ASTROSAT CZTI

Data Quality Report

Orbit 40460

Creation date: 2024-06-27T22:16:22.721599
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_022T01_9000005540_40460cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40460cztM0_level2_quad_clean.evt
Size (bytes)343,192,32094,939,200
Size327.3 MB 90.5 MB
Events in quadrant A2,909,967671,904
Events in quadrant B2,662,061685,085
Events in quadrant C2,698,524635,241
Events in quadrant D4,028,188518,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116593
B0111092
C0109802
D0153682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5197110.211661%
B5197190.365596%
C5197200.384837%
D519773414.123533%

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 7259 5198 2 2 0.03% 0.04%
B 7259 5198 4 4 0.06% 0.08%
C 7259 5198 8 8 0.11% 0.15%
D 7259 5198 326 326 4.49% 6.27%

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 471305 3709.38 624 614 126.9
A 12 189 17333 131.76 624 614 126.9
A 3 1 8762 64.21 624 614 126.9
B 4 170 186709 1605.16 613 597 115.9
B 0 230 42351 360.12 613 597 115.9
B 3 112 14660 121.29 613 597 115.9
C 15 214 226025 1650.09 595 598 136.6
C 14 254 141559 1031.81 595 598 136.6
C 0 10 7096 47.56 595 598 136.6
D 2 250 1103150 8057.64 560 547 136.8
D 12 227 424642 3099.22 560 547 136.8
D 12 191 130023 946.19 560 547 136.8

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