ASTROSAT CZTI

Data Quality Report

Orbit 54671

Creation date: 2025-11-05T19:08:22.151956
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_066T07_9000006522_54671cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54671cztM0_level2_quad_clean.evt
Size (bytes)534,752,64088,174,080
Size510.0 MB 84.1 MB
Events in quadrant A3,491,211597,882
Events in quadrant B3,267,158648,499
Events in quadrant C3,750,262570,342
Events in quadrant D8,780,277399,363

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150720
B0142710
C0155400
D0305690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65081832.811924%
B65081011.551936%
C65091492.289138%
D6509204931.479490%

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 6508 109 109 1.49% 1.67%
B 7338 6508 54 54 0.74% 0.83%
C 7339 6510 111 111 1.51% 1.71%
D 7338 6508 1828 1828 24.91% 28.09%

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 11 3 382228 2235.04 695 678 170.7
A 5 240 182889 1067.35 695 678 170.7
A 0 8 108127 629.41 695 678 170.7
B 2 249 245624 1646.78 689 664 148.8
B 0 213 135063 903.51 689 664 148.8
B 10 247 83758 558.61 689 664 148.8
C 14 254 226808 1222.56 675 668 185.0
C 4 5 206051 1110.34 675 668 185.0
C 1 241 163247 878.93 675 668 185.0
D 11 129 6055278 36932.47 581 555 163.9
D 2 62 166808 1014.11 581 555 163.9
D 2 249 49481 298.44 581 555 163.9

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