ASTROSAT CZTI

Data Quality Report

Orbit 20230212_A12_037T07_9000005504_level2

Creation date: 2023-02-15T23:15:26.360949
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/AS1A12_037T07_9000005504cztM0_level2.fits modeM0/AS1A12_037T07_9000005504cztM0_level2_quad_clean.evt
Size (bytes)266,950,080196,444,800
Size254.6 MB 187.3 MB
Events in quadrant A1,623,3321,026,495
Events in quadrant B1,536,9701,041,855
Events in quadrant C1,586,6141,001,225
Events in quadrant D1,372,250912,774

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05860
B05860
C05860
D05860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0654540
B0623400
C0592520
D0712320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01330
C01330
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A285892430.849977%
B285873821.336272%
C28594920.321746%
D285887512.626976%

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 47479 28594 0 0 0.00% 0.00%
B 47479 28573 0 0 0.00% 0.00%
C 47479 28599 0 0 0.00% 0.00%
D 47479 28589 0 0 0.00% 0.00%

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 7 110 1327 8.78 423 397 105.9
A 0 29 1320 8.71 423 397 105.9
A 9 19 1238 7.94 423 397 105.9
B 2 9 1333 11.77 407 389 80.2
B 3 80 1202 10.14 407 389 80.2
B 2 8 1119 9.1 407 389 80.2
C 1 81 1269 8.12 419 393 107.9
C 3 203 1268 8.11 419 393 107.9
C 1 80 1267 8.1 419 393 107.9
D 4 160 1017 6.28 393 358 105.0
D 7 3 1012 6.23 393 358 105.0
D 10 189 992 6.04 393 358 105.0

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