ASTROSAT CZTI

Data Quality Report

Orbit 57480

Creation date: 2026-05-13T17:41:51.408627
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_57480cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57480cztM0_level2_quad_clean.evt
Size (bytes)466,344,00096,022,080
Size444.7 MB 91.6 MB
Events in quadrant A2,899,675650,064
Events in quadrant B4,173,872672,730
Events in quadrant C4,921,287594,257
Events in quadrant D4,768,801542,412

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131951
B0166531
C0191554
D0185311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6416610.950748%
B64173615.625682%
C64164366.795511%
D64165688.852868%

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 7566 6416 2 2 0.03% 0.03%
B 7567 6417 204 204 2.70% 3.18%
C 7566 6417 340 340 4.49% 5.30%
D 7566 6417 470 470 6.21% 7.32%

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 10 251 55818 307.43 724 706 179.3
A 4 3 15115 80.38 724 706 179.3
A 7 14 13567 71.74 724 706 179.3
B 4 206 1085183 7397.98 692 667 146.6
B 5 185 93142 630.81 692 667 146.6
B 0 245 54340 366.13 692 667 146.6
C 15 224 1840935 9967.54 679 673 184.6
C 14 254 157298 848.34 679 673 184.6
C 12 2 124257 669.38 679 673 184.6
D 2 249 1210796 6328.59 677 647 191.2
D 15 142 391981 2046.52 677 647 191.2
D 8 240 140782 732.85 677 647 191.2

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