ASTROSAT CZTI

Data Quality Report

Orbit 20161023_G06_089T01_9000000746_level2

Creation date: 2025-11-07T03:12:28.089600
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/AS1G06_089T01_9000000746cztM0_level2.fits modeM0/AS1G06_089T01_9000000746cztM0_level2_quad_clean.evt
Size (bytes)551,986,560567,521,280
Size526.4 MB 541.2 MB
Events in quadrant A3,316,5683,413,255
Events in quadrant B3,261,2503,491,350
Events in quadrant C3,284,8043,290,022
Events in quadrant D2,796,1882,936,438

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01376030
B01247700
C01221400
D01434670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012060
B012060
C012060
D012060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5913617082.888258%
B5914010501.775448%
C591395610.948613%
D5912822363.781626%

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 67638 59148 0 0 0.00% 0.00%
B 67638 59153 0 0 0.00% 0.00%
C 67638 59154 0 0 0.00% 0.00%
D 67638 59149 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 3228 10.99 864 806 220.3
A 7 110 2848 9.27 864 806 220.3
A 0 30 2501 7.69 864 806 220.3
B 2 9 2795 11.4 860 818 173.4
B 12 226 2269 8.37 860 818 173.4
B 5 128 2241 8.2 860 818 173.4
C 12 241 2335 6.62 867 803 231.5
C 1 80 2289 6.42 867 803 231.5
C 1 81 2278 6.37 867 803 231.5
D 6 231 2102 6.37 798 721 216.7
D 11 82 2095 6.34 798 721 216.7
D 3 14 2045 6.11 798 721 216.7

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