ASTROSAT CZTI

Data Quality Report

Orbit 26050

Creation date: 2024-06-27T19:24:16.974217
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_26050cztM0_level2.evt modeM0/AS1A09_085T03_9000003764_26050cztM0_level2_quad_clean.evt
Size (bytes)545,898,24093,038,400
Size520.6 MB 88.7 MB
Events in quadrant A2,948,089624,569
Events in quadrant B2,849,294638,710
Events in quadrant C2,805,371619,181
Events in quadrant D7,521,318513,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126770
B0124470
C0123540
D0264940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6019230.382123%
B6020320.531561%
C6020621.029900%
D6020130521.677741%

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 7104 6019 4 4 0.06% 0.07%
B 7105 6020 2 2 0.03% 0.03%
C 7105 6021 0 0 0.00% 0.00%
D 7105 6021 1313 1313 18.48% 21.81%

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 4 2 159807 1110.91 715 701 143.2
A 0 13 30180 205.83 715 701 143.2
A 13 254 9224 59.51 715 701 143.2
B 0 229 30399 221.08 713 696 134.4
B 0 190 18168 130.05 713 696 134.4
B 12 111 16336 116.41 713 696 134.4
C 14 238 111716 699.65 685 686 158.7
C 3 233 17139 103.68 685 686 158.7
C 13 61 4923 26.7 685 686 158.7
D 1 52 3197486 20083.96 607 594 159.2
D 1 3 1522731 9562.58 607 594 159.2
D 13 168 363999 2283.03 607 594 159.2

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