ASTROSAT CZTI

Data Quality Report

Orbit 52119

Creation date: 2025-05-17T22:38:52.794774
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/AS1C09_011T07_9000006470_52119cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52119cztM0_level2_quad_clean.evt
Size (bytes)891,933,12071,665,920
Size850.6 MB 68.3 MB
Events in quadrant A3,843,019611,138
Events in quadrant B4,715,518632,752
Events in quadrant C7,846,134486,255
Events in quadrant D16,125,4181,127

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155891
B0182581
C0276541
D0522007

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62792073.296703%
B62803966.305732%
C6280156724.952229%
D6279627199.872591%

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 7429 6280 115 115 1.55% 1.83%
B 7430 6281 243 243 3.27% 3.87%
C 7430 6281 1165 1165 15.68% 18.55%
D 7428 6278 6122 6122 82.42% 97.52%

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 3 7 453046 2687.9 673 656 168.3
A 4 3 218637 1295.15 673 656 168.3
A 4 249 177504 1050.75 673 656 168.3
B 5 172 814047 5858.05 656 633 138.9
B 4 171 568271 4088.02 656 633 138.9
B 4 81 144724 1037.72 656 633 138.9
C 15 224 4276673 25865.49 598 594 165.3
C 13 3 579899 3504.15 598 594 165.3
C 0 161 121320 730.26 598 594 165.3
D 15 94 9568737 332193.37 94 89 28.8
D 6 42 5683778 197319.81 94 89 28.8
D 0 18 200281 6950.04 94 89 28.8

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