ASTROSAT CZTI

Data Quality Report

Orbit 37883

Creation date: 2024-06-27T21:45:40.535022
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_37883cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37883cztM0_level2_quad_clean.evt
Size (bytes)383,978,88092,093,760
Size366.2 MB 87.8 MB
Events in quadrant A2,711,942637,401
Events in quadrant B2,734,710635,545
Events in quadrant C2,635,005595,285
Events in quadrant D3,214,776577,991

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109033
B0110592
C0106302
D0126792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4886150.307000%
B4886871.780598%
C4886651.330332%
D48861793.663528%

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 7009 4887 7 7 0.10% 0.14%
B 7009 4887 59 59 0.84% 1.21%
C 7009 4887 56 56 0.80% 1.15%
D 7009 4887 169 169 2.41% 3.46%

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 340442 2888.36 595 586 117.7
A 12 227 26044 216.36 595 586 117.7
A 13 248 25782 214.13 595 586 117.7
B 5 172 397305 3675.43 578 568 107.9
B 0 229 18979 170.56 578 568 107.9
B 0 230 18892 169.76 578 568 107.9
C 15 214 208690 1633.76 555 559 127.4
C 0 10 158172 1237.21 555 559 127.4
C 14 254 87680 683.87 555 559 127.4
D 12 227 534959 3911.53 565 550 136.6
D 2 249 117893 858.88 565 550 136.6
D 1 52 99164 721.79 565 550 136.6

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