ASTROSAT CZTI

Data Quality Report

Orbit 39423

Creation date: 2024-06-27T22:04:24.210907
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_077T06_9000005474_39423cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39423cztM0_level2_quad_clean.evt
Size (bytes)776,335,68079,418,880
Size740.4 MB 75.7 MB
Events in quadrant A5,224,916645,198
Events in quadrant B3,197,541673,375
Events in quadrant C5,809,414582,391
Events in quadrant D14,044,85887,844

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198113
B0135732
C0212312
D0459079

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59822333.895018%
B5982851.420929%
C598269111.551321%
D5836513888.039753%

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 7264 5983 169 169 2.33% 2.82%
B 7264 5983 46 46 0.63% 0.77%
C 7264 5983 579 579 7.97% 9.68%
D 7117 5835 4394 4394 61.74% 75.30%

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 15 222 2136237 15789.88 659 645 135.3
A 10 83 484385 3576.62 659 645 135.3
A 2 79 34171 247.88 659 645 135.3
B 6 203 273853 2101.96 663 647 130.0
B 5 255 225146 1727.23 663 647 130.0
B 5 172 70734 539.23 663 647 130.0
C 15 208 2913975 19925.43 622 625 146.2
C 15 214 243656 1662.18 622 625 146.2
C 14 254 84243 571.89 622 625 146.2
D 12 235 10577317 146137.0 288 279 72.4
D 12 0 1666206 23017.18 288 279 72.4
D 2 249 355985 4914.59 288 279 72.4

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