ASTROSAT CZTI

Data Quality Report

Orbit 43551

Creation date: 2024-06-27T22:53:05.417599
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/AS1A05_174T01_9000005880_43551cztM0_level2.fits modeM0/AS1A05_174T01_9000005880_43551cztM0_level2_quad_clean.evt
Size (bytes)1,267,787,52080,850,240
Size1.2 GB 77.1 MB
Events in quadrant A7,692,306767,256
Events in quadrant B4,059,974808,203
Events in quadrant C17,581,671289,694
Events in quadrant D17,031,49666,952

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281480
B0171650
C0572290
D0555333

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73126378.711707%
B73121051.435996%
C7312626385.653720%
D73117311100.000000%

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 7312 7312 207 207 2.83% 2.83%
B 7312 7312 56 56 0.77% 0.77%
C 7312 7312 5970 5970 81.65% 81.65%
D 7310 7310 6749 6749 92.33% 92.33%

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 0 228 2891703 17386.43 800 786 166.3
A 10 83 625878 3759.4 800 786 166.3
A 10 99 517719 3108.92 800 786 166.3
B 3 42 309962 1928.56 817 792 160.3
B 3 25 152019 943.33 817 792 160.3
B 0 230 143767 891.86 817 792 160.3
C 15 174 5102574 68066.39 314 316 75.0
C 15 142 4851503 64716.99 314 316 75.0
C 15 126 3482876 46458.9 314 316 75.0
D 4 216 11745560 285098.16 98 91 41.2
D 4 212 1452050 35243.45 98 91 41.2
D 8 48 747845 18150.26 98 91 41.2

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