 6306 2 2 0.03% 0.03%
D 7430 6306 1448 1448 19.49% 22.96%

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 1 113 327256 1892.92 865 851 172.4
A 13 254 12414 67.06 865 851 172.4
A 0 13 9389 49.51 865 851 172.4
B 0 229 378757 2372.4 835 814 159.3
B 5 255 73549 456.57 835 814 159.3
B 10 245 37921 232.93 835 814 159.3
C 3 233 1142574 6065.12 818 823 188.2
C 14 238 131723 695.36 818 823 188.2
C 2 114 15147 76.09 818 823 188.2
D 12 33 2829340 15770.77 757 739 179.4
D 8 195 2471956 13778.19 757 739 179.4
D 1 52 173448 962.93 757 739 179.4

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