ASTROSAT CZTI

Data Quality Report

Orbit 35133

Creation date: 2022-03-29T00:02:16.281249
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/AS1A11_047T09_9000005028_35133cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35133cztM0_level2_quad_clean.evt
Size (bytes)772,064,64071,671,680
Size736.3 MB 68.4 MB
Events in quadrant A10,409,472279,448
Events in quadrant B3,142,479543,872
Events in quadrant C2,950,762529,084
Events in quadrant D6,540,321463,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343032
B0125331
C0116761
D0230031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5031371473.822302%
B5031941.868416%
C5031811.610018%
D503171514.211886%

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 7154 5032 3169 3169 44.30% 62.98%
B 7154 5032 58 58 0.81% 1.15%
C 7154 5032 49 49 0.68% 0.97%
D 7153 5031 781 781 10.92% 15.52%

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 15 169 8865696 115761.05 380 374 76.6
A 10 83 52449 679.98 380 374 76.6
A 9 254 10343 130.17 380 374 76.6
B 5 172 472317 4033.52 615 600 116.9
B 0 190 190628 1624.88 615 600 116.9
B 15 85 25335 211.5 615 600 116.9
C 0 10 259265 1868.66 600 608 138.4
C 15 214 210837 1518.79 600 608 138.4
C 14 67 81366 583.43 600 608 138.4
D 8 195 2747571 19229.81 583 569 142.9
D 10 118 555572 3885.18 583 569 142.9
D 14 52 302355 2112.59 583 569 142.9

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