ASTROSAT CZTI

Data Quality Report

Orbit 52541

Creation date: 2025-06-15T08:09:20.291002
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_52541cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52541cztM0_level2_quad_clean.evt
Size (bytes)780,681,60087,140,160
Size744.5 MB 83.1 MB
Events in quadrant A3,359,585646,408
Events in quadrant B6,195,200638,523
Events in quadrant C8,279,914467,559
Events in quadrant D10,546,526419,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150222
B0229992
C0292902
D0360272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6685881.316380%
B668574211.099476%
C6685181527.150337%
D6685218432.670157%

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 7845 6686 53 53 0.68% 0.79%
B 7845 6686 519 519 6.62% 7.76%
C 7845 6686 1574 1574 20.06% 23.54%
D 7845 6686 2042 2042 26.03% 30.54%

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 46 158248 892.85 694 678 176.5
A 6 233 124731 702.93 694 678 176.5
A 15 174 69161 388.05 694 678 176.5
B 10 44 1564795 11185.61 664 642 139.8
B 10 254 891231 6368.8 664 642 139.8
B 4 81 270618 1930.66 664 642 139.8
C 15 248 4549434 28315.91 575 567 160.6
C 13 3 579686 3604.92 575 567 160.6
C 12 254 424894 2641.36 575 567 160.6
D 8 176 2813793 16787.0 582 555 167.6
D 6 42 1789204 10673.13 582 555 167.6
D 12 17 1435205 8560.77 582 555 167.6

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