ASTROSAT CZTI

Data Quality Report

Orbit 59167

Creation date: 2026-09-17T09:47:17.335233
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/AS1T05_271T01_9000006604_59167cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59167cztM0_level2_quad_clean.evt
Size (bytes)613,310,40096,220,800
Size584.9 MB 91.8 MB
Events in quadrant A3,361,197703,709
Events in quadrant B3,638,204750,281
Events in quadrant C3,521,710679,856
Events in quadrant D11,658,194309,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144522
B0154162
C0151522
D0392412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6727500.743273%
B67281352.006540%
C6728640.951249%
D6728370355.038644%

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 9232 6727 19 19 0.21% 0.28%
B 9233 6728 38 38 0.41% 0.56%
C 9233 6729 30 30 0.32% 0.45%
D 9233 6728 3337 3337 36.14% 49.60%

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 15 233 263484 1396.82 765 744 188.1
A 3 14 101364 534.93 765 744 188.1
A 10 251 19818 101.4 765 744 188.1
B 4 171 358556 2212.64 763 734 161.7
B 5 248 105624 648.6 763 734 161.7
B 4 236 89541 549.15 763 734 161.7
C 5 250 156103 747.33 759 753 207.9
C 14 254 145104 694.42 759 753 207.9
C 12 252 88912 424.1 759 753 207.9
D 12 1 7246322 54143.31 469 447 133.8
D 11 129 1264259 9443.58 469 447 133.8
D 2 31 846464 6321.69 469 447 133.8

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