ASTROSAT CZTI

Data Quality Report

Orbit 20180302_G08_031T02_9000001934_level2

Creation date: 2025-11-19T20:01:24.643822
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/AS1G08_031T02_9000001934cztM0_level2.fits modeM0/AS1G08_031T02_9000001934cztM0_level2_quad_clean.evt
Size (bytes)401,541,120410,365,440
Size382.9 MB 391.4 MB
Events in quadrant A2,483,8282,501,994
Events in quadrant B2,249,8542,379,966
Events in quadrant C2,484,2342,477,956
Events in quadrant D1,917,3962,047,921

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0961210
B01273010
C0897500
D01517400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08960
B08960
C08960
D08960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A439896111.388984%
B43989523811.907522%
C439891150.261429%
D43989769717.497556%

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 52815 43983 0 0 0.00% 0.00%
B 52815 43377 0 0 0.00% 0.00%
C 52815 43989 0 0 0.00% 0.00%
D 52815 43922 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 2362 10.96 646 609 159.9
A 7 110 2016 8.8 646 609 159.9
A 9 19 1834 7.66 646 609 159.9
B 2 9 1923 11.61 594 571 116.4
B 14 254 1539 8.31 594 571 116.4
B 3 17 1481 7.82 594 571 116.4
C 1 81 1876 7.44 655 613 169.7
C 1 80 1868 7.4 655 613 169.7
C 12 241 1729 6.58 655 613 169.7
D 6 231 1391 6.07 547 499 147.0
D 7 3 1382 6.01 547 499 147.0
D 10 113 1358 5.84 547 499 147.0

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