ASTROSAT CZTI

Data Quality Report

Orbit 26679

Creation date: 2024-06-27T19:31:41.997033
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/AS1A09_145T01_9000003848_26679cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26679cztM0_level2_quad_clean.evt
Size (bytes)548,360,64078,955,200
Size523.0 MB 75.3 MB
Events in quadrant A3,514,639498,474
Events in quadrant B3,733,226498,532
Events in quadrant C3,502,443475,610
Events in quadrant D5,413,573462,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141360
B0147900
C0139890
D0200380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6549650.992518%
B6550941.435115%
C65501081.648855%
D65506039.206107%

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 7664 6550 3 3 0.04% 0.05%
B 7665 6551 27 27 0.35% 0.41%
C 7665 6551 5 5 0.07% 0.08%
D 7665 6551 534 534 6.97% 8.15%

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 0 13 99283 562.15 885 870 175.1
A 13 254 11172 58.84 885 870 175.1
A 0 226 7719 39.12 885 870 175.1
B 10 246 149448 919.25 865 847 161.7
B 15 36 75581 462.31 865 847 161.7
B 0 189 30385 182.72 865 847 161.7
C 14 238 135434 684.66 838 844 196.6
C 3 233 46704 233.29 838 844 196.6
C 15 208 26909 132.59 838 844 196.6
D 12 233 992996 5015.19 823 804 197.8
D 7 80 889578 4492.45 823 804 197.8
D 1 52 117852 591.64 823 804 197.8

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