ASTROSAT CZTI

Data Quality Report

Orbit 50903

Creation date: 2025-02-25T08:31:49.127164
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/AS1C07_001T01_9000006450_50903cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50903cztM0_level2_quad_clean.evt
Size (bytes)612,838,080104,621,760
Size584.4 MB 99.8 MB
Events in quadrant A5,784,252678,096
Events in quadrant B3,916,988768,184
Events in quadrant C5,113,553672,720
Events in quadrant D7,285,088523,499

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224374
B0171294
C0203554
D0269554

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75435757.622962%
B75432132.823810%
C75432042.704494%
D7543152020.151134%

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 7793 7547 383 383 4.91% 5.07%
B 7793 7547 47 47 0.60% 0.62%
C 7793 7547 70 70 0.90% 0.93%
D 7792 7546 949 949 12.18% 12.58%

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 7 206 929457 4759.65 788 770 195.1
A 4 4 703678 3602.5 788 770 195.1
A 4 3 175442 895.22 788 770 195.1
B 4 81 179651 1044.53 806 775 171.2
B 8 234 131400 762.77 806 775 171.2
B 8 128 124345 721.58 806 775 171.2
C 12 247 774825 3581.43 790 783 216.1
C 3 233 208821 962.57 790 783 216.1
C 5 10 187743 865.05 790 783 216.1
D 7 45 2160155 10845.76 711 685 199.1
D 15 184 433964 2176.11 711 685 199.1
D 2 249 416231 2087.04 711 685 199.1

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