ASTROSAT CZTI

Data Quality Report

Orbit 52124

Creation date: 2025-05-18T09:18:44.554135
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_011T07_9000006470_52124cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52124cztM0_level2_quad_clean.evt
Size (bytes)1,221,960,96082,978,560
Size1.1 GB 79.1 MB
Events in quadrant A4,739,516738,615
Events in quadrant B4,786,798800,590
Events in quadrant C14,205,260403,554
Events in quadrant D20,884,57913,963

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197851
B0196882
C0477671
D0674731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79861842.304032%
B79861652.066116%
C7986397449.762084%
D7986788298.697721%

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 8246 7987 151 151 1.83% 1.89%
B 8246 7987 96 96 1.16% 1.20%
C 8245 7986 3152 3152 38.23% 39.47%
D 8245 7985 7502 7502 90.99% 93.95%

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 7 206 339600 1613.3 838 816 210.0
A 4 3 228118 1082.42 838 816 210.0
A 4 249 142366 674.07 838 816 210.0
B 10 254 343929 1935.34 836 805 177.3
B 4 81 240593 1352.49 836 805 177.3
B 0 216 146084 819.42 836 805 177.3
C 15 224 4691254 26647.58 635 628 176.0
C 15 248 4341471 24660.46 635 628 176.0
C 13 3 592917 3364.81 635 628 176.0
D 15 94 13173246 166848.7 267 254 79.0
D 6 42 5483482 69450.39 267 254 79.0
D 0 18 386118 4887.34 267 254 79.0

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