ASTROSAT CZTI

Data Quality Report

Orbit 40434

Creation date: 2024-06-27T22:16:04.353404
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_40434cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40434cztM0_level2_quad_clean.evt
Size (bytes)293,713,92085,049,280
Size280.1 MB 81.1 MB
Events in quadrant A2,703,598582,838
Events in quadrant B2,378,235593,421
Events in quadrant C2,368,224566,864
Events in quadrant D3,032,248481,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111933
B0103962
C0101542
D0125572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4995160.320320%
B4995210.420420%
C499570.140140%
D49954889.769770%

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 6968 4996 9 9 0.13% 0.18%
B 6968 4996 12 12 0.17% 0.24%
C 6968 4996 2 2 0.03% 0.04%
D 6968 4996 148 148 2.12% 2.96%

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 466170 4147.67 548 537 112.3
A 2 79 112688 999.0 548 537 112.3
A 3 137 5958 48.29 548 537 112.3
B 4 170 124852 1183.83 545 529 105.0
B 3 112 77380 731.79 545 529 105.0
B 0 245 20733 192.39 545 529 105.0
C 15 214 219109 1727.87 540 545 126.5
C 14 254 24696 190.93 540 545 126.5
C 0 10 11987 90.46 540 545 126.5
D 12 227 674491 5389.36 509 496 125.1
D 2 250 126917 1010.88 509 496 125.1
D 12 191 123959 987.23 509 496 125.1

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