ASTROSAT CZTI

Data Quality Report

Orbit 35734

Creation date: 2024-06-27T21:17:24.865235
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_029T06_9000005126_35734cztM0_level2.evt modeM0/AS1A09_029T06_9000005126_35734cztM0_level2_quad_clean.evt
Size (bytes)446,160,96088,597,440
Size425.5 MB 84.5 MB
Events in quadrant A3,728,829556,758
Events in quadrant B3,077,073590,685
Events in quadrant C3,235,188580,430
Events in quadrant D3,082,087555,015

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147803
B0129072
C0129992
D0128662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57224457.777001%
B5722811.415589%
C57221392.429221%
D5722350.611674%

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 7274 5723 373 373 5.13% 6.52%
B 7274 5723 53 53 0.73% 0.93%
C 7274 5723 114 114 1.57% 1.99%
D 7274 5723 36 36 0.49% 0.63%

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 15 169 1078199 8294.61 640 627 129.9
A 10 83 144460 1107.15 640 627 129.9
A 13 6 23950 179.53 640 627 129.9
B 5 172 369775 2892.44 655 637 127.6
B 5 255 76596 595.19 655 637 127.6
B 4 81 22597 172.07 655 637 127.6
C 0 10 444292 2969.09 638 641 149.4
C 15 214 240413 1604.65 638 641 149.4
C 0 207 43952 289.85 638 641 149.4
D 14 52 222846 1399.16 646 626 158.8
D 13 249 126594 793.13 646 626 158.8
D 8 195 32822 202.72 646 626 158.8

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