ASTROSAT CZTI

Data Quality Report

Orbit 20181231_T03_071T01_9000002610_level2

Creation date: 2024-11-14T18:16:13.242332
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/AS1T03_071T01_9000002610cztM0_level2.fits modeM0/AS1T03_071T01_9000002610cztM0_level2_quad_clean.evt
Size (bytes)622,514,880546,788,160
Size593.7 MB 521.5 MB
Events in quadrant A3,850,9963,186,295
Events in quadrant B3,666,0643,158,250
Events in quadrant C3,681,8462,981,653
Events in quadrant D3,220,5202,799,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01368960
B01344750
C01464950
D01632640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013180
B013180
C013180
D013180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A646456881.064274%
B646456751.044164%
C6464510671.650553%
D6464515962.468868%

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 74780 64643 0 0 0.00% 0.00%
B 74780 64639 0 0 0.00% 0.00%
C 74780 64641 0 0 0.00% 0.00%
D 74780 64640 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 3578 10.53 1001 939 250.5
A 7 110 3105 8.64 1001 939 250.5
A 9 19 2894 7.8 1001 939 250.5
B 2 9 2913 10.37 969 926 191.6
B 2 8 2522 8.33 969 926 191.6
B 14 254 2446 7.93 969 926 191.6
C 12 241 2573 6.7 972 905 248.7
C 3 126 2476 6.31 972 905 248.7
C 2 191 2467 6.28 972 905 248.7
D 3 14 2390 6.36 919 837 244.1
D 6 67 2327 6.1 919 837 244.1
D 7 3 2299 5.99 919 837 244.1

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