ASTROSAT CZTI

Data Quality Report

Orbit 20181101_A05_059T07_9000002480_level2

Creation date: 2025-11-25T14:42:41.239093
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_059T07_9000002480cztM0_level2.fits modeM0/AS1A05_059T07_9000002480cztM0_level2_quad_clean.evt
Size (bytes)170,392,320232,456,320
Size162.5 MB 221.7 MB
Events in quadrant A995,5121,432,268
Events in quadrant B987,0081,519,018
Events in quadrant C1,014,9781,463,469
Events in quadrant D877,3861,340,611

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0524160
B0412600
C0391390
D0434880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1865713957.477086%
B186573651.956370%
C186572751.473978%
D186574932.642440%

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 20447 18649 0 0 0.00% 0.00%
B 20447 18656 0 0 0.00% 0.00%
C 20447 18656 0 0 0.00% 0.00%
D 20447 18655 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 29 929 10.21 259 242 67.3
A 7 110 766 7.79 259 242 67.3
A 0 30 751 7.57 259 242 67.3
B 2 9 824 10.8 261 249 53.3
B 2 8 694 8.36 261 249 53.3
B 3 17 690 8.28 261 249 53.3
C 1 80 774 7.48 267 249 70.1
C 1 81 752 7.17 267 249 70.1
C 12 241 704 6.48 267 249 70.1
D 3 14 723 7.28 249 227 68.1
D 6 231 630 5.92 249 227 68.1
D 3 30 616 5.71 249 227 68.1

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