ASTROSAT CZTI

Data Quality Report

Orbit 52307

Creation date: 2025-07-22T15:45:42.499655
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/AS1C09_011T05_9000006474_52307cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52307cztM0_level2_quad_clean.evt
Size (bytes)824,391,36074,957,760
Size786.2 MB 71.5 MB
Events in quadrant A3,204,561605,501
Events in quadrant B4,516,639636,536
Events in quadrant C10,690,413337,392
Events in quadrant D11,618,532251,352

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138891
B0177971
C0360711
D0388561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6280751.194268%
B62802293.646497%
C6281292946.632702%
D6281362357.681898%

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 7390 6281 28 28 0.38% 0.45%
B 7390 6281 155 155 2.10% 2.47%
C 7391 6281 2759 2759 37.33% 43.93%
D 7391 6281 3441 3441 46.56% 54.78%

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 12 3 200009 1211.48 658 643 164.6
A 3 14 97660 589.54 658 643 164.6
A 15 250 45709 273.85 658 643 164.6
B 7 0 844305 6194.4 641 619 136.2
B 4 171 379202 2779.58 641 619 136.2
B 0 216 233726 1711.49 641 619 136.2
C 9 38 3037081 22704.33 478 474 133.7
C 15 224 2636693 19710.68 478 474 133.7
C 0 161 1809449 13525.48 478 474 133.7
D 12 2 4483199 35259.59 436 415 127.1
D 15 93 3060630 24070.3 436 415 127.1
D 8 176 802914 6312.1 436 415 127.1

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