ASTROSAT CZTI

Data Quality Report

Orbit 02956

Creation date: 2024-06-27T14:22:42.381713
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_02956cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02956cztM0_level2_common_clean.evt
Size (bytes)308,344,32051,321,600
Size294.1 MB 48.9 MB
Events in quadrant A2,019,979306,634
Events in quadrant B2,252,924304,818
Events in quadrant C2,071,062312,036
Events in quadrant D2,676,397304,235

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09791116
B010266107
C09773111
D011540114

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0221
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4655210.451128%
B4653731.568880%
C465170.150505%
D46521463.138435%

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 6782 4657 14 14 0.21% 0.30%
B 6781 4656 63 63 0.93% 1.35%
C 6777 4653 5 5 0.07% 0.11%
D 6779 4655 112 112 1.65% 2.41%

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 50 72827 748.31 470 459 96.7
A 14 249 61512 631.31 470 459 96.7
A 0 31 27829 283.01 470 459 96.7
B 2 249 233858 2515.08 480 469 92.8
B 6 36 36329 386.44 480 469 92.8
B 6 203 32559 345.81 480 469 92.8
C 1 192 94271 837.24 470 471 112.0
C 6 80 61010 540.36 470 471 112.0
C 0 219 22469 196.35 470 471 112.0
D 12 1 244046 2246.83 453 443 108.4
D 2 136 185616 1707.91 453 443 108.4
D 15 35 122410 1124.94 453 443 108.4

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
Veto Counter