ASTROSAT CZTI

Data Quality Report

Orbit 54399

Creation date: 2025-10-18T10:09:23.514068
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_54399cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54399cztM0_level2_quad_clean.evt
Size (bytes)600,747,84087,716,160
Size572.9 MB 83.7 MB
Events in quadrant A2,865,503628,211
Events in quadrant B3,145,757677,004
Events in quadrant C4,303,726570,860
Events in quadrant D11,425,326333,009

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135052
B0140582
C0175522
D0383872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6405470.733802%
B6405981.530055%
C64054497.010148%
D6405285144.512100%

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 7570 6406 31 31 0.41% 0.48%
B 7570 6406 59 59 0.78% 0.92%
C 7570 6405 397 397 5.24% 6.20%
D 7570 6405 2473 2473 32.67% 38.61%

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 12 15 152328 890.5 682 664 170.3
A 3 62 19218 108.94 682 664 170.3
A 3 14 14383 80.55 682 664 170.3
B 10 14 229607 1577.74 679 655 145.1
B 4 81 90225 617.24 679 655 145.1
B 4 171 43240 293.46 679 655 145.1
C 1 241 1064949 5951.89 641 633 178.8
C 4 5 440856 2461.82 641 633 178.8
C 14 254 84863 471.03 641 633 178.8
D 8 176 3681564 23413.99 543 518 157.2
D 2 172 2639447 16785.41 543 518 157.2
D 2 62 2420483 15392.65 543 518 157.2

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