ASTROSAT CZTI

Data Quality Report

Orbit 26053

Creation date: 2024-06-27T19:24:18.281378
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/AS1A09_085T03_9000003764_26053cztM0_level2.evt modeM0/AS1A09_085T03_9000003764_26053cztM0_level2_quad_clean.evt
Size (bytes)691,320,96096,721,920
Size659.3 MB 92.2 MB
Events in quadrant A3,026,913725,599
Events in quadrant B3,007,282732,693
Events in quadrant C2,982,903693,356
Events in quadrant D11,524,081368,035

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125430
B0124590
C0124480
D0379230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5925190.320675%
B5907280.474014%
C5927490.826725%
D5517363865.941635%

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 7435 6097 3 3 0.04% 0.05%
B 7436 6088 0 0 0.00% 0.00%
C 7436 6101 0 0 0.00% 0.00%
D 7436 5641 3597 3597 48.37% 63.77%

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 13 29213 185.7 775 763 153.2
A 13 254 8628 51.34 775 763 153.2
A 8 255 8328 49.38 775 763 153.2
B 0 190 33211 231.68 759 744 140.1
B 12 111 16378 111.56 759 744 140.1
B 11 111 14479 98.01 759 744 140.1
C 14 238 119840 720.7 727 731 165.3
C 3 233 24317 142.71 727 731 165.3
C 13 250 5378 28.12 727 731 165.3
D 1 52 8286487 75817.37 436 424 109.3
D 12 2 848753 7762.2 436 424 109.3
D 1 3 679686 6215.24 436 424 109.3

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