ASTROSAT CZTI

Data Quality Report

Orbit 52556

Creation date: 2025-06-17T10:51:23.821091
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/AS1C09_011T06_9000006478_52556cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52556cztM0_level2_quad_clean.evt
Size (bytes)611,424,00091,192,320
Size583.1 MB 87.0 MB
Events in quadrant A3,321,520626,560
Events in quadrant B5,536,586650,043
Events in quadrant C5,048,769568,879
Events in quadrant D8,215,089455,743

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149692
B0210232
C0198482
D0290362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65931111.683604%
B65934146.279387%
C65935468.281511%
D6594147822.414316%

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 7738 6595 103 103 1.33% 1.56%
B 7738 6595 230 230 2.97% 3.49%
C 7738 6595 443 443 5.72% 6.72%
D 7739 6596 1305 1305 16.86% 19.78%

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 80 327821 1925.45 677 659 169.9
A 13 248 65806 383.41 677 659 169.9
A 4 159 63233 368.27 677 659 169.9
B 4 170 1150245 8222.78 662 640 139.8
B 10 254 646519 4619.78 662 640 139.8
B 10 44 498542 3561.34 662 640 139.8
C 15 224 899629 5092.96 639 634 176.5
C 15 248 608156 3441.72 639 634 176.5
C 13 3 367507 2078.4 639 634 176.5
D 6 42 2454818 14506.61 585 558 169.2
D 8 176 772390 4562.13 585 558 169.2
D 12 17 566165 3343.18 585 558 169.2

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