ASTROSAT CZTI

Data Quality Report

Orbit 40228

Creation date: 2024-06-27T22:13:51.512644
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_001T01_9000005532_40228cztM0_level2.fits modeM0/AS1C07_001T01_9000005532_40228cztM0_level2_quad_clean.evt
Size (bytes)329,117,76091,293,120
Size313.9 MB 87.1 MB
Events in quadrant A2,740,271611,505
Events in quadrant B3,410,364633,069
Events in quadrant C2,605,743618,840
Events in quadrant D3,040,077553,128

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113453
B0135182
C0107482
D0125522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4962230.463523%
B4962861.733172%
C4962170.342604%
D49621733.486497%

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 7024 4963 10 10 0.14% 0.20%
B 7024 4963 33 33 0.47% 0.66%
C 7024 4963 8 8 0.11% 0.16%
D 7024 4963 132 132 1.88% 2.66%

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 451180 3909.36 566 556 115.3
A 13 248 78627 677.3 566 556 115.3
A 12 189 14261 118.9 566 556 115.3
B 7 202 830535 7611.1 570 555 109.0
B 0 229 158576 1449.09 570 555 109.0
B 5 255 74960 682.31 570 555 109.0
C 15 214 215058 1644.46 570 574 130.4
C 9 187 79693 606.61 570 574 130.4
C 0 10 49572 375.67 570 574 130.4
D 12 227 277156 2070.42 556 542 133.6
D 9 19 136479 1017.47 556 542 133.6
D 2 249 123260 918.53 556 542 133.6

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