ASTROSAT CZTI

Data Quality Report

Orbit 56098

Creation date: 2026-02-09T18:47:59.435261
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_083T03_9000006548_56098cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56098cztM0_level2_quad_clean.evt
Size (bytes)474,719,04095,160,960
Size452.7 MB 90.8 MB
Events in quadrant A4,433,694591,040
Events in quadrant B3,177,826696,909
Events in quadrant C5,216,012569,681
Events in quadrant D4,236,037566,967

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178972
B0139412
C0200912
D0172092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65475898.996487%
B6547841.283030%
C654765510.004582%
D65472243.421414%

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 7622 6548 397 397 5.21% 6.06%
B 7622 6548 15 15 0.20% 0.23%
C 7622 6548 404 404 5.30% 6.17%
D 7622 6548 145 145 1.90% 2.21%

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 12 115 1279768 7387.79 701 684 173.1
A 15 32 280352 1615.32 701 684 173.1
A 0 8 40902 232.29 701 684 173.1
B 4 21 176067 1144.29 712 685 153.3
B 10 247 31593 201.66 712 685 153.3
B 7 252 28308 180.23 712 685 153.3
C 12 254 2091870 11444.93 664 658 182.7
C 12 252 314586 1718.09 664 658 182.7
C 9 38 128337 698.77 664 658 182.7
D 2 120 508342 2610.11 688 657 194.5
D 5 222 326580 1675.64 688 657 194.5
D 8 129 231443 1186.52 688 657 194.5

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