ASTROSAT CZTI

Data Quality Report

Orbit 52627

Creation date: 2025-06-24T12:58:48.062382
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_52627cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52627cztM0_level2_quad_clean.evt
Size (bytes)740,093,76079,542,720
Size705.8 MB 75.9 MB
Events in quadrant A3,126,486596,954
Events in quadrant B3,949,857620,986
Events in quadrant C10,207,378375,562
Events in quadrant D9,641,486389,456

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134971
B0159471
C0345731
D0328267

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6087390.640710%
B60882303.777924%
C6088242139.766754%
D6087197632.462625%

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 7282 6088 13 13 0.18% 0.21%
B 7283 6089 121 121 1.66% 1.99%
C 7283 6089 2192 2192 30.10% 36.00%
D 7282 6088 1791 1791 24.59% 29.42%

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 14 337942 2111.16 635 618 159.8
A 0 30 46014 284.11 635 618 159.8
A 13 6 43555 268.72 635 618 159.8
B 10 128 401624 3018.62 628 606 132.8
B 1 255 354649 2665.02 628 606 132.8
B 10 254 305816 2297.43 628 606 132.8
C 15 248 7242946 49679.67 523 518 145.8
C 15 224 197869 1353.74 523 518 145.8
C 15 147 159585 1091.13 523 518 145.8
D 12 33 1751097 11165.78 541 516 156.8
D 6 42 1688594 10767.12 541 516 156.8
D 1 7 1166809 7439.0 541 516 156.8

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