ASTROSAT CZTI

Data Quality Report

Orbit 51166

Creation date: 2025-03-15T09:03:57.369840
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/AS1C07_001T01_9000006454_51166cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51166cztM0_level2_quad_clean.evt
Size (bytes)1,288,532,16068,932,800
Size1.2 GB 65.7 MB
Events in quadrant A12,842,866446,855
Events in quadrant B8,173,588489,319
Events in quadrant C8,756,191525,930
Events in quadrant D17,372,105123,837

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0431185
B0292560
C0310060
D0565610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7187281739.195770%
B7187244934.075414%
C7187150820.982329%
D7187607384.499791%

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 7186 7186 2697 2697 37.53% 37.53%
B 7187 7187 1168 1168 16.25% 16.25%
C 7187 7187 1418 1418 19.73% 19.73%
D 7186 7186 6341 6341 88.24% 88.24%

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 4 4 4667445 28223.15 661 644 165.4
A 12 80 1906823 11527.89 661 644 165.4
A 4 207 812139 4907.63 661 644 165.4
B 12 32 4128952 30297.16 631 610 136.3
B 10 60 386799 2834.17 631 610 136.3
B 5 185 301111 2205.32 631 610 136.3
C 15 157 2398506 13123.97 659 654 182.7
C 12 247 1063060 5814.78 659 654 182.7
C 4 13 847237 4633.53 659 654 182.7
D 8 176 14065586 102807.69 479 460 136.8
D 6 42 277815 2027.3 479 460 136.8
D 15 108 211930 1545.72 479 460 136.8

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