ASTROSAT CZTI

Data Quality Report

Orbit 20170605_G07_046T01_9000001274_level2

Creation date: 2025-11-14T00:37:22.375026
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/AS1G07_046T01_9000001274cztM0_level2.fits modeM0/AS1G07_046T01_9000001274cztM0_level2_quad_clean.evt
Size (bytes)463,106,880359,366,400
Size441.7 MB 342.7 MB
Events in quadrant A2,795,1261,964,885
Events in quadrant B2,736,5061,991,525
Events in quadrant C2,757,3781,861,202
Events in quadrant D2,425,3441,753,805

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09820
B09860
C09860
D09820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01181810
B01007430
C01004990
D01035440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4811612492.595810%
B482719331.932838%
C482745891.220118%
D482707611.576549%

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 56153 48526 0 0 0.00% 0.00%
B 56153 48621 0 0 0.00% 0.00%
C 56153 48622 0 0 0.00% 0.00%
D 56153 48600 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 2759 11.45 727 680 181.6
A 7 110 2391 9.42 727 680 181.6
A 0 30 2236 8.57 727 680 181.6
B 2 9 2229 10.71 720 683 144.3
B 3 17 1860 8.16 720 683 144.3
B 5 232 1806 7.78 720 683 144.3
C 1 80 2025 7.1 727 672 190.5
C 1 81 1963 6.78 727 672 190.5
C 12 241 1935 6.63 727 672 190.5
D 6 231 1831 6.43 691 626 187.5
D 1 3 1747 5.98 691 626 187.5
D 7 5 1705 5.75 691 626 187.5

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