ASTROSAT CZTI

Data Quality Report

Orbit 57498

Creation date: 2026-05-15T10:43:33.585540
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_113T09_9000006574_57498cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57498cztM0_level2_quad_clean.evt
Size (bytes)465,652,80094,504,320
Size444.1 MB 90.1 MB
Events in quadrant A2,857,418632,032
Events in quadrant B5,264,194627,437
Events in quadrant C3,933,724588,973
Events in quadrant D4,667,061551,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136081
B0203511
C0165651
D0184221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6617300.453378%
B661870210.607434%
C66182233.369598%
D66183224.865518%

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 7217 6618 1 1 0.01% 0.02%
B 7218 6619 417 417 5.78% 6.30%
C 7218 6619 194 194 2.69% 2.93%
D 7218 6619 329 329 4.56% 4.97%

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 13 248 71697 405.39 712 694 175.1
A 10 251 18415 101.18 712 694 175.1
A 4 3 9674 51.27 712 694 175.1
B 4 206 1985834 13703.4 677 651 144.9
B 0 213 273612 1884.21 677 651 144.9
B 5 185 135272 929.27 677 651 144.9
C 15 224 975190 5268.64 676 669 185.0
C 14 254 131476 707.19 676 669 185.0
C 13 16 82726 443.63 676 669 185.0
D 15 142 1136350 5932.11 673 641 191.5
D 8 240 487231 2541.59 673 641 191.5
D 2 31 158228 823.12 673 641 191.5

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