ASTROSAT CZTI

Data Quality Report

Orbit 53560

Creation date: 2025-08-22T23:06:49.916792
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_004T05_9000006502_53560cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53560cztM0_level2_quad_clean.evt
Size (bytes)902,594,88074,062,080
Size860.8 MB 70.6 MB
Events in quadrant A9,218,163458,551
Events in quadrant B3,449,762674,667
Events in quadrant C7,775,689488,486
Events in quadrant D12,463,809166,415

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318391
B0147641
C0275951
D0414911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6503214933.046286%
B6504831.276138%
C6504144722.247847%
D6504479373.693112%

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 7338 6505 1950 1950 26.57% 29.98%
B 7339 6506 40 40 0.55% 0.61%
C 7339 6506 1403 1403 19.12% 21.56%
D 7339 6506 3502 3502 47.72% 53.83%

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 63 2690812 17444.74 611 595 154.2
A 15 174 1846452 11969.48 611 595 154.2
A 3 62 861360 5581.64 611 595 154.2
B 10 247 155258 1039.54 694 670 148.7
B 0 213 147925 990.23 694 670 148.7
B 15 20 101464 677.8 694 670 148.7
C 15 224 2139391 12703.06 612 608 168.4
C 1 241 1819052 10800.45 612 608 168.4
C 12 252 498399 2956.57 612 608 168.4
D 8 176 10372326 114449.76 303 289 90.6
D 3 12 422853 4662.76 303 289 90.6
D 2 120 74808 822.27 303 289 90.6

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