ASTROSAT CZTI

Data Quality Report

Orbit 54475

Creation date: 2025-10-23T13:32:27.297986
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/AS1A14_126T19_9000006518_54475cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54475cztM0_level2_quad_clean.evt
Size (bytes)729,048,96084,029,760
Size695.3 MB 80.1 MB
Events in quadrant A3,070,011647,681
Events in quadrant B4,559,827664,731
Events in quadrant C4,702,993595,877
Events in quadrant D14,113,452151,474

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145392
B0186232
C0190772
D0466972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6952801.150748%
B69513865.553158%
C69523695.307825%
D6952537377.287112%

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 7737 6954 38 38 0.49% 0.55%
B 7736 6952 284 284 3.67% 4.09%
C 7737 6952 291 291 3.76% 4.19%
D 7737 6953 4388 4388 56.71% 63.11%

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 4 249 115326 639.07 726 708 179.4
A 11 3 35392 193.39 726 708 179.4
A 4 3 31209 170.06 726 708 179.4
B 5 172 1099862 7344.53 698 674 149.7
B 0 213 420372 2804.33 698 674 149.7
B 5 185 220571 1469.3 698 674 149.7
C 12 2 1153985 6126.77 683 676 188.2
C 7 64 386931 2051.92 683 676 188.2
C 1 241 117474 620.47 683 676 188.2
D 8 176 12451923 145266.48 297 283 85.7
D 8 160 219621 2558.9 297 283 85.7
D 3 12 76063 884.08 297 283 85.7

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