ASTROSAT CZTI

Data Quality Report

Orbit 20191009_A07_006T02_9000003228_level2

Creation date: 2025-12-04T14:35:25.255037
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/AS1A07_006T02_9000003228cztM0_level2.fits modeM0/AS1A07_006T02_9000003228cztM0_level2_quad_clean.evt
Size (bytes)602,377,920498,064,320
Size574.5 MB 475.0 MB
Events in quadrant A3,719,7782,835,330
Events in quadrant B3,567,5602,852,560
Events in quadrant C3,650,3282,747,075
Events in quadrant D3,094,6362,438,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01295480
B01338560
C01267280
D01678670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012460
B012460
C012460
D012460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A613807901.287064%
B6138012722.072336%
C6138010591.725318%
D6138037736.146953%

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 70781 61379 0 0 0.00% 0.00%
B 70781 61365 0 0 0.00% 0.00%
C 70781 61377 0 0 0.00% 0.00%
D 70781 61369 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 3631 11.35 967 906 240.1
A 7 110 3036 8.87 967 906 240.1
A 0 30 2744 7.65 967 906 240.1
B 2 9 2816 10.25 945 904 186.5
B 2 8 2336 7.68 945 904 186.5
B 5 232 2330 7.65 945 904 186.5
C 1 80 2732 7.41 961 896 247.9
C 1 81 2697 7.27 961 896 247.9
C 12 241 2607 6.9 961 896 247.9
D 3 14 2289 6.24 884 807 237.4
D 6 231 2254 6.1 884 807 237.4
D 15 46 2240 6.04 884 807 237.4

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