ASTROSAT CZTI

Data Quality Report

Orbit 21229

Creation date: 2024-06-27T18:25:52.935434
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_062T02_9000003138_21229cztM0_level2.evt modeM0/AS1A05_062T02_9000003138_21229cztM0_level2_quad_clean.evt
Size (bytes)610,594,56089,026,560
Size582.3 MB 84.9 MB
Events in quadrant A3,473,027579,757
Events in quadrant B3,311,129587,580
Events in quadrant C3,128,829566,953
Events in quadrant D8,144,518513,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145741
B0137831
C0133261
D0286721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6422711.105575%
B6422791.230146%
C6422911.417004%
D6422101415.789474%

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 7382 6422 4 4 0.05% 0.06%
B 7382 6422 17 17 0.23% 0.26%
C 7382 6422 0 0 0.00% 0.00%
D 7382 6422 765 765 10.36% 11.91%

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 15 236 213110 1303.23 810 795 162.9
A 11 47 55631 336.59 810 795 162.9
A 13 252 50050 302.34 810 795 162.9
B 0 197 102770 660.41 802 782 154.4
B 0 190 31147 196.62 802 782 154.4
B 12 111 18351 113.77 802 782 154.4
C 14 238 123109 676.44 770 773 180.9
C 13 61 5305 25.06 770 773 180.9
C 0 207 3313 14.04 770 773 180.9
D 13 174 3793280 20717.93 754 735 183.1
D 1 52 741200 4045.02 754 735 183.1
D 1 239 615811 3360.04 754 735 183.1

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