ASTROSAT CZTI

Data Quality Report

Orbit 54848

Creation date: 2025-11-17T16:26:55.070210
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_039T06_9000006526_54848cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54848cztM0_level2_quad_clean.evt
Size (bytes)420,065,28083,566,080
Size400.6 MB 79.7 MB
Events in quadrant A2,674,317568,319
Events in quadrant B5,515,073499,121
Events in quadrant C2,974,683540,327
Events in quadrant D3,913,666499,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126001
B0209523
C0134501
D0160551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6059931.534907%
B6058111918.471443%
C60581021.683724%
D60592163.564945%

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 7014 6060 12 12 0.17% 0.20%
B 7013 6059 938 938 13.38% 15.48%
C 7013 6059 42 42 0.60% 0.69%
D 7014 6060 171 171 2.44% 2.82%

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 8 206 59244 364.47 641 624 160.8
A 4 13 36880 225.42 641 624 160.8
A 3 14 28596 173.92 641 624 160.8
B 5 172 2848663 22527.51 588 567 126.4
B 2 249 107344 844.57 588 567 126.4
B 10 247 104108 818.98 588 567 126.4
C 6 223 196858 1145.55 619 614 171.3
C 12 252 79802 462.25 619 614 171.3
C 1 16 61180 353.55 619 614 171.3
D 11 129 454880 2608.94 612 585 174.1
D 8 160 297819 1706.97 612 585 174.1
D 3 12 283399 1624.15 612 585 174.1

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