ASTROSAT CZTI

Data Quality Report

Orbit 20190605_A05_160T01_9000002970_level2

Creation date: 2025-12-01T06:42:35.397409
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/AS1A05_160T01_9000002970cztM0_level2.fits modeM0/AS1A05_160T01_9000002970cztM0_level2_quad_clean.evt
Size (bytes)1,402,891,2001,243,825,920
Size1.3 GB 1.2 GB
Events in quadrant A8,417,2807,089,248
Events in quadrant B8,373,3187,469,496
Events in quadrant C8,490,1726,911,438
Events in quadrant D7,496,9466,497,053

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028900
B028840
C028800
D028840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03827640
B03110510
C03596720
D03441630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02290
B02290
C02300
D02280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141525121618.592828%
B14161124311.716675%
C14162061904.370852%
D14155449353.486302%

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 165807 140852 0 0 0.00% 0.00%
B 165807 141862 0 0 0.00% 0.00%
C 165807 141645 0 0 0.00% 0.00%
D 165807 141722 0 0 0.00% 0.00%

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 29 7944 11.02 2190 2054 534.3
A 7 110 6754 8.8 2190 2054 534.3
A 9 19 6298 7.94 2190 2054 534.3
B 2 9 6740 10.73 2217 2114 430.9
B 2 8 5648 8.2 2217 2114 430.9
B 5 128 5475 7.8 2217 2114 430.9
C 1 80 6380 7.6 2238 2097 563.8
C 1 81 6256 7.38 2238 2097 563.8
C 12 241 6029 6.97 2238 2097 563.8
D 3 14 5393 6.13 2144 1961 560.2
D 7 3 5236 5.85 2144 1961 560.2
D 6 67 5212 5.8 2144 1961 560.2

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