ASTROSAT CZTI

Data Quality Report

Orbit 55619

Creation date: 2026-01-09T18:32:00.863099
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_021T06_9000006538_55619cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55619cztM0_level2_quad_clean.evt
Size (bytes)422,095,68093,634,560
Size402.5 MB 89.3 MB
Events in quadrant A4,767,424592,072
Events in quadrant B2,895,221668,351
Events in quadrant C3,730,302577,240
Events in quadrant D3,727,933545,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186522
B0135012
C0160462
D0159092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64753825.899614%
B6475450.694981%
C64752363.644788%
D64751472.270270%

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 7580 6476 318 318 4.20% 4.91%
B 7580 6476 9 9 0.12% 0.14%
C 7580 6476 215 215 2.84% 3.32%
D 7580 6476 127 127 1.68% 1.96%

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 15 32 2024267 12484.42 659 643 162.1
A 3 14 79304 485.29 659 643 162.1
A 8 249 35661 216.04 659 643 162.1
B 5 185 63382 435.98 669 643 143.9
B 7 0 56898 390.92 669 643 143.9
B 10 247 20304 136.63 669 643 143.9
C 13 3 527733 2990.25 643 635 176.3
C 9 38 226567 1281.72 643 635 176.3
C 6 223 197813 1118.6 643 635 176.3
D 8 160 299816 1643.68 640 611 182.0
D 11 129 206673 1132.0 640 611 182.0
D 15 125 204668 1120.98 640 611 182.0

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