ASTROSAT CZTI

Data Quality Report

Orbit 52583

Creation date: 2025-06-18T04:08:26.114152
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/AS1C09_011T06_9000006478_52583cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52583cztM0_level2_quad_clean.evt
Size (bytes)807,223,68083,868,480
Size769.8 MB 80.0 MB
Events in quadrant A4,411,067621,550
Events in quadrant B6,182,128632,760
Events in quadrant C7,696,970483,796
Events in quadrant D11,097,180355,029

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176112
B0227923
C0273412
D0374042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63892714.241665%
B63895839.125059%
C6389150723.587416%
D6389283144.310534%

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 7524 6390 230 230 3.06% 3.60%
B 7524 6389 366 366 4.86% 5.73%
C 7524 6389 1442 1442 19.17% 22.57%
D 7524 6389 2842 2842 37.77% 44.48%

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 12 80 811633 4692.22 679 662 172.8
A 4 249 456265 2636.08 679 662 172.8
A 5 243 108179 622.09 679 662 172.8
B 10 254 2566846 18451.31 656 637 139.1
B 1 238 318495 2285.43 656 637 139.1
B 4 81 196553 1408.66 656 637 139.1
C 15 248 4374653 26152.25 601 593 167.3
C 15 224 374314 2234.46 601 593 167.3
C 13 3 267024 1592.98 601 593 167.3
D 6 42 5060628 31845.63 546 519 158.9
D 8 176 1857241 11685.22 546 519 158.9
D 15 125 976210 6140.48 546 519 158.9

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