ASTROSAT CZTI

Data Quality Report

Orbit 40912

Creation date: 2024-06-27T22:22:06.708433
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/AS1A12_102T01_9000005576_40912cztM0_level2.fits modeM0/AS1A12_102T01_9000005576_40912cztM0_level2_quad_clean.evt
Size (bytes)38,695,6808,740,800
Size36.9 MB 8.3 MB
Events in quadrant A353,17358,041
Events in quadrant B354,02756,936
Events in quadrant C345,31855,112
Events in quadrant D337,83752,417

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013891
B013741
C013131
D013271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49551.010101%
B495357.070707%
C495326.464646%
D495255.050505%

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 495 495 2 2 0.40% 0.40%
B 495 495 27 27 5.45% 5.45%
C 495 495 26 26 5.25% 5.25%
D 495 495 17 17 3.43% 3.43%

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 10 83 121429 9036.34 55 54 13.4
A 12 189 6818 503.58 55 54 13.4
A 5 168 3845 282.24 55 54 13.4
B 5 32 113172 8731.07 55 53 13.0
B 0 190 12619 969.9 55 53 13.0
B 0 229 5710 436.63 55 53 13.0
C 0 10 87052 5845.52 56 56 14.9
C 15 214 25280 1694.87 56 56 14.9
C 14 254 13473 901.53 56 56 14.9
D 13 249 61732 3997.11 55 53 15.4
D 1 52 17597 1136.94 55 53 15.4
D 12 233 16033 1035.58 55 53 15.4

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