ASTROSAT CZTI

Data Quality Report

Orbit 38423

Creation date: 2024-06-27T21:52:34.245877
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_018T01_9000005386_38423cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38423cztM0_level2_quad_clean.evt
Size (bytes)382,268,16098,377,920
Size364.6 MB 93.8 MB
Events in quadrant A3,178,948661,220
Events in quadrant B3,316,369665,285
Events in quadrant C2,837,805649,998
Events in quadrant D4,353,508585,641

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132373
B0139992
C0121952
D0171662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5961530.889113%
B59611061.778225%
C5961100.167757%
D59612674.479114%

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 7334 5962 27 27 0.37% 0.45%
B 7334 5962 60 60 0.82% 1.01%
C 7334 5962 3 3 0.04% 0.05%
D 7334 5962 219 219 2.99% 3.67%

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 425671 3214.51 652 638 132.2
A 9 143 129191 972.24 652 638 132.2
A 12 189 43898 327.17 652 638 132.2
B 0 183 247956 2000.65 650 634 123.6
B 8 3 127619 1027.21 650 634 123.6
B 0 229 119566 962.07 650 634 123.6
C 15 214 252069 1654.05 644 646 152.0
C 0 10 31903 205.63 644 646 152.0
C 15 208 30601 197.07 644 646 152.0
D 12 227 739262 4758.91 635 618 155.2
D 12 235 477110 3069.92 635 618 155.2
D 2 153 197991 1271.63 635 618 155.2

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