ASTROSAT CZTI

Data Quality Report

Orbit 50734

Creation date: 2025-02-13T16:25:12.486398
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_9000006450_50734cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50734cztM0_level2_quad_clean.evt
Size (bytes)658,152,00092,416,320
Size627.7 MB 88.1 MB
Events in quadrant A7,287,694610,675
Events in quadrant B3,738,313687,634
Events in quadrant C7,719,018472,238
Events in quadrant D5,082,660545,187

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016016
B016018
C016416
D016319

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290992649
B0180302078
C0352197772
D0236903777

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136
B0125
C0115
D0103

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69635738.229212%
B70252113.003559%
C6723157523.427041%
D69114125.961511%

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 9207 7195 523 523 5.68% 7.27%
B 9237 7233 62 62 0.67% 0.86%
C 9016 6846 1380 1380 15.31% 20.16%
D 9238 7114 271 271 2.93% 3.81%

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 12 80 2827080 15180.26 744 723 186.2
A 4 4 736630 3952.53 744 723 186.2
A 4 3 149052 796.67 744 723 186.2
B 8 128 172925 1076.22 749 722 160.0
B 3 249 115717 718.69 749 722 160.0
B 5 172 83731 518.78 749 722 160.0
C 15 179 3035824 17423.65 627 621 174.2
C 5 10 913661 5241.32 627 621 174.2
C 9 38 185910 1063.66 627 621 174.2
D 2 226 437423 2228.34 705 679 196.0
D 1 47 389372 1983.17 705 679 196.0
D 2 249 302864 1541.8 705 679 196.0

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