ASTROSAT CZTI

Data Quality Report

Orbit 45790

Creation date: 2024-06-27T23:16:11.871597
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_088T01_9000006126_45790cztM0_level2.fits modeM0/AS1T05_088T01_9000006126_45790cztM0_level2_quad_clean.evt
Size (bytes)1,417,685,760225,915,840
Size1.3 GB 215.5 MB
Events in quadrant A13,476,1751,568,508
Events in quadrant B10,112,3931,602,108
Events in quadrant C11,967,5431,365,453
Events in quadrant D15,793,4691,292,397

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0501363
B0398903
C0459623
D0570853

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146504483.058020%
B146505523.767918%
C14650208214.211604%
D14651165611.302983%

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 17240 14653 225 225 1.31% 1.54%
B 17240 14653 317 317 1.84% 2.16%
C 17240 14652 1838 1838 10.66% 12.54%
D 17241 14654 1285 1285 7.45% 8.77%

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 6191382 18363.69 1634 1598 337.1
A 9 191 659093 1950.64 1634 1598 337.1
A 13 248 187820 552.48 1634 1598 337.1
B 3 112 2493120 7781.51 1631 1580 320.2
B 0 189 223511 693.13 1631 1580 320.2
B 15 201 218252 676.7 1631 1580 320.2
C 12 2 5978481 17085.64 1496 1504 349.8
C 2 14 71927 201.31 1496 1504 349.8
C 12 250 43389 119.73 1496 1504 349.8
D 11 241 4705849 11998.49 1551 1503 392.1
D 12 2 2654626 6766.82 1551 1503 392.1
D 1 52 420288 1068.12 1551 1503 392.1

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