ASTROSAT CZTI

Data Quality Report

Orbit 26373

Creation date: 2024-06-27T19:28:17.044371
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_088T01_9000003812_26373cztM0_level2.evt modeM0/AS1A09_088T01_9000003812_26373cztM0_level2_quad_clean.evt
Size (bytes)638,038,080123,577,920
Size608.5 MB 117.9 MB
Events in quadrant A3,524,652858,818
Events in quadrant B3,292,358890,552
Events in quadrant C5,762,295804,371
Events in quadrant D6,329,927761,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142610
B0135970
C0214460
D0230200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6115941.537204%
B6116540.882930%
C611676012.426422%
D611691514.960759%

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 7475 6116 42 42 0.56% 0.69%
B 7476 6117 1 1 0.01% 0.02%
C 7476 6116 355 355 4.75% 5.80%
D 7476 6117 690 690 9.23% 11.28%

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 353376 2182.35 821 807 161.6
A 13 254 9956 56.63 821 807 161.6
A 0 226 7110 39.01 821 807 161.6
B 0 230 38473 248.21 829 811 151.7
B 12 111 17507 110.03 829 811 151.7
B 11 111 15648 97.78 829 811 151.7
C 3 233 2646322 15151.5 761 768 174.6
C 14 238 123837 704.84 761 768 174.6
C 2 16 26440 147.03 761 768 174.6
D 7 80 3129481 17705.46 752 737 176.7
D 1 52 241917 1364.83 752 737 176.7
D 11 176 86693 486.42 752 737 176.7

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter