ASTROSAT CZTI

Data Quality Report

Orbit 37836

Creation date: 2024-06-27T21:45:05.688690
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/AS1C07_001T12_9000005352_37836cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37836cztM0_level2_quad_clean.evt
Size (bytes)485,553,60090,855,360
Size463.1 MB 86.6 MB
Events in quadrant A2,800,741634,775
Events in quadrant B2,947,076638,581
Events in quadrant C2,822,346622,663
Events in quadrant D5,766,219475,093

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116333
B0122362
C0117362
D0209002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5421140.258255%
B54211041.918465%
C5421400.737871%
D5421128323.667220%

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 7155 5422 7 7 0.10% 0.13%
B 7155 5422 89 89 1.24% 1.64%
C 7155 5422 39 39 0.55% 0.72%
D 7155 5422 1052 1052 14.70% 19.40%

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 348246 2832.18 615 603 122.7
A 9 143 34555 276.6 615 603 122.7
A 12 189 25418 202.16 615 603 122.7
B 5 172 338695 2938.25 604 589 115.1
B 0 229 96868 836.7 604 589 115.1
B 0 213 77347 667.05 604 589 115.1
C 15 214 246033 1796.74 588 591 136.6
C 0 10 184408 1345.62 588 591 136.6
C 1 23 82271 597.93 588 591 136.6
D 13 249 2103902 17749.16 485 471 118.5
D 12 227 645628 5443.96 485 471 118.5
D 1 52 326372 2750.02 485 471 118.5

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