ASTROSAT CZTI

Data Quality Report

Orbit 30927

Creation date: 2024-06-27T20:21:15.768291
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/AS1C06_007T01_9000004470_30927cztM0_level2.evt modeM0/AS1C06_007T01_9000004470_30927cztM0_level2_quad_clean.evt
Size (bytes)1,734,491,520239,561,280
Size1.6 GB 228.5 MB
Events in quadrant A9,614,2701,565,955
Events in quadrant B15,726,5241,549,150
Events in quadrant C10,555,3451,441,897
Events in quadrant D15,378,7911,414,187

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409524
B0598754
C0429604
D0578924

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186274612.474902%
B186276823.661352%
C1862618069.696124%
D1862716498.852741%

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 20452 18629 188 188 0.92% 1.01%
B 20452 18627 197 197 0.96% 1.06%
C 20451 18627 30 30 0.15% 0.16%
D 20452 18628 1331 1331 6.51% 7.15%

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 13 922346 2029.4 2242 2193 453.4
A 13 254 38736 80.59 2242 2193 453.4
A 11 47 37084 76.95 2242 2193 453.4
B 6 159 5530968 13140.78 2212 2155 420.7
B 5 255 621101 1471.1 2212 2155 420.7
B 0 183 261040 615.31 2212 2155 420.7
C 14 238 786064 1604.19 2079 2090 488.7
C 3 233 746795 1523.84 2079 2090 488.7
C 14 254 651957 1329.78 2079 2090 488.7
D 12 233 1759028 3450.36 2114 2056 509.2
D 8 195 1202083 2356.63 2114 2056 509.2
D 13 249 971474 1903.75 2114 2056 509.2

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