ASTROSAT CZTI

Data Quality Report

Orbit 53065

Creation date: 2025-07-20T16:09:38.864298
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_011T07_9000006488_53065cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53065cztM0_level2_quad_clean.evt
Size (bytes)563,132,16093,490,560
Size537.0 MB 89.2 MB
Events in quadrant A5,080,727612,402
Events in quadrant B3,991,720659,591
Events in quadrant C6,723,225536,313
Events in quadrant D4,529,577555,489

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198362
B0167962
C0246942
D0182862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67024737.057595%
B67023665.461056%
C670298414.682184%
D67023485.192480%

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 7752 6703 324 324 4.18% 4.83%
B 7752 6703 198 198 2.55% 2.95%
C 7752 6702 805 805 10.38% 12.01%
D 7752 6703 241 241 3.11% 3.60%

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 9 191 1281634 7667.33 680 664 167.1
A 0 8 460013 2749.46 680 664 167.1
A 7 206 408046 2438.41 680 664 167.1
B 1 255 692015 4831.94 674 650 143.1
B 4 81 244080 1701.33 674 650 143.1
B 5 185 156214 1087.24 674 650 143.1
C 15 224 2617073 15206.34 623 616 172.1
C 1 241 692864 4023.21 623 616 172.1
C 7 80 236893 1373.2 623 616 172.1
D 12 17 895133 4769.65 655 625 187.5
D 3 12 118081 626.29 655 625 187.5
D 2 120 117577 623.61 655 625 187.5

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