ASTROSAT CZTI

Data Quality Report

Orbit 18782

Creation date: 2024-06-27T17:55:04.570257
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/AS1A05_088T03_9000002808_18782cztM0_level2.evt modeM0/AS1A05_088T03_9000002808_18782cztM0_level2_quad_clean.evt
Size (bytes)126,567,36023,486,400
Size120.7 MB 22.4 MB
Events in quadrant A885,358148,612
Events in quadrant B914,243150,557
Events in quadrant C870,666145,721
Events in quadrant D1,045,905142,187

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036891
B037741
C036101
D041891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113977364764967246
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1680362.142857%
B1680492.916667%
C1680593.511905%
D1680492.916667%

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 1680 1680 0 0 0.00% 0.00%
B 1680 1680 5 5 0.30% 0.30%
C 1680 1680 0 0 0.00% 0.00%
D 1680 1680 20 20 1.19% 1.19%

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 6 16 43791 938.99 217 212 46.4
A 13 254 2828 56.37 217 212 46.4
A 0 226 1952 37.49 217 212 46.4
B 0 197 24170 544.01 218 213 44.0
B 7 220 21926 493.05 218 213 44.0
B 12 111 5100 110.97 218 213 44.0
C 14 238 32239 613.1 212 212 52.2
C 6 96 7575 140.95 212 212 52.2
C 5 112 2754 48.66 212 212 52.2
D 1 52 195106 3636.95 212 205 53.6
D 13 172 11491 210.6 212 205 53.6
D 2 234 8030 146.02 212 205 53.6

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