ASTROSAT CZTI

Data Quality Report

Orbit 52211

Creation date: 2025-06-20T12:27:35.895335
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_011T08_9000006472_52211cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52211cztM0_level2_quad_clean.evt
Size (bytes)1,067,783,04077,999,040
Size1018.3 MB 74.4 MB
Events in quadrant A4,883,391651,622
Events in quadrant B7,285,709663,897
Events in quadrant C9,913,511442,373
Events in quadrant D16,885,083100,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196180
B0266920
C0344716
D0551010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72233614.997923%
B722386011.906410%
C7222260236.028801%
D7222623286.291886%

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 7223 7223 266 266 3.68% 3.68%
B 7223 7223 648 648 8.97% 8.97%
C 7221 7221 1893 1893 26.22% 26.22%
D 7222 7222 5841 5841 80.88% 80.88%

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 14 254 1323910 7001.0 748 728 189.0
A 12 3 120838 635.51 748 728 189.0
A 3 145 73734 386.28 748 728 189.0
B 5 32 2000086 13008.2 726 700 153.7
B 10 254 1553382 10101.9 726 700 153.7
B 4 81 126165 816.28 726 700 153.7
C 15 224 4306173 25626.21 599 593 168.0
C 15 231 1616329 9616.63 599 593 168.0
C 13 3 640378 3807.91 599 593 168.0
D 6 42 11601959 120471.79 333 317 96.3
D 15 93 1543414 16023.56 333 317 96.3
D 7 222 667208 6925.02 333 317 96.3

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