ASTROSAT CZTI

Data Quality Report

Orbit 20201221_A10_102T10_9000004080_level2

Creation date: 2025-12-18T20:11:19.464139
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_102T10_9000004080cztM0_level2.fits modeM0/AS1A10_102T10_9000004080cztM0_level2_quad_clean.evt
Size (bytes)1,300,694,4001,235,592,000
Size1.2 GB 1.2 GB
Events in quadrant A8,048,9967,431,450
Events in quadrant B7,738,6827,446,612
Events in quadrant C7,935,2987,189,301
Events in quadrant D6,617,3946,305,848

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02795490
B02964640
C02762870
D04209280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026820
B026820
C026820
D026820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13205118041.366139%
B13205130802.332432%
C13205121831.653149%
D132051111528.445222%

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 151791 132044 0 0 0.00% 0.00%
B 151791 132032 0 0 0.00% 0.00%
C 151791 132044 0 0 0.00% 0.00%
D 151791 131826 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 7542 10.97 2094 1975 507.3
A 7 110 6592 9.1 2094 1975 507.3
A 0 30 5990 7.91 2094 1975 507.3
B 2 9 6234 10.56 2049 1956 405.3
B 2 8 5212 8.03 2049 1956 405.3
B 5 128 5169 7.93 2049 1956 405.3
C 1 80 6203 8.09 2095 1971 523.2
C 1 81 6182 8.05 2095 1971 523.2
C 12 241 5695 7.12 2095 1971 523.2
D 7 3 4881 6.34 1886 1717 499.3
D 6 231 4739 6.05 1886 1717 499.3
D 3 14 4665 5.9 1886 1717 499.3

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