ASTROSAT CZTI

Data Quality Report

Orbit 41883

Creation date: 2024-06-27T22:34:00.249876
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/AS1T05_124T01_9000005712_41883cztM0_level2.fits modeM0/AS1T05_124T01_9000005712_41883cztM0_level2_quad_clean.evt
Size (bytes)400,161,60084,340,800
Size381.6 MB 80.4 MB
Events in quadrant A3,124,170580,044
Events in quadrant B2,415,452598,922
Events in quadrant C3,199,603527,765
Events in quadrant D5,665,463480,346

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124942
B0106862
C0126942
D0204312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5246971.849028%
B524630.057186%
C52462935.585208%
D524662511.913839%

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 7159 5247 21 21 0.29% 0.40%
B 7159 5247 0 0 0.00% 0.00%
C 7159 5247 290 290 4.05% 5.53%
D 7159 5247 627 627 8.76% 11.95%

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 10 83 535291 4442.33 582 570 120.4
A 14 24 319684 2651.12 582 570 120.4
A 13 254 7016 53.55 582 570 120.4
B 0 156 81927 720.1 579 563 113.0
B 0 245 37293 325.07 579 563 113.0
B 12 111 14542 123.72 579 563 113.0
C 0 10 855870 6707.77 541 543 127.5
C 15 214 203897 1594.77 541 543 127.5
C 0 15 28638 220.33 541 543 127.5
D 12 79 2829428 20966.03 546 531 134.9
D 13 249 352022 2605.03 546 531 134.9
D 12 6 142950 1055.52 546 531 134.9

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