ASTROSAT CZTI

Data Quality Report

Orbit 01172

Creation date: 2024-06-27T14:08:37.664384
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/AS1P01_997T02_9000000218_01172cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01172cztM0_level2_quad_clean.evt
Size (bytes)1,313,910,72089,115,840
Size1.2 GB 85.0 MB
Events in quadrant A7,039,834625,605
Events in quadrant B7,923,459627,259
Events in quadrant C6,835,960600,197
Events in quadrant D17,603,594431,456

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251042
B0276931
C0244871
D0571921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5903110.186346%
B5903310.525157%
C590340.067762%
D5903454176.926986%

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 7173 5904 186 186 2.59% 3.15%
B 7173 5904 337 337 4.70% 5.71%
C 7173 5904 139 139 1.94% 2.35%
D 7173 5904 5863 5863 81.74% 99.31%

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 12 243 46759 104.4 1810 1822 430.4
A 4 32 43734 97.37 1810 1822 430.4
A 11 79 7858 14.02 1810 1822 430.4
B 2 32 625518 1416.25 1874 1885 440.3
B 5 191 64041 141.15 1874 1885 440.3
B 6 53 38576 83.32 1874 1885 440.3
C 15 241 273437 590.32 1661 1714 460.3
C 9 83 36349 75.25 1661 1714 460.3
C 3 111 19376 38.37 1661 1714 460.3
D 1 239 12392663 30054.95 1353 1398 412.3
D 10 125 40719 95.37 1353 1398 412.3
D 13 25 32118 74.51 1353 1398 412.3

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