ASTROSAT CZTI

Data Quality Report

Orbit 57665

Creation date: 2026-05-26T05:24:43.104407
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_125T09_9000006578_57665cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57665cztM0_level2_quad_clean.evt
Size (bytes)448,473,60093,648,960
Size427.7 MB 89.3 MB
Events in quadrant A2,787,363637,521
Events in quadrant B3,213,204670,158
Events in quadrant C4,209,597585,332
Events in quadrant D5,877,064482,282

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133672
B0143812
C0173362
D0222362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6603300.454339%
B66031832.771468%
C66032734.134484%
D6603101615.386945%

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 7543 6603 0 0 0.00% 0.00%
B 7543 6604 82 82 1.09% 1.24%
C 7543 6604 191 191 2.53% 2.89%
D 7543 6604 992 992 13.15% 15.02%

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 3 137 8762 45.59 715 694 177.0
A 3 128 8076 41.72 715 694 177.0
A 4 3 7372 37.74 715 694 177.0
B 10 16 227005 1505.85 699 671 150.3
B 5 172 91802 606.32 699 671 150.3
B 5 185 33103 215.78 699 671 150.3
C 15 224 1404888 7619.9 677 671 184.3
C 12 254 61284 328.91 677 671 184.3
C 14 254 60375 323.98 677 671 184.3
D 8 240 2927504 16307.34 628 599 179.5
D 2 249 118620 657.56 628 599 179.5
D 3 12 116774 647.27 628 599 179.5

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