ASTROSAT CZTI

Data Quality Report

Orbit 22857

Creation date: 2024-06-27T18:46:40.013921
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/AS1A07_054T01_9000003378_22857cztM0_level2.evt modeM0/AS1A07_054T01_9000003378_22857cztM0_level2_quad_clean.evt
Size (bytes)1,182,936,960323,737,920
Size1.1 GB 308.7 MB
Events in quadrant A7,822,4772,275,746
Events in quadrant B7,726,0332,280,143
Events in quadrant C7,648,3812,117,315
Events in quadrant D11,573,2282,055,710

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325193
B0323423
C0322773
D0444133

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156171761.126977%
B156182271.453451%
C156182511.607120%
D156189666.185171%

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 19377 15620 0 0 0.00% 0.00%
B 19378 15621 3 3 0.02% 0.02%
C 19378 15621 0 0 0.00% 0.00%
D 19378 15621 717 717 3.70% 4.59%

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 13 252 112961 286.62 1978 1943 387.3
A 11 47 50624 125.68 1978 1943 387.3
A 4 2 43569 107.47 1978 1943 387.3
B 0 190 48405 128.88 1948 1904 360.8
B 12 111 41612 110.05 1948 1904 360.8
B 11 111 36560 96.05 1948 1904 360.8
C 14 238 302576 716.07 1844 1852 420.0
C 10 22 64391 148.92 1844 1852 420.0
C 0 239 51578 118.41 1844 1852 420.0
D 7 238 2963607 6662.87 1866 1814 444.5
D 1 52 809337 1816.61 1866 1814 444.5
D 13 153 311775 697.29 1866 1814 444.5

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