ASTROSAT CZTI

Data Quality Report

Orbit 49646

Creation date: 2024-12-04T13:12:13.325886
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/AS1T05_233T01_9000006438_49646cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49646cztM0_level2_quad_clean.evt
Size (bytes)1,275,759,36048,634,560
Size1.2 GB 46.4 MB
Events in quadrant A17,164,516223,925
Events in quadrant B6,138,001624,925
Events in quadrant C6,780,3332,471
Events in quadrant D16,620,928142,948

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0556430
B0229110
C0248880
D0539780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6718663898.809169%
B671995714.243191%
C67196719100.000000%
D6719668299.449323%

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 7507 6717 6533 6533 87.03% 97.26%
B 7509 6719 788 788 10.49% 11.73%
C 7508 6718 224 224 2.98% 3.33%
D 7508 6718 6381 6381 84.99% 94.98%

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 0 99 6063804 60934.71 279 267 99.5
A 10 83 4438661 44603.05 279 267 99.5
A 12 50 1314982 13212.05 279 267 99.5
B 5 173 1894370 13426.78 665 645 141.0
B 4 206 431518 3054.95 665 645 141.0
B 5 172 263840 1866.09 665 645 141.0
C 15 180 1830301 122036.72 21 20 15.0
C 15 219 1075709 71723.17 21 20 15.0
C 15 197 633120 42212.89 21 20 15.0
D 7 45 4025870 49317.47 197 185 81.6
D 15 40 3602998 44136.99 197 185 81.6
D 15 106 1847651 22632.76 197 185 81.6

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