ASTROSAT CZTI

Data Quality Report

Orbit 20170415_A03_036T01_9000001164_level2

Creation date: 2025-11-11T11:52:45.615345
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/AS1A03_036T01_9000001164cztM0_level2.fits modeM0/AS1A03_036T01_9000001164cztM0_level2_quad_clean.evt
Size (bytes)541,039,680584,974,080
Size516.0 MB 557.9 MB
Events in quadrant A3,245,5383,557,364
Events in quadrant B3,208,4143,694,137
Events in quadrant C3,232,0923,433,383
Events in quadrant D2,784,7283,118,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011640
B011620
C011640
D011640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300640
B01221370
C01182610
D01395490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5703823954.198955%
B570389941.742698%
C570395871.029120%
D5703521813.823968%

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 66168 57027 0 0 0.00% 0.00%
B 66168 57042 0 0 0.00% 0.00%
C 66168 57041 0 0 0.00% 0.00%
D 66168 57037 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 3157 11.27 846 792 209.9
A 7 110 2809 9.61 846 792 209.9
A 9 19 2482 8.05 846 792 209.9
B 2 9 2724 11.64 845 805 164.8
B 12 226 2188 8.39 845 805 164.8
B 5 128 2146 8.14 845 805 164.8
C 1 81 2368 7.0 853 792 225.0
C 12 241 2307 6.73 853 792 225.0
C 1 80 2307 6.73 853 792 225.0
D 6 231 1986 5.93 794 722 213.0
D 1 19 1977 5.89 794 722 213.0
D 1 3 1941 5.72 794 722 213.0

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