ASTROSAT CZTI

Data Quality Report

Orbit 58660

Creation date: 2026-08-01T03:11:43.741460
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_004T06_9000006594_58660cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58660cztM0_level2_quad_clean.evt
Size (bytes)542,292,48087,459,840
Size517.2 MB 83.4 MB
Events in quadrant A3,330,873602,096
Events in quadrant B2,888,775651,641
Events in quadrant C4,000,350582,821
Events in quadrant D9,373,234379,680

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014953524
B013384305
C016399314
D0338251756

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01282
B01282
C01282
D01284

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6195701.129944%
B6224350.562339%
C62291592.552577%
D6092210834.602758%

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 7638 6305 46 46 0.60% 0.73%
B 7635 6315 4 4 0.05% 0.06%
C 7643 6334 107 107 1.40% 1.69%
D 7639 6170 2084 2084 27.28% 33.78%

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 17 518535 3084.97 676 660 167.9
A 3 14 91356 540.27 676 660 167.9
A 4 249 48478 284.85 676 660 167.9
B 0 186 52331 360.26 673 648 143.5
B 0 171 40675 279.01 673 648 143.5
B 8 234 34826 238.24 673 648 143.5
C 15 217 878239 4795.91 663 657 183.0
C 15 164 134382 730.8 663 657 183.0
C 12 252 133970 728.54 663 657 183.0
D 11 129 4091317 25983.5 547 522 157.4
D 8 240 1967856 12495.91 547 522 157.4
D 8 160 932130 5917.29 547 522 157.4

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