ASTROSAT CZTI

Data Quality Report

Orbit 52989

Creation date: 2025-07-15T12:32:08.747161
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/AS1A13_003T01_9000006486_52989cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52989cztM0_level2_quad_clean.evt
Size (bytes)630,342,72057,124,800
Size601.1 MB 54.5 MB
Events in quadrant A11,431,03849,876
Events in quadrant B2,773,739512,571
Events in quadrant C4,352,422421,875
Events in quadrant D4,391,654397,142

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0445447432
B0134981609
C0185032038
D0185821915

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011410
B011410
C01168
D011410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4720426690.381356%
B50321192.364865%
C49983907.803121%
D50404739.384921%

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 6855 4892 3706 3706 54.06% 75.76%
B 6856 5218 50 50 0.73% 0.96%
C 6856 5197 382 382 5.57% 7.35%
D 6856 5235 375 375 5.47% 7.16%

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 9 191 9617128 164883.6 218 212 58.3
A 15 190 492861 8446.55 218 212 58.3
A 4 249 362004 6202.98 218 212 58.3
B 10 254 275653 2474.75 513 496 111.2
B 10 63 215415 1932.97 513 496 111.2
B 1 255 55220 492.18 513 496 111.2
C 1 241 505799 3756.67 482 479 134.5
C 4 5 500986 3720.89 482 479 134.5
C 9 38 481625 3576.96 482 479 134.5
D 8 176 1339691 9785.85 479 458 136.9
D 2 62 473613 3457.37 479 458 136.9
D 2 153 253663 1850.18 479 458 136.9

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