ASTROSAT CZTI

Data Quality Report

Orbit 52559

Creation date: 2025-06-16T14:09:24.466520
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_52559cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52559cztM0_level2_quad_clean.evt
Size (bytes)940,135,68085,273,920
Size896.6 MB 81.3 MB
Events in quadrant A3,593,521664,746
Events in quadrant B8,167,869603,033
Events in quadrant C10,592,557458,009
Events in quadrant D11,893,646357,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162350
B0292212
C0364490
D0402860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71641061.479620%
B7163134418.763088%
C7163236433.002932%
D7163312343.599051%

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 7164 7164 70 70 0.98% 0.98%
B 7163 7163 960 960 13.40% 13.40%
C 7163 7163 2084 2084 29.09% 29.09%
D 7162 7162 2647 2647 36.96% 36.96%

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 12 80 177622 947.26 747 727 186.7
A 4 205 101572 540.02 747 727 186.7
A 15 174 94334 501.26 747 727 186.7
B 10 44 2960207 20340.04 685 661 145.5
B 10 254 1204129 8271.06 685 661 145.5
B 4 170 722552 4961.33 685 661 145.5
C 15 248 5438658 31425.4 629 623 173.0
C 2 12 1268806 7328.6 629 623 173.0
C 13 3 703657 4062.7 629 623 173.0
D 6 42 4443305 28602.54 542 517 155.3
D 2 62 1750450 11266.02 542 517 155.3
D 8 176 1305740 8402.99 542 517 155.3

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