ASTROSAT CZTI

Data Quality Report

Orbit 20170305_A02_132T01_9000001068_level2

Creation date: 2025-11-09T22:12:22.082617
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/AS1A02_132T01_9000001068cztM0_level2.fits modeM0/AS1A02_132T01_9000001068cztM0_level2_quad_clean.evt
Size (bytes)1,093,703,0401,090,103,040
Size1.0 GB 1.0 GB
Events in quadrant A6,550,2026,470,474
Events in quadrant B6,347,9086,523,730
Events in quadrant C6,550,3806,298,674
Events in quadrant D5,594,0385,644,055

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02432610
B02509520
C02426660
D02766860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024040
B024060
C024060
D024060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11787920021.698352%
B11788323341.979929%
C11788013681.160502%
D11787733932.878424%

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 132738 117880 0 0 0.00% 0.00%
B 132737 117876 0 0 0.00% 0.00%
C 132738 117883 0 0 0.00% 0.00%
D 132737 117857 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 6535 11.37 1702 1579 436.0
A 7 110 5535 9.07 1702 1579 436.0
A 0 30 5015 7.88 1702 1579 436.0
B 2 9 5524 11.6 1674 1583 339.6
B 3 17 4366 8.19 1674 1583 339.6
B 12 226 4345 8.13 1674 1583 339.6
C 1 81 4781 6.91 1731 1593 461.3
C 1 80 4725 6.79 1731 1593 461.3
C 12 241 4493 6.29 1731 1593 461.3
D 6 231 4028 6.0 1597 1444 430.5
D 11 82 3980 5.89 1597 1444 430.5
D 7 5 3967 5.86 1597 1444 430.5

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