ASTROSAT CZTI

Data Quality Report

Orbit 02952

Creation date: 2024-06-27T14:22:38.519948
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/AS1G05_238T04_9000000416_02952cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02952cztM0_level2_common_clean.evt
Size (bytes)472,533,12073,728,000
Size450.6 MB 70.3 MB
Events in quadrant A2,654,915475,149
Events in quadrant B2,924,171476,529
Events in quadrant C2,885,407466,345
Events in quadrant D5,487,263444,948

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113373
B0119292
C0120062
D0198262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5290230.434783%
B5290691.304348%
C5290420.793951%
D529084215.916824%

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 7415 5291 14 14 0.19% 0.26%
B 7415 5291 48 48 0.65% 0.91%
C 7415 5291 29 29 0.39% 0.55%
D 7415 5291 665 665 8.97% 12.57%

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 0 31 88639 725.77 607 595 121.3
A 14 238 82172 672.46 607 595 121.3
A 0 50 72479 592.56 607 595 121.3
B 2 249 270208 2314.01 610 598 116.5
B 6 203 66470 565.37 610 598 116.5
B 0 205 48277 409.22 610 598 116.5
C 1 192 213084 1564.09 588 591 135.9
C 6 80 113101 828.15 588 591 135.9
C 8 161 95015 695.03 588 591 135.9
D 7 80 2702251 20513.38 553 540 131.7
D 14 81 149402 1130.27 553 540 131.7
D 14 113 108620 820.62 553 540 131.7

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
Veto Counter