ASTROSAT CZTI

Data Quality Report

Orbit 58980

Creation date: 2026-08-22T15:42:14.592887
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_004T07_9000006598_58980cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58980cztM0_level2_quad_clean.evt
Size (bytes)757,368,00088,384,320
Size722.3 MB 84.3 MB
Events in quadrant A6,840,513591,714
Events in quadrant B9,752,573454,091
Events in quadrant C3,935,597606,160
Events in quadrant D6,980,404549,915

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249702
B0336562
C0166822
D0254982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A679288813.074205%
B6792293343.183157%
C67924506.625442%
D679277511.410483%

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 7617 6793 674 674 8.85% 9.92%
B 7617 6793 1779 1779 23.36% 26.19%
C 7617 6793 331 331 4.35% 4.87%
D 7617 6793 729 729 9.57% 10.73%

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 14 238 2851118 15702.2 738 719 181.5
A 3 14 1031870 5680.38 738 719 181.5
A 15 233 37515 202.7 738 719 181.5
B 6 255 4158245 31257.94 617 594 133.0
B 3 238 2013377 15132.45 617 594 133.0
B 4 236 526299 3952.34 617 594 133.0
C 12 252 652613 3297.29 721 714 197.7
C 12 2 371065 1873.22 721 714 197.7
C 13 3 35692 176.92 721 714 197.7
D 12 110 3337036 16273.12 726 695 205.0
D 6 239 210698 1024.3 726 695 205.0
D 5 32 133896 649.69 726 695 205.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct