ASTROSAT CZTI

Data Quality Report

Orbit 00566

Creation date: 2024-06-27T14:00:01.749905
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/AS1P01_014T06_9000000078_00566cztM0_level2.evt modeM0/AS1P01_014T06_9000000078_00566cztM0_level2_quad_clean.evt
Size (bytes)785,851,20059,195,520
Size749.4 MB 56.5 MB
Events in quadrant A6,259,181362,796
Events in quadrant B6,037,919371,034
Events in quadrant C5,387,376363,702
Events in quadrant D5,785,984347,578

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221103
B0214682
C0194972
D0206832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4951180.363563%
B495140.080792%
C495130.060594%
D4951190.383761%

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 7106 4952 161 161 2.27% 3.25%
B 7106 4952 82 82 1.15% 1.66%
C 7106 4952 32 32 0.45% 0.65%
D 7106 4952 93 93 1.31% 1.88%

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 14 79 123929 362.33 1534 1521 337.8
A 15 143 83916 243.89 1534 1521 337.8
A 0 238 78859 228.92 1534 1521 337.8
B 4 250 211055 591.43 1504 1517 354.3
B 4 235 15407 39.2 1504 1517 354.3
B 5 46 11106 27.07 1504 1517 354.3
C 5 249 49419 127.18 1352 1398 377.6
C 15 241 17310 42.14 1352 1398 377.6
C 14 239 13066 30.9 1352 1398 377.6
D 13 221 207022 495.65 1333 1388 414.9
D 1 4 144320 344.51 1333 1388 414.9
D 12 237 101289 240.79 1333 1388 414.9

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